Michael S. Fanselow

Inverse temporal contributions of the dorsal hippocampus and medial prefrontal cortex to the expression of long-term fear memories (2008)

Quinn, Jennifer J., Ma, Quang D., Tinsley, Matthew R., Koch, Christof, Fanselow, Michael S.

Retrograde amnesia following disruptions of hippocampal function is often temporally graded, with recent memories being more impaired. Evidence supports the existence of one or more neocortical...

Trace fear conditioning is enhanced in mice lacking the {delta} subunit of the GABAA receptor (2005)

Wiltgen, Brian J., Sanders, Matthew J., Ferguson, Carolyn, Homanics, Gregg E., Fanselow, Michael S.

The δ subunit of the GABAA receptor (GABAAR) is highly expressed in the dentate gyrus of the hippocampus. Genetic deletion of this subunit reduces synaptic and extrasynaptic inhibition and decreases...

Trace fear conditioning is enhanced in mice lacking the {delta} subunit of the GABAA receptor (2005)

Wiltgen, Brian J., Sanders, Matthew J., Ferguson, Carolyn, Homanics, Gregg E., Fanselow, Michael S.

The δ subunit of the GABAA receptor (GABAAR) is highly expressed in the dentate gyrus of the hippocampus. Genetic deletion of this subunit reduces synaptic and extrasynaptic inhibition and decreases...

Trace but not delay fear conditioning requires attention and the anterior cingulate cortex (2003)

Han, C. J., O'Tuathaigh, Colm M., Van Trigt, Laurent, Quinn, Jennifer J., Fanselow, Michael S., Mongeau, Raymond, ...

Higher cognitive functions such as attention have been difficult to model in genetically tractable organisms. In humans, attention-distracting stimuli interfere with trace but not delay conditioning,...

Scopolamine and Pavlovian fear conditioning in rats: dose-effect analysis (1999)

Anagnostaras, Stephan G., Maren, Stephen, Sage, Jennifer R., Goodrich, Stacy, Fanselow, Michael S.

Muscarinic-cholinergic antagonism produces learning and memory deficits in a wide variety of hippocampal-dependent tasks. Hippocampal lesions produce both acquisition deficits and retrograde amnesia...

Temporally graded retrograde amnesia of contextual fear after hippocampal damage in rats: within-subjects examination (1999)

Anagnostaras, Stephan G., Maren, Stephen, Fanselow, Michael S.

We have shown previously that electrolytic lesions of the dorsal hippocampus (DH) produce a severe deficit in contextual fear if made 1 d, but not 28 d, after fear conditioning (). As such, the...

Appetitive motivational states differ in their ability to augment aversive fear conditioning in rats (Rattus norvegicus) (1998)

Maren, Stephen, Fanselow, Michael S.

The present experiments compared the effects of 2 appetitive motivational states on the acquisition of Pavlovian fear conditioning in rats (Rattus norvegicus). In Experiment 1, rats were deprived of...

Immediate-early gene expression in the amygdala following footshock stress and contextual fear conditioning (1998)

Rosen, Jