Pradeep J. Nathan

Acute high-dose glycine attenuates mismatch negativity (MMN) in healthy human controls (2008)

Leung, Sumie, Croft, Rodney J., O'Neill, Barry V., Nathan, Pradeep J.

Schizophrenia is commonly associated with impairments in pre-attentive change detection as represented by reduced mismatch negativity (MMN). The neurochemical basis of MMN has been linked to...

The cognitive effects of modulating the glycine site of the NMDA receptor with high-dose glycine in healthy controls (2008)

Palmer, Colin, Ellis, Kathryn A., O'Neill, Barry V., Croft, Rodney J., Leung, Sumie, Oliver, Chris, ...

N-methyl-D-aspartate (NMDA) receptors play an important role in learning and memory. Targeting the glycine modulatory site of the NMDA receptor has been suggested as a therapeutic strategy to improve...

Pre- and post-synaptic dopamine imaging and its relation with frontostriatal cognitive function in Parkinson disease: PET studies with [11C]NNC 112 and [18F]FDOPA (2008)

Cropley, Vanessa L., Fujita, Masahiro, Bara-Jimenez, William, Brown, Amira K., Zhang, Xiang-Yiang, Sangare, Janet, ...

Frontostriatal cognitive dysfunction is common in Parkinson disease (PD), but the explanation for its heterogeneous expressions remains unclear. This study examined the dopamine system within the...

Small effect of dopamine release and no effect of dopamine depletion on [18F]fallypride binding in healthy humans (2008)

Cropley, Vanessa L., Innis, Robert B., Nathan, Pradeep J., Brown, Amira K., Sangare, Janet, Lerner, Alicja Lerner, ...

Molecular imaging has been used to estimate both drug-induced and tonic dopamine release in the striatum and most recently extrastriatal areas of healthy humans. However, to date, studies of...

An examination of acute changes in serotonergic neurotransmission using the loudness dependence measure of auditory cortex evoked activity: effects of citalopram, escitalopram and sertraline (2008)

Guille, Valerie, Croft, Rodney J., O'Neill, Barry V., Illic, Susan, Phan, K. Luan, Nathan, Pradeep J.

The underlying effect of serotonergic neurotransmission has been implicated in several psychiatric disorders. The inability to routinely and non-invasively determine the integrity of the serotonergic...

Differential effects of acute serotonin and dopamine depletion on prepulse inhibition and P50 suppression measures of sensorimotor and sensory gating in humans (2008)

Mann, Collette, Croft, Rodney J., Scholes, Kirsty E., Dunne, Alan, O'Neill, Barry V., Leung, Sumie, ...

Schizophrenia is associated with impairments of sensorimotor and sensory gating as measured by prepulse inhibition (PPI) of the acoustic startle response and P50 suppression of the auditory...

Acute high-dose glycine attenuates mismatch negativity (MMN) in healthy human controls (2008)

Leung, Sumie, Croft, Rodney J., O'Neill, Barry V., Nathan, Pradeep J.

Schizophrenia is commonly associated with impairments in pre-attentive change detection as represented by reduced mismatch negativity (MMN). The neurochemical basis of MMN has been linked to...

The cognitive effects of modulating the glycine site of the NMDA receptor with high-dose glycine in healthy controls (2008)

Palmer, Colin, Ellis, Kathryn A., O'Neill, Barry V., Croft, Rodney J., Leung, Sumie, Oliver, Chris, ...

N-methyl-D-aspartate (NMDA) receptors play an important role in learning and memory. Targeting the glycine modulatory site of the NMDA receptor has been suggested as a therapeutic strategy to improve...

Pre- and post-synaptic dopamine imaging and its relation with frontostriatal cognitive function in Parkinson disease: PET studies with [11C]NNC 112 and [18F]FDOPA (2008)

Cropley, Vanessa L., Fujita, Masahiro, Bara-Jimenez, William, Brown, Amira K., Zhang, Xiang-Yiang, Sangare, Janet, ...

Frontostriatal cognitive dysfunction is common in Parkinson disease (PD), but the explanation for its heterogeneous expressions remains unclear. This study examined the dopamine system within the...

Small effect of dopamine release and no effect of dopamine depletion on [18F]fallypride binding in healthy humans (2008)

Cropley, Vanessa L., Innis, Robert B., Nathan, Pradeep J., Brown, Amira K., Sangare, Janet, Lerner, Alicja Lerner, ...

Molecular imaging has been used to estimate both drug-induced and tonic dopamine release in the striatum and most recently extrastriatal areas of healthy humans. However, to date, studies of...

An examination of acute changes in serotonergic neurotransmission using the loudness dependence measure of auditory cortex evoked activity: effects of citalopram, escitalopram and sertraline (2008)

Guille, Valerie, Croft, Rodney J., O'Neill, Barry V., Illic, Susan, Phan, K. Luan, Nathan, Pradeep J.

The underlying effect of serotonergic neurotransmission has been implicated in several psychiatric disorders. The inability to routinely and non-invasively determine the integrity of the serotonergic...

Differential effects of acute serotonin and dopamine depletion on prepulse inhibition and P50 suppression measures of sensorimotor and sensory gating in humans (2008)

Mann, Collette, Croft, Rodney J., Scholes, Kirsty E., Dunne, Alan, O'Neill, Barry V., Leung, Sumie, ...

Schizophrenia is associated with impairments of sensorimotor and sensory gating as measured by prepulse inhibition (PPI) of the acoustic startle response and P50 suppression of the auditory...

The loudness dependence of the auditory evoked potential (LDAEP) as an in iivo biomarker of central serotonergic function in humans: rationale, evaluation and review of findings (2008)

O'Neill, Barry V., Croft, Rodney J., Nathan, Pradeep J.

The loudness dependence of the auditory evoked potential (LDAEP) has been proposed as a valid means of non-invasively assessing in vivo central serotonin (5-hydroxytryptamine, 5-HT) function in...

Effects of selective and combined serotonin and dopamine depletion on the loudness dependence of the auditory evoked potential (LDAEP) in humans (2008)

O'Neill, Barry V., Guille, Valerie, Croft, Rodney J., Leung, Sumie, Scholes, K. E., Phan, K. Luan, ...

The loudness dependence of the auditory evoked potential (LDAEP) has been suggested as a possible in vivo measure of central serotonin function. However, more recent studies suggest that the LDAEP...

The loudness dependence of the auditory evoked potential (LDAEP) as an in iivo biomarker of central serotonergic function in humans: rationale, evaluation and review of findings (2008)

O'Neill, Barry V., Croft, Rodney J., Nathan, Pradeep J.

The loudness dependence of the auditory evoked potential (LDAEP) has been proposed as a valid means of non-invasively assessing in vivo central serotonin (5-hydroxytryptamine, 5-HT) function in...

Effects of selective and combined serotonin and dopamine depletion on the loudness dependence of the auditory evoked potential (LDAEP) in humans (2008)

O'Neill, Barry V., Guille, Valerie, Croft, Rodney J., Leung, Sumie, Scholes, K. E., Phan, K. Luan, ...

The loudness dependence of the auditory evoked potential (LDAEP) has been suggested as a possible in vivo measure of central serotonin function. However, more recent studies suggest that the LDAEP...

The cognitive effects of modulating the glycine site of the NMDA receptor with high-dose glycine in healthy controls (2008)

Palmer, Colin, Ellis, Kathryn A., O'Neill, Barry V., Croft, Rodney J., Leung, Sumie, Oliver, Chris, ...

N-methyl-D-aspartate (NMDA) receptors play an important role in learning and memory. Targeting the glycine modulatory site of the NMDA receptor has been suggested as a therapeutic strategy to improve...

Acute high-dose glycine attenuates mismatch negativity (MMN) in healthy human controls (2008)

Leung, Sumie, Croft, Rodney J., O'Neill, Barry V., Nathan, Pradeep J.

Schizophrenia is commonly associated with impairments in pre-attentive change detection as represented by reduced mismatch negativity (MMN). The neurochemical basis of MMN has been linked to...

Differential effects of acute serotonin and dopamine depletion on prepulse inhibition and P50 suppression measures of sensorimotor and sensory gating in humans (2008)

Mann, Collette, Croft, Rodney J., Scholes, Kirsty E., Dunne, Alan, O'Neill, Barry V., Leung, Sumie, ...

Schizophrenia is associated with impairments of sensorimotor and sensory gating as measured by prepulse inhibition (PPI) of the acoustic startle response and P50 suppression of the auditory...

Pre- and post-synaptic dopamine imaging and its relation with frontostriatal cognitive function in Parkinson disease: PET studies with [11C]NNC 112 and [18F]FDOPA (2008)

Cropley, Vanessa L., Fujita, Masahiro, Bara-Jimenez, William, Brown, Amira K., Zhang, Xiang-Yiang, Sangare, Janet, ...

Frontostriatal cognitive dysfunction is common in Parkinson disease (PD), but the explanation for its heterogeneous expressions remains unclear. This study examined the dopamine system within the...

Small effect of dopamine release and no effect of dopamine depletion on [18F]fallypride binding in healthy humans (2008)

Cropley, Vanessa L., Innis, Robert B., Nathan, Pradeep J., Brown, Amira K., Sangare, Janet, Lerner, Alicja Lerner, ...

Molecular imaging has been used to estimate both drug-induced and tonic dopamine release in the striatum and most recently extrastriatal areas of healthy humans. However, to date, studies of...

An examination of acute changes in serotonergic neurotransmission using the loudness dependence measure of auditory cortex evoked activity: effects of citalopram, escitalopram and sertraline (2008)

Guille, Valerie, Croft, Rodney J., O'Neill, Barry V., Illic, Susan, Phan, K. Luan, Nathan, Pradeep J.

The underlying effect of serotonergic neurotransmission has been implicated in several psychiatric disorders. The inability to routinely and non-invasively determine the integrity of the serotonergic...

The loudness dependence of the auditory evoked potential (LDAEP) as an in iivo biomarker of central serotonergic function in humans: rationale, evaluation and review of findings (2008)

O'Neill, Barry V., Croft, Rodney J., Nathan, Pradeep J.

The loudness dependence of the auditory evoked potential (LDAEP) has been proposed as a valid means of non-invasively assessing in vivo central serotonin (5-hydroxytryptamine, 5-HT) function in...

Effects of selective and combined serotonin and dopamine depletion on the loudness dependence of the auditory evoked potential (LDAEP) in humans (2008)

O'Neill, Barry V., Guille, Valerie, Croft, Rodney J., Leung, Sumie, Scholes, K. E., Phan, K. Luan, ...

The loudness dependence of the auditory evoked potential (LDAEP) has been suggested as a possible in vivo measure of central serotonin function. However, more recent studies suggest that the LDAEP...

The cognitive effects of modulating the glycine site of the NMDA receptor with high-dose glycine in healthy controls (2008)

Palmer, Colin, Ellis, Kathryn A., O'Neill, Barry V., Croft, Rodney J., Leung, Sumie, Oliver, Chris, ...

N-methyl-D-aspartate (NMDA) receptors play an important role in learning and memory. Targeting the glycine modulatory site of the NMDA receptor has been suggested as a therapeutic strategy to improve...

Acute high-dose glycine attenuates mismatch negativity (MMN) in healthy human controls (2008)

Leung, Sumie, Croft, Rodney J., O'Neill, Barry V., Nathan, Pradeep J.

Schizophrenia is commonly associated with impairments in pre-attentive change detection as represented by reduced mismatch negativity (MMN). The neurochemical basis of MMN has been linked to...

The loudness dependence of the auditory evoked potential (LDAEP) as an in iivo biomarker of central serotonergic function in humans: rationale, evaluation and review of findings (2008)

O'Neill, Barry V., Croft, Rodney J., Nathan, Pradeep J.

The loudness dependence of the auditory evoked potential (LDAEP) has been proposed as a valid means of non-invasively assessing in vivo central serotonin (5-hydroxytryptamine, 5-HT) function in...

Effects of selective and combined serotonin and dopamine depletion on the loudness dependence of the auditory evoked potential (LDAEP) in humans (2008)

O'Neill, Barry V., Guille, Valerie, Croft, Rodney J., Leung, Sumie, Scholes, K. E., Phan, K. Luan, ...

The loudness dependence of the auditory evoked potential (LDAEP) has been suggested as a possible in vivo measure of central serotonin function. However, more recent studies suggest that the LDAEP...

Evidence for modulation of facial emotional processing bias during emotional expression decoding by serotonergic and noradrenergic antidepressants: an event-related potential (ERP) study (2008)

Kerestes, Rebecca, Labuschagne, Izelle, Croft, Rodney J., O'Neill, Barry V., Bhagwagar, Zubin, Phan, K. Luan, ...

Serotonergic (SSRI) and noradrenergic (NRI) antidepressants modulate biases in emotional processing such that perceptual bias is shifted away from negative and towards positive emotional material....

Estradiol treatment and its interaction with the cholinergic system: effects on cognitive function in healthy young women (2008)

Bartholomeusz, Cali F., Wesnes, Keith A., Kulkarni, Jayashri, Vitetta, Luis, Croft, Rodney J., Nathan, Pradeep J.

The steroid hormone estradiol has been shown to modulate cognitive function in both animals and humans, and although the exact mechanisms associated with these effects are unknown, interactions with...

Examining the nootropic effects of a special extract of Bacopa monniera on human cognitive functioning: 90 day double-blind placebo-controlled randomized trial (2008)

Stough, Con, Downey, Luke A., Lloyd, Jenny, Silber, Beata, Redman, Stephanie, Hutchison, Chris, ...

While Ayurvedic medicine has touted the cognitive enhancing effects of Bacopa monniera for centuries, there is a need for double-blind placebo-controlled investigations. One hundred and seven healthy...

Differential effects of acute serotonin and dopamine depletion on prepulse inhibition and P50 suppression measures of sensorimotor and sensory gating in humans (2008)

Mann, Collette, Croft, Rodney J., Scholes, Kirsty E., Dunne, Alan, O'Neill, Barry V., Leung, Sumie, ...

Schizophrenia is associated with impairments of sensorimotor and sensory gating as measured by prepulse inhibition (PPI) of the acoustic startle response and P50 suppression of the auditory...

Pre- and post-synaptic dopamine imaging and its relation with frontostriatal cognitive function in Parkinson disease: PET studies with [11C]NNC 112 and [18F]FDOPA (2008)

Cropley, Vanessa L., Fujita, Masahiro, Bara-Jimenez, William, Brown, Amira K., Zhang, Xiang-Yiang, Sangare, Janet, ...

Frontostriatal cognitive dysfunction is common in Parkinson disease (PD), but the explanation for its heterogeneous expressions remains unclear. This study examined the dopamine system within the...

Small effect of dopamine release and no effect of dopamine depletion on [18F]fallypride binding in healthy humans (2008)

Cropley, Vanessa L., Innis, Robert B., Nathan, Pradeep J., Brown, Amira K., Sangare, Janet, Lerner, Alicja Lerner, ...

Molecular imaging has been used to estimate both drug-induced and tonic dopamine release in the striatum and most recently extrastriatal areas of healthy humans. However, to date, studies of...

An examination of acute changes in serotonergic neurotransmission using the loudness dependence measure of auditory cortex evoked activity: effects of citalopram, escitalopram and sertraline (2008)

Guille, Valerie, Croft, Rodney J., O'Neill, Barry V., Illic, Susan, Phan, K. Luan, Nathan, Pradeep J.

The underlying effect of serotonergic neurotransmission has been implicated in several psychiatric disorders. The inability to routinely and non-invasively determine the integrity of the serotonergic...

The cognitive effects of modulating the glycine site of the NMDA receptor with high-dose glycine in healthy controls (2008)

Palmer, Colin, Ellis, Kathryn A., O'Neill, Barry V., Croft, Rodney J., Leung, Sumie, Oliver, Chris, ...

N-methyl-D-aspartate (NMDA) receptors play an important role in learning and memory. Targeting the glycine modulatory site of the NMDA receptor has been suggested as a therapeutic strategy to improve...

Acute high-dose glycine attenuates mismatch negativity (MMN) in healthy human controls (2008)

Leung, Sumie, Croft, Rodney J., O'Neill, Barry V., Nathan, Pradeep J.

Schizophrenia is commonly associated with impairments in pre-attentive change detection as represented by reduced mismatch negativity (MMN). The neurochemical basis of MMN has been linked to...

The loudness dependence of the auditory evoked potential (LDAEP) as an in iivo biomarker of central serotonergic function in humans: rationale, evaluation and review of findings (2008)

O'Neill, Barry V., Croft, Rodney J., Nathan, Pradeep J.

The loudness dependence of the auditory evoked potential (LDAEP) has been proposed as a valid means of non-invasively assessing in vivo central serotonin (5-hydroxytryptamine, 5-HT) function in...

Effects of selective and combined serotonin and dopamine depletion on the loudness dependence of the auditory evoked potential (LDAEP) in humans (2008)

O'Neill, Barry V., Guille, Valerie, Croft, Rodney J., Leung, Sumie, Scholes, K. E., Phan, K. Luan, ...

The loudness dependence of the auditory evoked potential (LDAEP) has been suggested as a possible in vivo measure of central serotonin function. However, more recent studies suggest that the LDAEP...

Evidence for modulation of facial emotional processing bias during emotional expression decoding by serotonergic and noradrenergic antidepressants: an event-related potential (ERP) study (2008)

Kerestes, Rebecca, Labuschagne, Izelle, Croft, Rodney J., O'Neill, Barry V., Bhagwagar, Zubin, Phan, K. Luan, ...

Serotonergic (SSRI) and noradrenergic (NRI) antidepressants modulate biases in emotional processing such that perceptual bias is shifted away from negative and towards positive emotional material....

Estradiol treatment and its interaction with the cholinergic system: effects on cognitive function in healthy young women (2008)

Bartholomeusz, Cali F., Wesnes, Keith A., Kulkarni, Jayashri, Vitetta, Luis, Croft, Rodney J., Nathan, Pradeep J.

The steroid hormone estradiol has been shown to modulate cognitive function in both animals and humans, and although the exact mechanisms associated with these effects are unknown, interactions with...

Examining the nootropic effects of a special extract of Bacopa monniera on human cognitive functioning: 90 day double-blind placebo-controlled randomized trial (2008)

Stough, Con, Downey, Luke A., Lloyd, Jenny, Silber, Beata, Redman, Stephanie, Hutchison, Chris, ...

While Ayurvedic medicine has touted the cognitive enhancing effects of Bacopa monniera for centuries, there is a need for double-blind placebo-controlled investigations. One hundred and seven healthy...

Acute serotonin and dopamine depletion improves attentional control : findings from the Stroop task (2007)

Scholes, Kirsty E., Harrison, Ben J., O'Neill, Barry V., Leung, Sumie, Croft, Rodney J., Pipingas, Andrew, ...

Schizophrenia is associated with impairments of attentional control on classic experimental paradigms such as the Stroop task. However, at a basic level the neurochemical mechanisms that may be...

Tyrosine depletion alters cortical and limbic blood flow but does not modulate spatial working memory performance or task-related blood flow in humans (2007)

Ellis, Kathryn A., Mehta, Mitul A., McTavish, Sarah F. B., Nathan, Pradeep J., Grasby, Paul M., ...

Dopamine appears critical in regulating spatial working memory (SWM) within the PFC of non-human primates; however findings in humans are less clear. Recent studies of the effects of global depletion...

Acute serotonin and dopamine depletion improves attentional control : findings from the Stroop task (2007)

Scholes, Kirsty E., Harrison, Ben J., O'Neill, Barry V., Leung, Sumie, Croft, Rodney J., Pipingas, Andrew, ...

Schizophrenia is associated with impairments of attentional control on classic experimental paradigms such as the Stroop task. However, at a basic level the neurochemical mechanisms that may be...

Tyrosine depletion alters cortical and limbic blood flow but does not modulate spatial working memory performance or task-related blood flow in humans (2007)

Ellis, Kathryn A., Mehta, Mitul A., McTavish, Sarah F. B., Nathan, Pradeep J., Grasby, Paul M.

Dopamine appears critical in regulating spatial working memory (SWM) within the PFC of non-human primates; however findings in humans are less clear. Recent studies of the effects of global depletion...

Acute dopamine D1 and D2 receptor stimulation does not modulate mismatch negativity (MMN) in healthy human subjects (2007)

Leung, Sumie, Croft, Rodney J., Baldeweg, Torsten, Nathan, Pradeep J.

Schizophrenia is commonly associated with an impairment in pre-attentive change detection, as represented by reduced mismatch negativity (MMN), an auditory event related potential. While the...

Acute serotonin and dopamine depletion improves attentional control : findings from the Stroop task (2007)

Scholes, Kirsty E., Harrison, Ben J., O'Neill, Barry V., Leung, Sumie, Croft, Rodney J., Pipingas, Andrew, ...

Schizophrenia is associated with impairments of attentional control on classic experimental paradigms such as the Stroop task. However, at a basic level the neurochemical mechanisms that may be...

Tyrosine depletion alters cortical and limbic blood flow but does not modulate spatial working memory performance or task-related blood flow in humans (2007)

Ellis, Kathryn A., Mehta, Mitul A., McTavish, Sarah F. B., Nathan, Pradeep J., Grasby, Paul M.

Dopamine appears critical in regulating spatial working memory (SWM) within the PFC of non-human primates; however findings in humans are less clear. Recent studies of the effects of global depletion...

Acute dopamine D1 and D2 receptor stimulation does not modulate mismatch negativity (MMN) in healthy human subjects (2007)

Leung, Sumie, Croft, Rodney J., Baldeweg, Torsten, Nathan, Pradeep J.

Schizophrenia is commonly associated with an impairment in pre-attentive change detection, as represented by reduced mismatch negativity (MMN), an auditory event related potential. While the...

Acute serotonin and dopamine depletion improves attentional control : findings from the Stroop task (2007)

Scholes, Kirsty E., Harrison, Ben J., O'Neill, Barry V., Leung, Sumie, Croft, Rodney J., Pipingas, Andrew, ...

Schizophrenia is associated with impairments of attentional control on classic experimental paradigms such as the Stroop task. However, at a basic level the neurochemical mechanisms that may be...

Tyrosine depletion alters cortical and limbic blood flow but does not modulate spatial working memory performance or task-related blood flow in humans (2007)

Ellis, Kathryn A., Mehta, Mitul A., McTavish, Sarah F. B., Nathan, Pradeep J., Grasby, Paul M.

Dopamine appears critical in regulating spatial working memory (SWM) within the PFC of non-human primates; however findings in humans are less clear. Recent studies of the effects of global depletion...

Acute dopamine D1 and D2 receptor stimulation does not modulate mismatch negativity (MMN) in healthy human subjects (2007)

Leung, Sumie, Croft, Rodney J., Baldeweg, Torsten, Nathan, Pradeep J.

Schizophrenia is commonly associated with an impairment in pre-attentive change detection, as represented by reduced mismatch negativity (MMN), an auditory event related potential. While the...

Acute dopamine D1 and D2 receptor stimulation does not modulate mismatch negativity (MMN) in healthy human subjects (2007)

Leung, Sumie, Croft, Rodney J., Baldeweg, Torsten, Nathan, Pradeep J.

Schizophrenia is commonly associated with an impairment in pre-attentive change detection, as represented by reduced mismatch negativity (MMN), an auditory event related potential. While the...

High-dose glycine inhibits the loudness dependence of the auditory evoked potential (LDAEP) in healthy humans (2007)

O'Neill, Barry V., Croft, Rodney J., Leung, Sumie, Oliver, Chris, Phan, K. Luan, Nathan, Pradeep J.

The loudness dependence of the auditory evoked Potential (LDAEP) has been suggested to be a putative marker of central serotonin function, with reported abnormalities in clinical disorders presumed...

Acute serotonin and dopamine depletion improves attentional control : findings from the Stroop task (2007)

Scholes, Kirsty E., Harrison, Ben J., O'Neill, Barry V., Leung, Sumie, Croft, Rodney J., Pipingas, Andrew, ...

Schizophrenia is associated with impairments of attentional control on classic experimental paradigms such as the Stroop task. However, at a basic level the neurochemical mechanisms that may be...

Tyrosine depletion alters cortical and limbic blood flow but does not modulate spatial working memory performance or task-related blood flow in humans (2007)

Ellis, Kathryn A., Mehta, Mitul A., McTavish, Sarah F. B., Nathan, Pradeep J., Grasby, Paul M.

Dopamine appears critical in regulating spatial working memory (SWM) within the PFC of non-human primates; however findings in humans are less clear. Recent studies of the effects of global depletion...

Acute dopamine D1 and D2 receptor stimulation does not modulate mismatch negativity (MMN) in healthy human subjects (2007)

Leung, Sumie, Croft, Rodney J., Baldeweg, Torsten, Nathan, Pradeep J.

Schizophrenia is commonly associated with an impairment in pre-attentive change detection, as represented by reduced mismatch negativity (MMN), an auditory event related potential. While the...

High-dose glycine inhibits the loudness dependence of the auditory evoked potential (LDAEP) in healthy humans (2007)

O'Neill, Barry V., Croft, Rodney J., Leung, Sumie, Oliver, Chris, Phan, K. Luan, Nathan, Pradeep J.

The loudness dependence of the auditory evoked Potential (LDAEP) has been suggested to be a putative marker of central serotonin function, with reported abnormalities in clinical disorders presumed...

Amygdala frontal connectivity during emotion regulation (2007)

Banks, Sarah J., Eddy, Kamryn T., Angstadt, Mike, Nathan, Pradeep J., Phan, K. Luan

Successful control of affect partly depends on the capacity to modulate negative emotional responses through the use of cognitive strategies (i.e., reappraisal). Recent studies suggest the...

Exploring the temporal dynamics of the spatial working memory n-back task using steady state visual evoked potentials (SSVEP) (2006)

Ellis, Kathryn A., Silberstein, Richard B., Nathan, Pradeep J.

The neural networks associated with spatial working memory (SWM) are well established. However, the temporal dynamics of SWM-related brain activity are less clear. This study examined changes in...

Muscarinic and nicotinic receptors synergistically modulate working memory and attention in humans (2006)

Ellis, Julia R., Ellis, Kathryn A., Bartholomeusz, Cali F., Harrison, Ben J., Wesnes, Keith A., Erskine, Fiona F., ...

Functional abnormalities in muscarinic and nicotinic receptors are associated with a number of disorders including Alzheimer's disease and schizophrenia. While the contribution of muscarinic...

The neuropharmacology of L-theanine(N-ethyl-L-glutamine) : a possible neuroprotective and cognitive enhancing agent (2006)

Nathan, Pradeep J., Lu, Kristy, Gray, Marcus, Oliver, Christopher

L-theanine (N-ethyl-L-glutamine) or theanine is a major amino acid uniquely found in green tea. L-theanine has been historically reported as a relaxing agent, prompting scientific research on its...

Dopamine receptor stimulation does not modulate the loudness dependence of the auditory evoked potential in humans (2006)

O'Neill, Barry V., Croft, Rodney J., Leung, Sumie, Guille, Valerie, Galloway, Matthew, Phan, K. Luan, ...

Rationale: The Loudness Dependence of the Auditory Evoked Potential (LDAEP) has been suggested as a reliable measure of central serotonin function in humans; however, its specificity for the...

Pindolol does not augment central serotonin function increases to citalopram in humans : an auditory evoked potential investigation (2006)

Segrave, Rebecca, Croft, Rodney J., Illic, Susan, Luan Phan, K., Nathan, Pradeep J.

Animal studies have demonstrated that the co-administration of pindolol and selective serotonin reuptake inhibitors (SSRIs) potentiate serotonergic functioning to a greater degree than SSRIs alone....

Acute serotonin and dopamine depletion improves attentional control : findings from the Stroop task (2006)

Scholes, Kirsty E., Harrison, Ben J., O’Neill, Barry V., Leung, Sumie, Croft, Rodney J., Pipingas, Andrew, ...

Schizophrenia is associated with impairments of attentional control on classic experimental paradigms such as the Stroop task. However, at a basic level the neurochemical mechanisms that may be...

Estrogen prevents 5-HT1A receptor-induced disruptions of prepulse inhibition in healthy women (2006)

Gogos, Andrea, Nathan, Pradeep J., Guille, Valerie, Croft, Rodney J., Van Den Buuse, Maarten

The sex steroid hormone, estrogen, has been proposed to be protective against schizophrenia. This study examined the effects of estrogen treatment on modulation of prepulse inhibition (PPI) by the...

The neuropharmacology of L-theanine(N-ethyl-L-glutamine): a possible neuroprotective and cognitive enhancing agent (2006)

Nathan, Pradeep J., Lu, Kristy, Gray, Marcus, Oliver, Chris

L-theanine (N-ethyl-L-glutamine) or theanine is a major amino acid uniquely found in green tea. L-theanine has been historically reported as a relaxing agent, prompting scientific research on its...

Dopamine receptor stimulation does not modulate the loudness dependence of the auditory evoked potential in humans (2006)

O'Neill, Barry V., Croft, Rodney J., Leung, Sumie, Guille, Valerie, Galloway, Matthew, Phan, K. Luan, ...

Rationale: The Loudness Dependence of the Auditory Evoked Potential (LDAEP) has been suggested as a reliable measure of central serotonin function in humans; however, its specificity for the...

Pindolol does not augment central serotonin function increases to citalopram in humans : an auditory evoked potential investigation (2006)

Segrave, Rebecca, Croft, Rodney J., Illic, Susan, Luan Phan, K., Nathan, Pradeep J.

Animal studies have demonstrated that the co-administration of pindolol and selective serotonin reuptake inhibitors (SSRIs) potentiate serotonergic functioning to a greater degree than SSRIs alone....

Estrogen prevents 5-HT1A receptor-induced disruptions of prepulse inhibition in healthy women (2006)

Gogos, Andrea, Nathan, Pradeep J., Guille, Valerie, Croft, Rodney J., Van Den Buuse, Maarten

The sex steroid hormone, estrogen, has been proposed to be protective against schizophrenia. This study examined the effects of estrogen treatment on modulation of prepulse inhibition (PPI) by the...

Exploring the temporal dynamics of the spatial working memory n-back task using steady state visual evoked potentials (SSVEP) (2006)

Ellis, Kathryn A., Silberstein, Richard B., Nathan, Pradeep J.

The neural networks associated with spatial working memory (SWM) are well established. However, the temporal dynamics of SWM-related brain activity are less clear. This study examined changes in...

Acute serotonin and dopamine depletion improves attentional control : findings from the Stroop task (2006)

Scholes, Kirsty E., Harrison, Ben J., O’Neill, Barry V., Leung, Sumie, Croft, Rodney J., Pipingas, Andrew, ...

Schizophrenia is associated with impairments of attentional control on classic experimental paradigms such as the Stroop task. However, at a basic level the neurochemical mechanisms that may be...

Muscarinic and nicotinic receptors synergistically modulate working memory and attention in humans (2006)

Ellis, Julia R., Ellis, Kathryn A., Bartholomeusz, Cali F., Harrison, Ben J., Wesnes, Keith A., Erskine, Fiona F., ...

Functional abnormalities in muscarinic and nicotinic receptors are associated with a number of disorders including Alzheimer's disease and schizophrenia. While the contribution of muscarinic...

The neuropharmacology of L-theanine(N-ethyl-L-glutamine) : a possible neuroprotective and cognitive enhancing agent (2006)

Nathan, Pradeep J., Lu, Kristy, Gray, Marcus, Oliver, Christopher

L-theanine (N-ethyl-L-glutamine) or theanine is a major amino acid uniquely found in green tea. L-theanine has been historically reported as a relaxing agent, prompting scientific research on its...

Dopamine receptor stimulation does not modulate the loudness dependence of the auditory evoked potential in humans (2006)

O'Neill, Barry V., Croft, Rodney J., Leung, Sumie, Guille, Valerie, Galloway, Matthew, Phan, K. Luan, ...

Rationale: The Loudness Dependence of the Auditory Evoked Potential (LDAEP) has been suggested as a reliable measure of central serotonin function in humans; however, its specificity for the...

Pindolol does not augment central serotonin function increases to citalopram in humans : an auditory evoked potential investigation (2006)

Segrave, Rebecca, Croft, Rodney J., Illic, Susan, Luan Phan, K., Nathan, Pradeep J.

Animal studies have demonstrated that the co-administration of pindolol and selective serotonin reuptake inhibitors (SSRIs) potentiate serotonergic functioning to a greater degree than SSRIs alone....

Estrogen prevents 5-HT1A receptor-induced disruptions of prepulse inhibition in healthy women (2006)

Gogos, Andrea, Nathan, Pradeep J., Guille, Valerie, Croft, Rodney J., Van Den Buuse, Maarten

The sex steroid hormone, estrogen, has been proposed to be protective against schizophrenia. This study examined the effects of estrogen treatment on modulation of prepulse inhibition (PPI) by the...

Exploring the temporal dynamics of the spatial working memory n-back task using steady state visual evoked potentials (SSVEP) (2006)

Ellis, Kathryn A., Silberstein, Richard B., Nathan, Pradeep J.

The neural networks associated with spatial working memory (SWM) are well established. However, the temporal dynamics of SWM-related brain activity are less clear. This study examined changes in...

Acute serotonin and dopamine depletion improves attentional control : findings from the Stroop task (2006)

Scholes, Kirsty E., Harrison, Ben J., O’Neill, Barry V., Leung, Sumie, Croft, Rodney J., Pipingas, Andrew, ...

Schizophrenia is associated with impairments of attentional control on classic experimental paradigms such as the Stroop task. However, at a basic level the neurochemical mechanisms that may be...

Muscarinic and nicotinic receptors synergistically modulate working memory and attention in humans (2006)

Ellis, Julia R., Ellis, Kathryn A., Bartholomeusz, Cali F., Harrison, Ben J., Wesnes, Keith A., Erskine, Fiona F., ...

Functional abnormalities in muscarinic and nicotinic receptors are associated with a number of disorders including Alzheimer's disease and schizophrenia. While the contribution of muscarinic...

Exploring the temporal dynamics of the spatial working memory n-back task using steady state visual evoked potentials (SSVEP) (2006)

Ellis, Kathryn A., Silberstein, Richard B., Nathan, Pradeep J.

The neural networks associated with spatial working memory (SWM) are well established. However, the temporal dynamics of SWM-related brain activity are less clear. This study examined changes in...

Muscarinic and nicotinic receptors synergistically modulate working memory and attention in humans (2006)

Ellis, Julia R., Ellis, Kathryn A., Bartholomeusz, Cali F., Harrison, Ben J., Wesnes, Keith A., Erskine, Fiona F., ...

Functional abnormalities in muscarinic and nicotinic receptors are associated with a number of disorders including Alzheimer's disease and schizophrenia. While the contribution of muscarinic...

Pindolol does not augment central serotonin function increases to citalopram in humans : an auditory evoked potential investigation (2006)

Segrave, Rebecca, Croft, Rodney J., Illic, Susan, Luan Phan, K., Nathan, Pradeep J.

Animal studies have demonstrated that the co-administration of pindolol and selective serotonin reuptake inhibitors (SSRIs) potentiate serotonergic functioning to a greater degree than SSRIs alone....

The neuropharmacology of L-theanine(N-ethyl-L-glutamine) : a possible neuroprotective and cognitive enhancing agent (2006)

Nathan, Pradeep J., Lu, Kristy, Gray, Marcus, Oliver, Christopher

L-theanine (N-ethyl-L-glutamine) or theanine is a major amino acid uniquely found in green tea. L-theanine has been historically reported as a relaxing agent, prompting scientific research on its...

Dopamine receptor stimulation does not modulate the loudness dependence of the auditory evoked potential in humans (2006)

O'Neill, Barry V., Croft, Rodney J., Leung, Sumie, Guille, Valerie, Galloway, Matthew, Phan, K. Luan, ...

Rationale: The Loudness Dependence of the Auditory Evoked Potential (LDAEP) has been suggested as a reliable measure of central serotonin function in humans; however, its specificity for the...

Acute serotonin and dopamine depletion improves attentional control : findings from the Stroop task (2006)

Scholes, Kirsty E., Harrison, Ben J., O’Neill, Barry V., Leung, Sumie, Croft, Rodney J., Pipingas, Andrew, ...

Schizophrenia is associated with impairments of attentional control on classic experimental paradigms such as the Stroop task. However, at a basic level the neurochemical mechanisms that may be...

Estrogen prevents 5-HT1A receptor-induced disruptions of prepulse inhibition in healthy women (2006)

Gogos, Andrea, Nathan, Pradeep J., Guille, Valerie, Croft, Rodney J., Van Den Buuse, Maarten

The sex steroid hormone, estrogen, has been proposed to be protective against schizophrenia. This study examined the effects of estrogen treatment on modulation of prepulse inhibition (PPI) by the...

Estrogen prevents 5-HT1A receptor-induced disruptions of prepulse inhibition in healthy women (2006)

Gogos, Andrea, Nathan, Pradeep J., Guille, Valerie, Croft, Rodney J., Van Den Buuse, Maarten

The sex steroid hormone, estrogen, has been proposed to be protective against schizophrenia. This study examined the effects of estrogen treatment on modulation of prepulse inhibition (PPI) by the...

Muscarinic and nicotinic receptors synergistically modulate working memory and attention in humans (2006)

Ellis, Julia R., Ellis, Kathryn A., Bartholomeusz, Cali F., Harrison, Ben J., Wesnes, Keith A., Erskine, Fiona F., ...

Functional abnormalities in muscarinic and nicotinic receptors are associated with a number of disorders including Alzheimer’s disease and schizophrenia. While the contribution of muscarinic...

Exploring the temporal dynamics of the spatial working memory n-back task using steady state visual evoked potentials (SSVEP) (2006)

Ellis, Kathryn A., Silberstein, Richard B., Nathan, Pradeep J.

The neural networks associated with spatial working memory (SWM) are well established. However, the temporal dynamics of SWM-related brain activity are less clear. This study examined changes in...

Muscarinic and nicotinic receptors synergistically modulate working memory and attention in humans (2006)

Ellis, Julia R., Ellis, Kathryn A., Bartholomeusz, Cali F., Harrison, Ben J., Wesnes, Keith A., Erskine, Fiona F., ...

Functional abnormalities in muscarinic and nicotinic receptors are associated with a number of disorders including Alzheimer's disease and schizophrenia. While the contribution of muscarinic...

Pindolol does not augment central serotonin function increases to citalopram in humans : an auditory evoked potential investigation (2006)

Segrave, Rebecca, Croft, Rodney J., Illic, Susan, Luan Phan, K., Nathan, Pradeep J.

Animal studies have demonstrated that the co-administration of pindolol and selective serotonin reuptake inhibitors (SSRIs) potentiate serotonergic functioning to a greater degree than SSRIs alone....

The neuropharmacology of L-theanine(N-ethyl-L-glutamine): a possible neuroprotective and cognitive enhancing agent (2006)

Nathan, Pradeep J., Lu, Kristy, Gray, Marcus, Oliver, Chris

L-theanine (N-ethyl-L-glutamine) or theanine is a major amino acid uniquely found in green tea. L-theanine has been historically reported as a relaxing agent, prompting scientific research on its...

Dopamine receptor stimulation does not modulate the loudness dependence of the auditory evoked potential in humans (2006)

O'Neill, Barry V., Croft, Rodney J., Leung, Sumie, Guille, Valerie, Galloway, Matthew, Phan, K. Luan, ...

Rationale: The Loudness Dependence of the Auditory Evoked Potential (LDAEP) has been suggested as a reliable measure of central serotonin function in humans; however, its specificity for the...

Acute serotonin and dopamine depletion improves attentional control : findings from the Stroop task (2006)

Scholes, Kirsty E., Harrison, Ben J., O’Neill, Barry V., Leung, Sumie, Croft, Rodney J., Pipingas, Andrew, ...

Schizophrenia is associated with impairments of attentional control on classic experimental paradigms such as the Stroop task. However, at a basic level the neurochemical mechanisms that may be...

Estrogen prevents 5-HT1A receptor-induced disruptions of prepulse inhibition in healthy women (2006)

Gogos, Andrea, Nathan, Pradeep J., Guille, Valerie, Croft, Rodney J., Van Den Buuse, Maarten

The sex steroid hormone, estrogen, has been proposed to be protective against schizophrenia. This study examined the effects of estrogen treatment on modulation of prepulse inhibition (PPI) by the...

Muscarinic and nicotinic receptor modulation of object and spatial n-back working memory in humans (2005)

Green, Amity, Ellis, Kathryn A., Ellis, Julia, Bartholomeusz, Cali F., Ilic, Susan, Croft, Rodney J., ...

Working memory impairments in the n-back task in schizophrenia have been linked to sustained deficiency in mesocortical dopamine function. More recently, abnormalities in the cholinergic system have...

Muscarinic and nicotinic receptor modulation of object and spatial n-back working memory in humans (2005)

Green, Amity, Ellis, Kathryn A., Ellis, Julia, Bartholomeusz, Cali F., Ilic, Susan, Croft, Rodney J., ...

Working memory impairments in the n-back task in schizophrenia have been linked to sustained deficiency in mesocortical dopamine function. More recently, abnormalities in the cholinergic system have...

Is the loudness dependence of the auditory evoked potential a sensitive and selective in vivo marker of central serotonergic function? (2005)

Croft, Rodney J., Nathan, Pradeep J., O'Neill, B.

Submitted as a Letter to the Editor discussing a recent article by Lang and colleagues, titled 'Association of BDNF serum concentrations with central serotonergic activity: Evidence from auditory...

Muscarinic and nicotinic receptor modulation of object and spatial n-back working memory in humans (2005)

Green, Amity, Ellis, Kathryn A., Ellis, Julia, Bartholomeusz, Cali F., Ilic, Susan, Croft, Rodney J., ...

Working memory impairments in the n-back task in schizophrenia have been linked to sustained deficiency in mesocortical dopamine function. More recently, abnormalities in the cholinergic system have...

Is the loudness dependence of the auditory evoked potential a sensitive and selective in vivo marker of central serotonergic function? (2005)

Croft, Rodney J., Nathan, Pradeep J., O'Neill, B.

Submitted as a Letter to the Editor discussing a recent article by Lang and colleagues, titled 'Association of BDNF serum concentrations with central serotonergic activity: Evidence from auditory...

Is the loudness dependence of the auditory evoked potential a sensitive and selective in vivo marker of central serotonergic function? (2005)

Croft, Rodney J., Nathan, Pradeep J., O'Neill, B.

Submitted as a Letter to the Editor discussing a recent article by Lang and colleagues, titled 'Association of BDNF serum concentrations with central serotonergic activity: Evidence from auditory...

Muscarinic and nicotinic receptor modulation of object and spatial n-back working memory in humans (2005)

Green, Amity, Ellis, Kathryn A., Ellis, Julia, Bartholomeusz, Cali F., Ilic, Susan, Croft, Rodney J., ...

Working memory impairments in the n-back task in schizophrenia have been linked to sustained deficiency in mesocortical dopamine function. More recently, abnormalities in the cholinergic system have...

Combined D1/D2 receptor stimulation under conditions of dopamine depletion impairs spatial working memory performance in humans (2005)

ELLIS, KATHRYN A, MEHTA, MITUL A, WESNES, KEITH A, ARMSTRONG, STUART, NATHAN, PRADEEP J

RATIONALE: The mesocortical dopamine system is regarded as an important modulator of working memory. While it has been established that stimulation of the D1/D2 receptor in primates can improve...

Is the loudness dependence of the auditory evoked potential a sensitive and selective in vivo marker of central serotonergic function? (2005)

Croft, Rodney J., Nathan, Pradeep J., O'Neill, B.

Submitted as a Letter to the Editor discussing a recent article by Lang and colleagues, titled 'Association of BDNF serum concentrations with central serotonergic activity: Evidence from auditory...

Muscarinic and nicotinic receptor modulation of object and spatial n-back working memory in humans (2005)

Green, Amity, Ellis, Kathryn A., Ellis, Julia, Bartholomeusz, Cali F., Ilic, Susan, Croft, Rodney J., ...

Working memory impairments in the n-back task in schizophrenia have been linked to sustained deficiency in mesocortical dopamine function. More recently, abnormalities in the cholinergic system have...

Combined D1/D2 receptor stimulation under conditions of dopamine depletion impairs spatial working memory performance in humans (2005)

ELLIS, KATHRYN A, MEHTA, MITUL A, WESNES, KEITH A, ARMSTRONG, STUART, NATHAN, PRADEEP J

RATIONALE: The mesocortical dopamine system is regarded as an important modulator of working memory. While it has been established that stimulation of the D1/D2 receptor in primates can improve...

Effects of a combined extract of Gingko biloba and Bacopa monniera on cognitive function in healthy humans (2004)

Nathan, Pradeep J., Tanner, Sally, Lloyd, Jenny, Harrison, Ben, Curran, Leah, Oliver, Chris, ...

Extracts of Ginkgo biloba and Bacopa monniera have been shown to produce positive effects on cognitive function in healthy subjects. While the exact mechanisms are not known, it has been suggested...

Neural correlates of internally-generated disgust via autobiographical recall : a functional magnetic resonance imaging investigation (2004)

Fitzgerald, Daniel A., Posse, Stefan, Moore, Gregory J., Tancer, Manual E., Nathan, Pradeep J., Phan, K. Luan, ...

Converging lines of evidence suggest the involvement of the insula and basal ganglia in the processing of disgust, an important primary emotion that guides the avoidance of potential physical...

Selective effects of acute serotonin and catecholamine depletion on memory in healthy women (2004)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Burrows, Graham D., Wesnes, Keith, Nathan, Pradeep J., ...

There is converging evidence that brain serotonin and dopamine may selectively modulate learning and memory in humans. However, this has not been directly demonstrated. In the current study, we used...

Simultaneous depletion of serotonin and catecholamines impairs sustained attention in healthy female subjects without affecting learning and memory (2004)

Matrenza, Cathy, Hughes, Jay-Maree, Kemp, Andrew H., Wesnes, Keith, Harrison, Ben J., Nathan, Pradeep J., ...

Monoamine neurotransmitters, serotonin, noradrenaline and dopamine modulate many important cognitive processes such as attention, learning and memory. While the selective effects of serotonin and...

Gender differences in the cortical electrophysiological processing of visual emotional stimuli (2004)

Kemp, Andrew H., Silberstein, Richard B., Armstrong, Stuart M., Nathan, Pradeep J.

The processing of visual emotional stimuli has been investigated previously; however, gender differences in the processing of emotional stimuli remain to be clarified. The aim of the current study...

Augmentation of serotonin enhances pleasant and suppresses unpleasant cortical electrophysiological responses to visual emotional stimuli in humans (2004)

Kemp, Andrew H., Gray, Marcus A., Silberstein, Richard B., Armstrong, Stuart M., Nathan, Pradeep J.

The serotonergic system is one of the major systems targeted in the pharmacological treatment of a wide range of mood disorders including depression; however, little is known about the...

Selective effects of simultaneous monoamine depletion on mood and emotional responsiveness (2004)

Hughes, Jay-Maree, Matrenza, Cathy, Kemp, Andrew H., Harrison, Ben J., Liley, David T. J., Nathan, Pradeep J., ...

Monoamines play a significant role in the regulation of mood and emotion. While the selective effects of serotonin and catecholamine depletion on mood have been described, the effects of simultaneous...

Evidence for synergistic modulation of early information processing by nicotinic and muscarinic receptors in humans (2004)

Erskine, Fiona F., Ellis, J. R., Ellis, Kathryn A., Stuber, E., Hogan, K., Miller, V., ...

Impairments in early information processing are a hallmark feature of diverse neuropsychiatric disorders including schizophrenia and Alzheimer's disease (AD). Several lines of evidence implicate a...

The acute effects of L-theanine in comparison with alprazolam on anticipatory anxiety in humans (2004)

Liu, Kirsty, Gray, Marcus A., Oliver, Chris, Liley, David T. J., Harrison, Ben J., Bartholomeusz, Cali F., ...

L-Theanine (-glutamylethylamide) is one of the predominant amino acids ordinarily found in green tea, and historically has been used as a relaxing agent. The current study examined the acute effects...

Simultaneous depletion of tryptophan, tyrosine and phenylalanine as an experimental method to probe brain monoamine function in humans (2004)

Nathan, Pradeep J., Hughes, Jay-Maree, McInerney, Bernie, Harrison, Ben J.

Brain monoamines are important regulators of affective and cognitive processes and are involved in the aetiology of a number of psychiatric disorders. While methods to probe serotonin and...

Evidence for synergistic modulation of early information processing by nicotinic and muscarinic receptors in humans (2004)

Erskine, Fiona F., Ellis, J. R., Ellis, Kathryn A., Stuber, E., Hogan, K., Miller, V., ...

Impairments in early information processing are a hallmark feature of diverse neuropsychiatric disorders including schizophrenia and Alzheimer's disease (AD). Several lines of evidence implicate a...

The acute effects of L-theanine in comparison with alprazolam on anticipatory anxiety in humans (2004)

Liu, Kirsty, Gray, Marcus A., Oliver, Chris, Liley, David T. J., Harrison, Ben J., Bartholomeusz, Cali F., ...

L-Theanine (-glutamylethylamide) is one of the predominant amino acids ordinarily found in green tea, and historically has been used as a relaxing agent. The current study examined the acute effects...

Acute augmentation of serotonin suppresses cardiovascular responses to emotional valence (2004)

Kemp, Andrew H., Nathan, Pradeep J.

A key component in visceral reactivity to emotional states is heart rate (HR), however little is known about how HR response to emotional stimuli is modulated by neurochemicals. The present study...

Simultaneous depletion of tryptophan, tyrosine and phenylalanine as an experimental method to probe brain monoamine function in humans (2004)

Nathan, Pradeep J., Hughes, Jay-Maree, McInerney, Bernie, Harrison, Ben J.

Brain monoamines are important regulators of affective and cognitive processes and are involved in the aetiology of a number of psychiatric disorders. While methods to probe serotonin and...

Effects of a combined extract of Gingko biloba and Bacopa monniera on cognitive function in healthy humans (2004)

Nathan, Pradeep J., Tanner, Sally, Lloyd, Jenny, Harrison, Ben, Curran, Leah, Oliver, Chris, ...

Extracts of Ginkgo biloba and Bacopa monniera have been shown to produce positive effects on cognitive function in healthy subjects. While the exact mechanisms are not known, it has been suggested...

Neural correlates of internally-generated disgust via autobiographical recall : a functional magnetic resonance imaging investigation (2004)

Fitzgerald, Daniel A., Posse, Stefan, Moore, Gregory J., Tancer, Manual E., Nathan, Pradeep J., Phan, K. Luan, ...

Converging lines of evidence suggest the involvement of the insula and basal ganglia in the processing of disgust, an important primary emotion that guides the avoidance of potential physical...

Selective effects of acute serotonin and catecholamine depletion on memory in healthy women (2004)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Burrows, Graham D., Wesnes, Keith, Nathan, Pradeep J.

There is converging evidence that brain serotonin and dopamine may selectively modulate learning and memory in humans. However, this has not been directly demonstrated. In the current study, we used...

Simultaneous depletion of serotonin and catecholamines impairs sustained attention in healthy female subjects without affecting learning and memory (2004)

Matrenza, Cathy, Hughes, Jay-Maree, Kemp, Andrew H., Wesnes, Keith, Harrison, Ben J., Nathan, Pradeep J.

Monoamine neurotransmitters, serotonin, noradrenaline and dopamine modulate many important cognitive processes such as attention, learning and memory. While the selective effects of serotonin and...

Gender differences in the cortical electrophysiological processing of visual emotional stimuli (2004)

Kemp, Andrew H., Silberstein, Richard B., Armstrong, Stuart M., Nathan, Pradeep J.

The processing of visual emotional stimuli has been investigated previously; however, gender differences in the processing of emotional stimuli remain to be clarified. The aim of the current study...

Augmentation of serotonin enhances pleasant and suppresses unpleasant cortical electrophysiological responses to visual emotional stimuli in humans (2004)

Kemp, Andrew H., Gray, Marcus A., Silberstein, Richard B., Armstrong, Stuart M., Nathan, Pradeep J.

The serotonergic system is one of the major systems targeted in the pharmacological treatment of a wide range of mood disorders including depression; however, little is known about the...

Selective effects of simultaneous monoamine depletion on mood and emotional responsiveness (2004)

Hughes, Jay-Maree, Matrenza, Cathy, Kemp, Andrew H., Harrison, Ben J., Liley, David T. J., Nathan, Pradeep J.

Monoamines play a significant role in the regulation of mood and emotion. While the selective effects of serotonin and catecholamine depletion on mood have been described, the effects of simultaneous...

Evidence for synergistic modulation of early information processing by nicotinic and muscarinic receptors in humans (2004)

Erskine, Fiona F., Ellis, J. R., Ellis, Kathryn A., Stuber, E., Hogan, K., Miller, V., ...

Impairments in early information processing are a hallmark feature of diverse neuropsychiatric disorders including schizophrenia and Alzheimer's disease (AD). Several lines of evidence implicate a...

The acute effects of L-theanine in comparison with alprazolam on anticipatory anxiety in humans (2004)

Liu, Kirsty, Gray, Marcus A., Oliver, Chris, Liley, David T. J., Harrison, Ben J., Bartholomeusz, Cali F., ...

L-Theanine (-glutamylethylamide) is one of the predominant amino acids ordinarily found in green tea, and historically has been used as a relaxing agent. The current study examined the acute effects...

Acute augmentation of serotonin suppresses cardiovascular responses to emotional valence (2004)

Kemp, Andrew H., Nathan, Pradeep J.

A key component in visceral reactivity to emotional states is heart rate (HR), however little is known about how HR response to emotional stimuli is modulated by neurochemicals. The present study...

Simultaneous depletion of tryptophan, tyrosine and phenylalanine as an experimental method to probe brain monoamine function in humans (2004)

Nathan, Pradeep J., Hughes, Jay-Maree, McInerney, Bernie, Harrison, Ben J.

Brain monoamines are important regulators of affective and cognitive processes and are involved in the aetiology of a number of psychiatric disorders. While methods to probe serotonin and...

Effects of a combined extract of Gingko biloba and Bacopa monniera on cognitive function in healthy humans (2004)

Nathan, Pradeep J., Tanner, Sally, Lloyd, Jenny, Harrison, Ben, Curran, Leah, Oliver, Chris, ...

Extracts of Ginkgo biloba and Bacopa monniera have been shown to produce positive effects on cognitive function in healthy subjects. While the exact mechanisms are not known, it has been suggested...

Neural correlates of internally-generated disgust via autobiographical recall : a functional magnetic resonance imaging investigation (2004)

Fitzgerald, Daniel A., Posse, Stefan, Moore, Gregory J., Tancer, Manual E., Nathan, Pradeep J., Phan, K. Luan

Converging lines of evidence suggest the involvement of the insula and basal ganglia in the processing of disgust, an important primary emotion that guides the avoidance of potential physical...

Selective effects of acute serotonin and catecholamine depletion on memory in healthy women (2004)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Burrows, Graham D., Wesnes, Keith, Nathan, Pradeep J.

There is converging evidence that brain serotonin and dopamine may selectively modulate learning and memory in humans. However, this has not been directly demonstrated. In the current study, we used...

Simultaneous depletion of serotonin and catecholamines impairs sustained attention in healthy female subjects without affecting learning and memory (2004)

Matrenza, Cathy, Hughes, Jay-Maree, Kemp, Andrew H., Wesnes, Keith, Harrison, Ben J., Nathan, Pradeep J.

Monoamine neurotransmitters, serotonin, noradrenaline and dopamine modulate many important cognitive processes such as attention, learning and memory. While the selective effects of serotonin and...

Gender differences in the cortical electrophysiological processing of visual emotional stimuli (2004)

Kemp, Andrew H., Silberstein, Richard B., Armstrong, Stuart M., Nathan, Pradeep J.

The processing of visual emotional stimuli has been investigated previously; however, gender differences in the processing of emotional stimuli remain to be clarified. The aim of the current study...

Augmentation of serotonin enhances pleasant and suppresses unpleasant cortical electrophysiological responses to visual emotional stimuli in humans (2004)

Kemp, Andrew H., Gray, Marcus A., Silberstein, Richard B., Armstrong, Stuart M., Nathan, Pradeep J.

The serotonergic system is one of the major systems targeted in the pharmacological treatment of a wide range of mood disorders including depression; however, little is known about the...

Selective effects of simultaneous monoamine depletion on mood and emotional responsiveness (2004)

Hughes, Jay-Maree, Matrenza, Cathy, Kemp, Andrew H., Harrison, Ben J., Liley, David T. J., Nathan, Pradeep J.

Monoamines play a significant role in the regulation of mood and emotion. While the selective effects of serotonin and catecholamine depletion on mood have been described, the effects of simultaneous...

Effects of a combined extract of Gingko biloba and Bacopa monniera on cognitive function in healthy humans (2004)

Nathan, Pradeep J., Tanner, Sally, Lloyd, Jenny, Harrison, Ben, Curran, Leah, Oliver, Chris, ...

Extracts of Ginkgo biloba and Bacopa monniera have been shown to produce positive effects on cognitive function in healthy subjects. While the exact mechanisms are not known, it has been suggested...

Simultaneous depletion of serotonin and catecholamines impairs sustained attention in healthy female subjects without affecting learning and memory (2004)

Matrenza, Cathy, Hughes, Jay-Maree, Kemp, Andrew H., Wesnes, Keith, Harrison, Ben J., Nathan, Pradeep J.

Monoamine neurotransmitters, serotonin, noradrenaline and dopamine modulate many important cognitive processes such as attention, learning and memory. While the selective effects of serotonin and...

Gender differences in the cortical electrophysiological processing of visual emotional stimuli (2004)

Kemp, Andrew H., Silberstein, Richard B., Armstrong, Stuart M., Nathan, Pradeep J.

The processing of visual emotional stimuli has been investigated previously; however, gender differences in the processing of emotional stimuli remain to be clarified. The aim of the current study...

Augmentation of serotonin enhances pleasant and suppresses unpleasant cortical electrophysiological responses to visual emotional stimuli in humans (2004)

Kemp, Andrew H., Gray, Marcus A., Silberstein, Richard B., Armstrong, Stuart M., Nathan, Pradeep J.

The serotonergic system is one of the major systems targeted in the pharmacological treatment of a wide range of mood disorders including depression; however, little is known about the...

Selective effects of simultaneous monoamine depletion on mood and emotional responsiveness (2004)

Hughes, Jay-Maree, Matrenza, Cathy, Kemp, Andrew H., Harrison, Ben J., Liley, David T. J., Nathan, Pradeep J.

Monoamines play a significant role in the regulation of mood and emotion. While the selective effects of serotonin and catecholamine depletion on mood have been described, the effects of simultaneous...

Evidence for synergistic modulation of early information processing by nicotinic and muscarinic receptors in humans (2004)

Erskine, Fiona F., Ellis, J. R., Ellis, Kathryn A., Stuber, E., Hogan, K., Miller, V., ...

Impairments in early information processing are a hallmark feature of diverse neuropsychiatric disorders including schizophrenia and Alzheimer's disease (AD). Several lines of evidence implicate a...

The acute effects of L-theanine in comparison with alprazolam on anticipatory anxiety in humans (2004)

Liu, Kirsty, Gray, Marcus A., Oliver, Chris, Liley, David T. J., Harrison, Ben J., Bartholomeusz, Cali F., ...

L-Theanine (-glutamylethylamide) is one of the predominant amino acids ordinarily found in green tea, and historically has been used as a relaxing agent. The current study examined the acute effects...

Acute augmentation of serotonin suppresses cardiovascular responses to emotional valence (2004)

Kemp, Andrew H., Nathan, Pradeep J.

A key component in visceral reactivity to emotional states is heart rate (HR), however little is known about how HR response to emotional stimuli is modulated by neurochemicals. The present study...

Simultaneous depletion of tryptophan, tyrosine and phenylalanine as an experimental method to probe brain monoamine function in humans (2004)

Nathan, Pradeep J., Hughes, Jay-Maree, McInerney, Bernie, Harrison, Ben J.

Brain monoamines are important regulators of affective and cognitive processes and are involved in the aetiology of a number of psychiatric disorders. While methods to probe serotonin and...

Neural correlates of internally-generated disgust via autobiographical recall : a functional magnetic resonance imaging investigation (2004)

Fitzgerald, Daniel A., Posse, Stefan, Moore, Gregory J., Tancer, Manual E., Nathan, Pradeep J., Phan, K. Luan

Converging lines of evidence suggest the involvement of the insula and basal ganglia in the processing of disgust, an important primary emotion that guides the avoidance of potential physical...

Selective effects of acute serotonin and catecholamine depletion on memory in healthy women (2004)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Burrows, Graham D., Wesnes, Keith, Nathan, Pradeep J.

There is converging evidence that brain serotonin and dopamine may selectively modulate learning and memory in humans. However, this has not been directly demonstrated. In the current study, we used...

Selective effects of acute serotonin and catecholamine depletion on memory in healthy women (2004)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Burrows, Graham D., Wesnes, Keith, Nathan, Pradeep J.

There is converging evidence that brain serotonin and dopamine may selectively modulate learning and memory in humans. However, this has not been directly demonstrated. In the current study, we used...

Simultaneous depletion of serotonin and catecholamines impairs sustained attention in healthy female subjects without affecting learning and memory (2004)

Matrenza, Cathy, Hughes, Jay-Maree, Kemp, Andrew H., Wesnes, Keith, Harrison, Ben J., Nathan, Pradeep J.

Monoamine neurotransmitters, serotonin, noradrenaline and dopamine modulate many important cognitive processes such as attention, learning and memory. While the selective effects of serotonin and...

Gender differences in the cortical electrophysiological processing of visual emotional stimuli (2004)

Kemp, Andrew H., Silberstein, Richard B., Armstrong, Stuart M., Nathan, Pradeep J.

The processing of visual emotional stimuli has been investigated previously; however, gender differences in the processing of emotional stimuli remain to be clarified. The aim of the current study...

Augmentation of serotonin enhances pleasant and suppresses unpleasant cortical electrophysiological responses to visual emotional stimuli in humans (2004)

Kemp, Andrew H., Gray, Marcus A., Silberstein, Richard B., Armstrong, Stuart M., Nathan, Pradeep J.

The serotonergic system is one of the major systems targeted in the pharmacological treatment of a wide range of mood disorders including depression; however, little is known about the...

Selective effects of simultaneous monoamine depletion on mood and emotional responsiveness (2004)

Hughes, Jay-Maree, Matrenza, Cathy, Kemp, Andrew H., Harrison, Ben J., Liley, David T. J., Nathan, Pradeep J.

Monoamines play a significant role in the regulation of mood and emotion. While the selective effects of serotonin and catecholamine depletion on mood have been described, the effects of simultaneous...

Evidence for synergistic modulation of early information processing by nicotinic and muscarinic receptors in humans (2004)

Erskine, Fiona F., Ellis, J. R., Ellis, Kathryn A., Stuber, E., Hogan, K., Miller, V., ...

Impairments in early information processing are a hallmark feature of diverse neuropsychiatric disorders including schizophrenia and Alzheimer's disease (AD). Several lines of evidence implicate a...

The acute effects of L-theanine in comparison with alprazolam on anticipatory anxiety in humans (2004)

Liu, Kirsty, Gray, Marcus A., Oliver, Chris, Liley, David T. J., Harrison, Ben J., Bartholomeusz, Cali F., ...

L-Theanine (-glutamylethylamide) is one of the predominant amino acids ordinarily found in green tea, and historically has been used as a relaxing agent. The current study examined the acute effects...

Acute augmentation of serotonin suppresses cardiovascular responses to emotional valence (2004)

Kemp, Andrew H., Nathan, Pradeep J.

A key component in visceral reactivity to emotional states is heart rate (HR), however little is known about how HR response to emotional stimuli is modulated by neurochemicals. The present study...

Simultaneous depletion of tryptophan, tyrosine and phenylalanine as an experimental method to probe brain monoamine function in humans (2004)

Nathan, Pradeep J., Hughes, Jay-Maree, McInerney, Bernie, Harrison, Ben J.

Brain monoamines are important regulators of affective and cognitive processes and are involved in the aetiology of a number of psychiatric disorders. While methods to probe serotonin and...

Effects of a combined extract of Gingko biloba and Bacopa monniera on cognitive function in healthy humans (2004)

Nathan, Pradeep J., Tanner, Sally, Lloyd, Jenny, Harrison, Ben, Curran, Leah, Oliver, Chris, ...

Extracts of Ginkgo biloba and Bacopa monniera have been shown to produce positive effects on cognitive function in healthy subjects. While the exact mechanisms are not known, it has been suggested...

Neural correlates of internally-generated disgust via autobiographical recall : a functional magnetic resonance imaging investigation (2004)

Fitzgerald, Daniel A., Posse, Stefan, Moore, Gregory J., Tancer, Manual E., Nathan, Pradeep J., Phan, K. Luan

Converging lines of evidence suggest the involvement of the insula and basal ganglia in the processing of disgust, an important primary emotion that guides the avoidance of potential physical...

Selective effects of acute serotonin and catecholamine depletion on memory in healthy women (2004)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Burrows, Graham D., Wesnes, Keith, Nathan, Pradeep J.

There is converging evidence that brain serotonin and dopamine may selectively modulate learning and memory in humans. However, this has not been directly demonstrated. In the current study, we used...

Simultaneous depletion of serotonin and catecholamines impairs sustained attention in healthy female subjects without affecting learning and memory (2004)

Matrenza, Cathy, Hughes, Jay-Maree, Kemp, Andrew H., Wesnes, Keith, Harrison, Ben J., Nathan, Pradeep J.

Monoamine neurotransmitters, serotonin, noradrenaline and dopamine modulate many important cognitive processes such as attention, learning and memory. While the selective effects of serotonin and...

Gender differences in the cortical electrophysiological processing of visual emotional stimuli (2004)

Kemp, Andrew H., Silberstein, Richard B., Armstrong, Stuart M., Nathan, Pradeep J.

The processing of visual emotional stimuli has been investigated previously; however, gender differences in the processing of emotional stimuli remain to be clarified. The aim of the current study...

Cortical neurophysiology of anticipatory anxiety: an investigation utilizing steady state probe topography (SSPT) (2003)

Gray, Marcus A., Kemp, Andrew H., Silberstein, Richard B., Nathan, Pradeep J.

The precise role of the cortex in human anxiety is not well characterised. Previous imaging research among healthy controls has reported alterations in regional cerebral blood flow (rCBF) within the...

The modulatory effects of dopamine D1 and D2 receptor function on object working memory in humans (2003)

Bartholomeusz, Cali F., Box, Georgia A., Van Rooy, Cindy, Nathan, Pradeep J.

The role of dopamine D1 and D2 receptors in modulating object working memory in humans is poorly understood. The current study was designed to investigate the effects of D1 and D2 receptor modulation...

Drug-induced modification of the system properties associated with spontaneous human electroencephalographic activity (2003)

Liley, David T. J., Cadusch, Peter J., Gray, Marcus A., Nathan, Pradeep J.

The benzodiazepine (BZ) class of minor tranquilizers are important modulators of the gamma-amino butyric acid (GABAA)/BZ receptor complex that are well known to affect the spectral properties of...

Cortical neurophysiology of anticipatory anxiety: an investigation utilizing steady state probe topography (SSPT) (2003)

Gray, Marcus A., Kemp, Andrew H., Silberstein, Richard B., Nathan, Pradeep J.

The precise role of the cortex in human anxiety is not well characterised. Previous imaging research among healthy controls has reported alterations in regional cerebral blood flow (rCBF) within the...

The modulatory effects of dopamine D1 and D2 receptor function on object working memory in humans (2003)

Bartholomeusz, Cali F., Box, Georgia A., Van Rooy, Cindy, Nathan, Pradeep J.

The role of dopamine D1 and D2 receptors in modulating object working memory in humans is poorly understood. The current study was designed to investigate the effects of D1 and D2 receptor modulation...

Drug-induced modification of the system properties associated with spontaneous human electroencephalographic activity (2003)

Liley, David T. J., Cadusch, Peter J., Gray, Marcus A., Nathan, Pradeep J.

The benzodiazepine (BZ) class of minor tranquilizers are important modulators of the gamma-amino butyric acid (GABAA)/BZ receptor complex that are well known to affect the spectral properties of...

The modulatory effects of dopamine D1 and D2 receptor function on object working memory in humans (2003)

Bartholomeusz, Cali F., Box, Georgia A., Van Rooy, Cindy, Nathan, Pradeep J.

The role of dopamine D1 and D2 receptors in modulating object working memory in humans is poorly understood. The current study was designed to investigate the effects of D1 and D2 receptor modulation...

Drug-induced modification of the system properties associated with spontaneous human electroencephalographic activity (2003)

Liley, David T. J., Cadusch, Peter J., Gray, Marcus A., Nathan, Pradeep J.

The benzodiazepine (BZ) class of minor tranquilizers are important modulators of the gamma-amino butyric acid (GABAA)/BZ receptor complex that are well known to affect the spectral properties of...

Cortical neurophysiology of anticipatory anxiety: an investigation utilizing steady state probe topography (SSPT) (2003)

Gray, Marcus A., Kemp, Andrew H., Silberstein, Richard B., Nathan, Pradeep J.

The precise role of the cortex in human anxiety is not well characterised. Previous imaging research among healthy controls has reported alterations in regional cerebral blood flow (rCBF) within the...

Cortical neurophysiology of anticipatory anxiety: an investigation utilizing steady state probe topography (SSPT) (2003)

Gray, Marcus A., Kemp, Andrew H., Silberstein, Richard B., Nathan, Pradeep J.

The precise role of the cortex in human anxiety is not well characterised. Previous imaging research among healthy controls has reported alterations in regional cerebral blood flow (rCBF) within the...

The modulatory effects of dopamine D1 and D2 receptor function on object working memory in humans (2003)

Bartholomeusz, Cali F., Box, Georgia A., Van Rooy, Cindy, Nathan, Pradeep J.

The role of dopamine D1 and D2 receptors in modulating object working memory in humans is poorly understood. The current study was designed to investigate the effects of D1 and D2 receptor modulation...

Drug-induced modification of the system properties associated with spontaneous human electroencephalographic activity (2003)

Liley, David T. J., Cadusch, Peter J., Gray, Marcus A., Nathan, Pradeep J.

The benzodiazepine (BZ) class of minor tranquilizers are important modulators of the gamma-amino butyric acid (GABAA)/BZ receptor complex that are well known to affect the spectral properties of...

A review of the status of western herbal medicine in Australia (2002)

Wohlmuth, Hans, Oliver, Chris, Nathan, Pradeep J

Western herbal medicine is the most widely used form of herbal medicine in Australia although Ayurvedic and Chinese herbal medicines are becoming better known. The agricultural production and...

Effects of serotonin and catecholamine depletion on interlukin-6 activation and mood in human volunteers (2002)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Nathan, Pradeep J.

There is increasing evidence that depression and related neurotic illnesses are associated with alterations in immune function that may contribute to their pathogenesis. For example, clinical and...

The acute nootropic effects of Ginko biloba in healthy older human subjects: a preliminary investigation (2002)

Nathan, Pradeep J., Ricketts, Emily, Wesnes, Keith, Mrazek, Ludek, Greville, Warick, Stough, Con, ...

Ginkgo biloba has been shown to have chronic memory enhancing effects in healthy subjects and patients with dementia. There is limited research on the acute nootropic effects of Ginkgo biloba in...

Steady-state visually evoked potential topography during processing of emotional valence in healthy subjects (2002)

Kemp, Andrew H., Gray, Marcus A., Eide, Andrew H., Silbertstein, Richard B., Nathan, Pradeep J.

The International Affective Picture System (IAPS) is increasingly used in brain imaging studies to examine emotional processes. This task allows valence and arousal content to be systematically...

Brain monoamines and early visual information-processing speed (2002)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Nathan, Pradeep J.

Visual inspection time (IT) is a measure of information-processing speed, which correlates reliably with psychometric intelligence. Pharmacological research into IT indicates that manipulation of the...

Neurophysiology and psychopharmacology of anticipatory anxiety (2002)

Gray, Marcus A., Kemp, Andrew H., Silberstein, Richard B., Nathan, Pradeep J.

Anticipatory anxiety (AA) is one of the most basic components of anxiety. Research has highlighted the importance of the anterior temporal and prefrontal cortices during periods of AA within healthy...

A review of the status of Western herbal medicine in Australia (2002)

Nathan, Pradeep J., Oliver, Chris, Wohlmuth, Hans

Western herbal medicine is the most widely used form of herbal medicine in Australia although Ayurvedic and Chinese herbal medicines are becoming better known. The agricultural production and...

Effects of serotonin and catecholamine depletion on interlukin-6 activation and mood in human volunteers (2002)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Nathan, Pradeep J.

There is increasing evidence that depression and related neurotic illnesses are associated with alterations in immune function that may contribute to their pathogenesis. For example, clinical and...

The acute nootropic effects of Ginko biloba in healthy older human subjects: a preliminary investigation (2002)

Nathan, Pradeep J., Ricketts, Emily, Wesnes, Keith, Mrazek, Ludek, Greville, Warick, Stough, Con

Ginkgo biloba has been shown to have chronic memory enhancing effects in healthy subjects and patients with dementia. There is limited research on the acute nootropic effects of Ginkgo biloba in...

Steady-state visually evoked potential topography during processing of emotional valence in healthy subjects (2002)

Kemp, Andrew H., Gray, Marcus A., Eide, Andrew H., Silberstein, Richard B., Nathan, Pradeep J.

The International Affective Picture System (IAPS) is increasingly used in brain imaging studies to examine emotional processes. This task allows valence and arousal content to be systematically...

Brain monoamines and early visual information-processing speed (2002)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Nathan, Pradeep J.

Visual inspection time (IT) is a measure of information-processing speed, which correlates reliably with psychometric intelligence. Pharmacological research into IT indicates that manipulation of the...

Neurophysiology and psychopharmacology of anticipatory anxiety (2002)

Gray, Marcus A., Kemp, Andrew H., Silberstein, Richard B., Nathan, Pradeep J.

Anticipatory anxiety (AA) is one of the most basic components of anxiety. Research has highlighted the importance of the anterior temporal and prefrontal cortices during periods of AA within healthy...

A review of the status of Western herbal medicine in Australia (2002)

Nathan, Pradeep J., Oliver, Chris, Wohlmuth, Hans

Western herbal medicine is the most widely used form of herbal medicine in Australia although Ayurvedic and Chinese herbal medicines are becoming better known. The agricultural production and...

Effects of serotonin and catecholamine depletion on interlukin-6 activation and mood in human volunteers (2002)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Nathan, Pradeep J.

There is increasing evidence that depression and related neurotic illnesses are associated with alterations in immune function that may contribute to their pathogenesis. For example, clinical and...

The acute nootropic effects of Ginko biloba in healthy older human subjects: a preliminary investigation (2002)

Nathan, Pradeep J., Ricketts, Emily, Wesnes, Keith, Mrazek, Ludek, Greville, Warick, Stough, Con

Ginkgo biloba has been shown to have chronic memory enhancing effects in healthy subjects and patients with dementia. There is limited research on the acute nootropic effects of Ginkgo biloba in...

Steady-state visually evoked potential topography during processing of emotional valence in healthy subjects (2002)

Kemp, Andrew H., Gray, Marcus A., Eide, Andrew H., Silbertstein, Richard B., Nathan, Pradeep J.

The International Affective Picture System (IAPS) is increasingly used in brain imaging studies to examine emotional processes. This task allows valence and arousal content to be systematically...

Brain monoamines and early visual information-processing speed (2002)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Nathan, Pradeep J.

Visual inspection time (IT) is a measure of information-processing speed, which correlates reliably with psychometric intelligence. Pharmacological research into IT indicates that manipulation of the...

Neurophysiology and psychopharmacology of anticipatory anxiety (2002)

Gray, Marcus A., Kemp, Andrew H., Silberstein, Richard B., Nathan, Pradeep J.

Anticipatory anxiety (AA) is one of the most basic components of anxiety. Research has highlighted the importance of the anterior temporal and prefrontal cortices during periods of AA within healthy...

A review of the status of Western herbal medicine in Australia (2002)

Nathan, Pradeep J., Oliver, Chris, Wohlmuth, Hans

Western herbal medicine is the most widely used form of herbal medicine in Australia although Ayurvedic and Chinese herbal medicines are becoming better known. The agricultural production and...

The acute nootropic effects of Ginko biloba in healthy older human subjects: a preliminary investigation (2002)

Nathan, Pradeep J., Ricketts, Emily, Wesnes, Keith, Mrazek, Ludek, Greville, Warick, Stough, Con

Ginkgo biloba has been shown to have chronic memory enhancing effects in healthy subjects and patients with dementia. There is limited research on the acute nootropic effects of Ginkgo biloba in...

Effects of serotonin and catecholamine depletion on interlukin-6 activation and mood in human volunteers (2002)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Nathan, Pradeep J.

There is increasing evidence that depression and related neurotic illnesses are associated with alterations in immune function that may contribute to their pathogenesis. For example, clinical and...

Steady-state visually evoked potential topography during processing of emotional valence in healthy subjects (2002)

Kemp, Andrew H., Gray, Marcus A., Eide, Andrew H., Silbertstein, Richard B., Nathan, Pradeep J.

The International Affective Picture System (IAPS) is increasingly used in brain imaging studies to examine emotional processes. This task allows valence and arousal content to be systematically...

Brain monoamines and early visual information-processing speed (2002)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Nathan, Pradeep J.

Visual inspection time (IT) is a measure of information-processing speed, which correlates reliably with psychometric intelligence. Pharmacological research into IT indicates that manipulation of the...

Neurophysiology and psychopharmacology of anticipatory anxiety (2002)

Gray, Marcus A., Kemp, Andrew H., Silberstein, Richard B., Nathan, Pradeep J.

Anticipatory anxiety (AA) is one of the most basic components of anxiety. Research has highlighted the importance of the anterior temporal and prefrontal cortices during periods of AA within healthy...

A review of the status of western herbal medicine in Australia (2002)

Wohlmuth, Hans, Oliver, Chris, Nathan, Pradeep J

Western herbal medicine is the most widely used form of herbal medicine in Australia although Ayurvedic and Chinese herbal medicines are becoming better known. The agricultural production and...

Effects of serotonin and catecholamine depletion on interlukin-6 activation and mood in human volunteers (2002)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Nathan, Pradeep J.

There is increasing evidence that depression and related neurotic illnesses are associated with alterations in immune function that may contribute to their pathogenesis. For example, clinical and...

The acute nootropic effects of Ginko biloba in healthy older human subjects: a preliminary investigation (2002)

Nathan, Pradeep J., Ricketts, Emily, Wesnes, Keith, Mrazek, Ludek, Greville, Warick, Stough, Con

Ginkgo biloba has been shown to have chronic memory enhancing effects in healthy subjects and patients with dementia. There is limited research on the acute nootropic effects of Ginkgo biloba in...

A review of the status of Western herbal medicine in Australia (2002)

Nathan, Pradeep J., Oliver, Chris, Wohlmuth, Hans

Western herbal medicine is the most widely used form of herbal medicine in Australia although Ayurvedic and Chinese herbal medicines are becoming better known. The agricultural production and...

Brain monoamines and early visual information-processing speed (2002)

Harrison, Ben J., Olver, James S., Norman, Trevor R., Nathan, Pradeep J.

Visual inspection time (IT) is a measure of information-processing speed, which correlates reliably with psychometric intelligence. Pharmacological research into IT indicates that manipulation of the...

Steady-state visually evoked potential topography during processing of emotional valence in healthy subjects (2002)

Kemp, Andrew H., Gray, Marcus A., Eide, Andrew H., Silberstein, Richard B., Nathan, Pradeep J.

The International Affective Picture System (IAPS) is increasingly used in brain imaging studies to examine emotional processes. This task allows valence and arousal content to be systematically...

Neurophysiology and psychopharmacology of anticipatory anxiety (2002)

Gray, Marcus A., Kemp, Andrew H., Silberstein, Richard B., Nathan, Pradeep J.

Anticipatory anxiety (AA) is one of the most basic components of anxiety. Research has highlighted the importance of the anterior temporal and prefrontal cortices during periods of AA within healthy...

A review of the status of western herbal medicine in Australia (2002)

Wohlmuth, Hans, Oliver, Chris, Nathan, Pradeep J

Western herbal medicine is the most widely used form of herbal medicine in Australia although Ayurvedic and Chinese herbal medicines are becoming better known. The agricultural production and...

An investigation into the acute nootropic effects of hypericum perforatum L. (St John's Wort) in healthy human volunteers (2001)

Ellis, Kathryn A., Stough, Con, Vitetta, Luis, Heinrich, K., Nathan, Pradeep J.

Hypericum perforatum L. (St. John's Wort) is a complex herb that has been used for centuries for its putative medicinal properties, and has current therapeutic relevance as a treatment of mild to...

Neuropsychological changes after 30-day Ginkgo Biloba administration in healthy participants (2001)

Stough, Con, Clarke, J., Lloyd, Jenny, Nathan, Pradeep J.

Ginkgo biloba extract (EGb) from the world's oldest living tree has been reputed to ameliorate cognitive decline in the elderly and slow cognitive deterioration in patients with dementia of the...

The neurophysiology of anticipatory anxiety (2001)

Nathan, Pradeep J., Gray, Marcus A., Silbertstein, Richard B.

The precise role of the cortex in human anxiety is not well characterized. The present study aimed to examine the cortical steady state visual evoked potential (SSVEP) changes associated with...

Inspection time : a neuropsychophysiological test for measuring the functional integrity of the cholinergic system (2001)

Nathan, Pradeep J., Stough, Con

Inspection time (IT) is a measure of the speed of early information processing, demonstrating reliable correlation with psychometric intelligence. We now provide evidence that it may serve as a...

The acute effects of an extract of Bacopa monniera (Brahmi) on cognitive function in healthy normal subjects (2001)

Nathan, Pradeep J., Stough, Con, Downey, L., Clarke, J., Lloyd, J., Hutchison, Chris W., ...

The Ayurvedic medicine Bacopa monniera (Brahmi) has been shown to exert cognitive enhancing effects in animals. The current study examined the acute effects of an extract of Bacopa monniera on...

A preliminary investigation on the acute pharmacodynamic effects of hypericum on cognitive and psychomotor performance (2001)

Timoshanko, A., Nathan, Pradeep J., Vitetta, Luis

Research has indicated that the herb St John's Wort (Hypericum perforatum) has comparable efficacy to conventional antidepressants in the treatment of depression. Although clinical studies have...

Inspection time : a neuropsychophysiological test for measuring the functional integrity of the cholinergic system (2001)

Nathan, Pradeep J., Stough, Con

Inspection time (IT) is a measure of the speed of early information processing, demonstrating reliable correlation with psychometric intelligence. We now provide evidence that it may serve as a...

Cholinergic modulation of speed of early information processing: the effect of donepezil on inspection time (2001)

Hutchison, Chris W., Nathan, Pradeep J., Mrazek, Ludek, Stough, Con

Rationale: Selective cholinergic receptor agonists and antagonists have been shown to modulate inspection time, a measure of speed of early information processing. Objective: The present study aimed...

The acute effects of an extract of Bacopa monniera (Brahmi) on cognitive function in healthy normal subjects (2001)

Nathan, Pradeep J., Stough, Con, Downey, L., Clarke, J., Lloyd, J., Hutchison, Chris W.

The Ayurvedic medicine Bacopa monniera (Brahmi) has been shown to exert cognitive enhancing effects in animals. The current study examined the acute effects of an extract of Bacopa monniera on...

The pharmacology of human working memory (2001)

Ellis, Kathryn A., Nathan, Pradeep J.

Experimental studies conducted primarily on non-human primates have begun to address the anatomical and neurochemical correlates of working memory. There is an associated growing body of experimental...

An investigation into the acute nootropic effects of hypericum perforatum L. (St John's Wort) in healthy human volunteers (2001)

Ellis, Kathryn A., Stough, Con, Vitetta, Luis, Heinrich, K., Nathan, Pradeep J.

Hypericum perforatum L. (St. John's Wort) is a complex herb that has been used for centuries for its putative medicinal properties, and has current therapeutic relevance as a treatment of mild to...

Neuropsychological changes after 30-day Ginkgo Biloba administration in healthy participants (2001)

Stough, Con, Clarke, J., Lloyd, Jenny, Nathan, Pradeep J.

Ginkgo biloba extract (EGb) from the world's oldest living tree has been reputed to ameliorate cognitive decline in the elderly and slow cognitive deterioration in patients with dementia of the...

Examining neurochemical determinants of inspection time development of a biological model (2001)

Stough, Con, Thompson, James C., Bates, Timothy C., Nathan, Pradeep J.

Inspection time (IT), an information-processing correlate of psychometric intelligence, has been extensively studied. Previous research has shown that IT is a reliable correlate of psychometric...

The neurophysiology of anticipatory anxiety (2001)

Nathan, Pradeep J., Gray, Marcus A., Silberstein, Richard B.

The precise role of the cortex in human anxiety is not well characterized. The present study aimed to examine the cortical steady state visual evoked potential (SSVEP) changes associated with...

A preliminary investigation on the acute pharmacodynamic effects of hypericum on cognitive and psychomotor performance (2001)

Timoshanko, A., Nathan, Pradeep J., Vitetta, Luis

Research has indicated that the herb St John's Wort (Hypericum perforatum) has comparable efficacy to conventional antidepressants in the treatment of depression. Although clinical studies have...

Inspection time : a neuropsychophysiological test for measuring the functional integrity of the cholinergic system (2001)

Nathan, Pradeep J., Stough, Con

Inspection time (IT) is a measure of the speed of early information processing, demonstrating reliable correlation with psychometric intelligence. We now provide evidence that it may serve as a...

The acute effects of an extract of Bacopa monniera (Brahmi) on cognitive function in healthy normal subjects (2001)

Nathan, Pradeep J., Stough, Con, Downey, L., Clarke, J., Lloyd, J., Hutchison, Chris W.

The Ayurvedic medicine Bacopa monniera (Brahmi) has been shown to exert cognitive enhancing effects in animals. The current study examined the acute effects of an extract of Bacopa monniera on...

The pharmacology of human working memory (2001)

Ellis, Kathryn A., Nathan, Pradeep J.

Experimental studies conducted primarily on non-human primates have begun to address the anatomical and neurochemical correlates of working memory. There is an associated growing body of experimental...

An investigation into the acute nootropic effects of hypericum perforatum L. (St John's Wort) in healthy human volunteers (2001)

Ellis, Kathryn A., Stough, Con, Vitetta, Luis, Heinrich, K., Nathan, Pradeep J.

Hypericum perforatum L. (St. John's Wort) is a complex herb that has been used for centuries for its putative medicinal properties, and has current therapeutic relevance as a treatment of mild to...

Neuropsychological changes after 30-day Ginkgo Biloba administration in healthy participants (2001)

Stough, Con, Clarke, J., Lloyd, Jenny, Nathan, Pradeep J.

Ginkgo biloba extract (EGb) from the world's oldest living tree has been reputed to ameliorate cognitive decline in the elderly and slow cognitive deterioration in patients with dementia of the...

Examining neurochemical determinants of inspection time development of a biological model (2001)

Stough, Con, Thompson, James C., Bates, Timothy C., Nathan, Pradeep J.

Inspection time (IT), an information-processing correlate of psychometric intelligence, has been extensively studied. Previous research has shown that IT is a reliable correlate of psychometric...

The neurophysiology of anticipatory anxiety (2001)

Nathan, Pradeep J., Gray, Marcus A., Silbertstein, Richard B.

The precise role of the cortex in human anxiety is not well characterized. The present study aimed to examine the cortical steady state visual evoked potential (SSVEP) changes associated with...

The pharmacology of human working memory (2001)

Ellis, Kathryn A., Nathan, Pradeep J.

Experimental studies conducted primarily on non-human primates have begun to address the anatomical and neurochemical correlates of working memory. There is an associated growing body of experimental...

An investigation into the acute nootropic effects of hypericum perforatum L. (St John's Wort) in healthy human volunteers (2001)

Ellis, Kathryn A., Stough, Con, Vitetta, Luis, Heinrich, K., Nathan, Pradeep J.

Hypericum perforatum L. (St. John's Wort) is a complex herb that has been used for centuries for its putative medicinal properties, and has current therapeutic relevance as a treatment of mild to...

Neuropsychological changes after 30-day Ginkgo Biloba administration in healthy participants (2001)

Stough, Con, Clarke, J., Lloyd, Jenny, Nathan, Pradeep J.

Ginkgo biloba extract (EGb) from the world's oldest living tree has been reputed to ameliorate cognitive decline in the elderly and slow cognitive deterioration in patients with dementia of the...

Examining neurochemical determinants of inspection time development of a biological model (2001)

Stough, Con, Thompson, James C., Bates, Timothy C., Nathan, Pradeep J.

Inspection time (IT), an information-processing correlate of psychometric intelligence, has been extensively studied. Previous research has shown that IT is a reliable correlate of psychometric...

The neurophysiology of anticipatory anxiety (2001)

Nathan, Pradeep J., Gray, Marcus A., Silbertstein, Richard B.

The precise role of the cortex in human anxiety is not well characterized. The present study aimed to examine the cortical steady state visual evoked potential (SSVEP) changes associated with...

A preliminary investigation on the acute pharmacodynamic effects of hypericum on cognitive and psychomotor performance (2001)

Timoshanko, A., Nathan, Pradeep J., Vitetta, Luis

Research has indicated that the herb St John's Wort (Hypericum perforatum) has comparable efficacy to conventional antidepressants in the treatment of depression. Although clinical studies have...

Inspection time : a neuropsychophysiological test for measuring the functional integrity of the cholinergic system (2001)

Nathan, Pradeep J., Stough, Con

Inspection time (IT) is a measure of the speed of early information processing, demonstrating reliable correlation with psychometric intelligence. We now provide evidence that it may serve as a...

The acute effects of an extract of Bacopa monniera (Brahmi) on cognitive function in healthy normal subjects (2001)

Nathan, Pradeep J., Stough, Con, Downey, L., Clarke, J., Lloyd, J., Hutchison, Chris W.

The Ayurvedic medicine Bacopa monniera (Brahmi) has been shown to exert cognitive enhancing effects in animals. The current study examined the acute effects of an extract of Bacopa monniera on...

Neuropsychological changes after 30-day Ginkgo Biloba administration in healthy participants (2001)

Stough, Con, Clarke, J., Lloyd, Jenny, Nathan, Pradeep J.

Ginkgo biloba extract (EGb) from the world's oldest living tree has been reputed to ameliorate cognitive decline in the elderly and slow cognitive deterioration in patients with dementia of the...

Examining neurochemical determinants of inspection time development of a biological model (2001)

Stough, Con, Thompson, James C., Bates, Timothy C., Nathan, Pradeep J.

Inspection time (IT), an information-processing correlate of psychometric intelligence, has been extensively studied. Previous research has shown that IT is a reliable correlate of psychometric...

The pharmacology of human working memory (2001)

Ellis, Kathryn A., Nathan, Pradeep J.

Experimental studies conducted primarily on non-human primates have begun to address the anatomical and neurochemical correlates of working memory. There is an associated growing body of experimental...

An investigation into the acute nootropic effects of hypericum perforatum L. (St John's Wort) in healthy human volunteers (2001)

Ellis, Kathryn A., Stough, Con, Vitetta, Luis, Heinrich, K., Nathan, Pradeep J.

Hypericum perforatum L. (St. John's Wort) is a complex herb that has been used for centuries for its putative medicinal properties, and has current therapeutic relevance as a treatment of mild to...

The neurophysiology of anticipatory anxiety (2001)

Nathan, Pradeep J., Gray, Marcus A., Silberstein, Richard B.

The precise role of the cortex in human anxiety is not well characterized. The present study aimed to examine the cortical steady state visual evoked potential (SSVEP) changes associated with...

A preliminary investigation on the acute pharmacodynamic effects of hypericum on cognitive and psychomotor performance (2001)

Timoshanko, A., Nathan, Pradeep J., Vitetta, Luis

Research has indicated that the herb St John's Wort (Hypericum perforatum) has comparable efficacy to conventional antidepressants in the treatment of depression. Although clinical studies have...

Inspection time : a neuropsychophysiological test for measuring the functional integrity of the cholinergic system (2001)

Nathan, Pradeep J., Stough, Con

Inspection time (IT) is a measure of the speed of early information processing, demonstrating reliable correlation with psychometric intelligence. We now provide evidence that it may serve as a...

Cholinergic modulation of speed of early information processing: the effect of donepezil on inspection time (2001)

Hutchison, Chris W., Nathan, Pradeep J., Mrazek, Ludek, Stough, Con

Rationale: Selective cholinergic receptor agonists and antagonists have been shown to modulate inspection time, a measure of speed of early information processing. Objective: The present study aimed...

The acute effects of an extract of Bacopa monniera (Brahmi) on cognitive function in healthy normal subjects (2001)

Nathan, Pradeep J., Stough, Con, Downey, L., Clarke, J., Lloyd, J., Hutchison, Chris W.

The Ayurvedic medicine Bacopa monniera (Brahmi) has been shown to exert cognitive enhancing effects in animals. The current study examined the acute effects of an extract of Bacopa monniera on...

Serotonin, noradrenaline and cognitive function: a preliminary investigation of the acute pharmacodynamic effects of a serotonin versus a serotonin and noradrenaline reuptake inhibitor (2000)

Nathan, Pradeep J., Siteram, Geetha, Stough, Con, Silberstein, Richard B., Avni, Sali

Comparisons of the behavioural side-effect profiles of antidepressants that inhibit either serotonin or both serotonin and noradrenaline reuptake, may reveal differences in cognitive and psychomotor...

The effect of gender on the melatonin suppression by light : a dose response relationship (2000)

Nathan, Pradeep J., Wyndham, E. L., Burrows, Graham D., Norman, Trevor R.

It is well known that light is an inhibitor of pineal melatonin secretion in humans. However, the effect of gender on the melatonin suppression by dim and bright light is still controversial. The...

Effects of the nicotinic antagonist mecamylamine on inspection time (2000)

Thompson, James C., Stough, Con, Ames, David, Nathan, Pradeep J., Ritchie, Craig

RATIONALE: Several lines of evidence suggest that nicotinic acetylcholine receptors (nAchRs) are involved in speed of information processing, and inspection time appears to be particularly sensitive...

Effects of the nicotinic antagonist mecamylamine on inspection time (2000)

Thompson, James C., Stough, Con, Ames, David, Nathan, Pradeep J., Ritchie, Craig

RATIONALE: Several lines of evidence suggest that nicotinic acetylcholine receptors (nAchRs) are involved in speed of information processing, and inspection time appears to be particularly sensitive...

Volume transmission as a mechanism of time-dependent sensitization to antidepressant therapy (2000)

Nathan, Pradeep J.

Administration of certain drugs such as antidepressants have been shown to produce a phenomenon known as time-dependent sensitization, a process in which the acute effects of the drugs sensitize and...

Can the cognitive enhancing effects of Ginkgo biloba be explained by its pharmacology? (2000)

Nathan, Pradeep J.

Pre-clinical and clinical studies have shown that the extract of the leaves of Ginkgo biloba has modest therapeutic potential as a cognitive enhancing drug. The pharmacology of Ginkgo biloba is...

The effect of gender on the melatonin suppression by light : a dose response relationship (2000)

Nathan, Pradeep J., Wyndham, E. L., Burrows, Graham D., Norman, Trevor R.

It is well known that light is an inhibitor of pineal melatonin secretion in humans. However, the effect of gender on the melatonin suppression by dim and bright light is still controversial. The...

Serotonin, noradrenaline and cognitive function: a preliminary investigation of the acute pharmacodynamic effects of a serotonin versus a serotonin and noradrenaline reuptake inhibitor (2000)

Nathan, Pradeep J., Siteram, Geetha, Stough, Con, Silberstein, Richard B., Avni, Sali

Comparisons of the behavioural side-effect profiles of antidepressants that inhibit either serotonin or both serotonin and noradrenaline reuptake, may reveal differences in cognitive and psychomotor...

Effects of the nicotinic antagonist mecamylamine on inspection time (2000)

Thompson, James C., Stough, Con, Ames, David, Nathan, Pradeep J., Ritchie, Craig

RATIONALE: Several lines of evidence suggest that nicotinic acetylcholine receptors (nAchRs) are involved in speed of information processing, and inspection time appears to be particularly sensitive...

Volume transmission as a mechanism of time-dependent sensitization to antidepressant therapy (2000)

Nathan, Pradeep J.

Administration of certain drugs such as antidepressants have been shown to produce a phenomenon known as time-dependent sensitization, a process in which the acute effects of the drugs sensitize and...

Can the cognitive enhancing effects of Ginkgo biloba be explained by its pharmacology? (2000)

Nathan, Pradeep J.

Pre-clinical and clinical studies have shown that the extract of the leaves of Ginkgo biloba has modest therapeutic potential as a cognitive enhancing drug. The pharmacology of Ginkgo biloba is...

The effect of gender on the melatonin suppression by light : a dose response relationship (2000)

Nathan, Pradeep J., Wyndham, E. L., Burrows, Graham D., Norman, Trevor R.

It is well known that light is an inhibitor of pineal melatonin secretion in humans. However, the effect of gender on the melatonin suppression by dim and bright light is still controversial. The...

Serotonin, noradrenaline and cognitive function: a preliminary investigation of the acute pharmacodynamic effects of a serotonin versus a serotonin and noradrenaline reuptake inhibitor (2000)

Nathan, Pradeep J., Siteram, Geetha, Stough, Con, Silberstein, Richard B., Avni, Sali

Comparisons of the behavioural side-effect profiles of antidepressants that inhibit either serotonin or both serotonin and noradrenaline reuptake, may reveal differences in cognitive and psychomotor...

Serotonin, noradrenaline and cognitive function: a preliminary investigation of the acute pharmacodynamic effects of a serotonin versus a serotonin and noradrenaline reuptake inhibitor (2000)

Nathan, Pradeep J., Siteram, Geetha, Stough, Con, Silberstein, Richard B., Avni, Sali

Comparisons of the behavioural side-effect profiles of antidepressants that inhibit either serotonin or both serotonin and noradrenaline reuptake, may reveal differences in cognitive and psychomotor...

The effect of gender on the melatonin suppression by light : a dose response relationship (2000)

Nathan, Pradeep J., Wyndham, E. L., Burrows, Graham D., Norman, Trevor R.

It is well known that light is an inhibitor of pineal melatonin secretion in humans. However, the effect of gender on the melatonin suppression by dim and bright light is still controversial. The...

Volume transmission as a mechanism of time-dependent sensitization to antidepressant therapy (2000)

Nathan, Pradeep J.

Administration of certain drugs such as antidepressants have been shown to produce a phenomenon known as time-dependent sensitization, a process in which the acute effects of the drugs sensitize and...

Can the cognitive enhancing effects of Ginkgo biloba be explained by its pharmacology? (2000)

Nathan, Pradeep J.

Pre-clinical and clinical studies have shown that the extract of the leaves of Ginkgo biloba has modest therapeutic potential as a cognitive enhancing drug. The pharmacology of Ginkgo biloba is...

Effects of the nicotinic antagonist mecamylamine on inspection time (2000)

Thompson, James C., Stough, Con, Ames, David, Nathan, Pradeep J., Ritchie, Craig

RATIONALE: Several lines of evidence suggest that nicotinic acetylcholine receptors (nAchRs) are involved in speed of information processing, and inspection time appears to be particularly sensitive...

Serotonin, noradrenaline and cognitive function: a preliminary investigation of the acute pharmacodynamic effects of a serotonin versus a serotonin and noradrenaline reuptake inhibitor (2000)

Nathan, Pradeep J., Siteram, Geetha, Stough, Con, Silberstein, Richard B., Avni, Sali

Comparisons of the behavioural side-effect profiles of antidepressants that inhibit either serotonin or both serotonin and noradrenaline reuptake, may reveal differences in cognitive and psychomotor...

Volume transmission as a mechanism of time-dependent sensitization to antidepressant therapy (2000)

Nathan, Pradeep J.

Administration of certain drugs such as antidepressants have been shown to produce a phenomenon known as time-dependent sensitization, a process in which the acute effects of the drugs sensitize and...

Can the cognitive enhancing effects of Ginkgo biloba be explained by its pharmacology? (2000)

Nathan, Pradeep J.

Pre-clinical and clinical studies have shown that the extract of the leaves of Ginkgo biloba has modest therapeutic potential as a cognitive enhancing drug. The pharmacology of Ginkgo biloba is...

The effect of gender on the melatonin suppression by light : a dose response relationship (2000)

Nathan, Pradeep J., Wyndham, E. L., Burrows, Graham D., Norman, Trevor R.

It is well known that light is an inhibitor of pineal melatonin secretion in humans. However, the effect of gender on the melatonin suppression by dim and bright light is still controversial. The...

Effects of the nicotinic antagonist mecamylamine on inspection time (2000)

Thompson, James C., Stough, Con, Ames, David, Nathan, Pradeep J., Ritchie, Craig

RATIONALE: Several lines of evidence suggest that nicotinic acetylcholine receptors (nAchRs) are involved in speed of information processing, and inspection time appears to be particularly sensitive...

Melatonin sensitivity to dim white light in different seasons (1999)

Nathan, Pradeep J., Burrows, Graham D., Norman, Trevor R.

It is well known that the pineal hormone melatonin is suppressed by light. The melatonin suppression by dim light has also been suggested as a possible trait marker of bipolar disorder. However,...

The effect of age and pre-light melatonin concentration on the melatonin sensitivity to dim light (1999)

Nathan, Pradeep J., Burrows, Graham D., Norman, Trevor R.

The hormone melatonin is secreted at night from the pineal gland, with light being a potent inhibitor of its secretion. Age related decreases in plasma melatonin concentrations have indicated that...

Melatonin sensitivity to dim white light in different seasons (1999)

Nathan, Pradeep J., Burrows, Graham D., Norman, Trevor R.

It is well known that the pineal hormone melatonin is suppressed by light. The melatonin suppression by dim light has also been suggested as a possible trait marker of bipolar disorder. However,...

The effect of age and pre-light melatonin concentration on the melatonin sensitivity to dim light (1999)

Nathan, Pradeep J., Burrows, Graham D., Norman, Trevor R.

The hormone melatonin is secreted at night from the pineal gland, with light being a potent inhibitor of its secretion. Age related decreases in plasma melatonin concentrations have indicated that...

Subsensitive melatonin suppression by dim white light: possible biological marker of panic disorder (1998)

Nathan, Pradeep J., Burrows, Graham D., Norman, Trevor R.

Light is involved in providing entrainment of circadian rhythms and the suppression of the pineal hormone melatonin. In patients with affective disorders, there have been indications of circadian as...

Subsensitive melatonin suppression by dim white light: possible biological marker of panic disorder (1998)

Nathan, Pradeep J., Burrows, Graham D., Norman, Trevor R.

Light is involved in providing entrainment of circadian rhythms and the suppression of the pineal hormone melatonin. In patients with affective disorders, there have been indications of circadian as...

Amygdala–frontal connectivity during emotion regulation

Banks, Sarah J., Eddy, Kamryn T., Angstadt, Mike, Nathan, Pradeep J., Phan, K. Luan

Successful control of affect partly depends on the capacity to modulate negative emotional responses through the use of cognitive strategies (i.e., reappraisal). Recent studies suggest the...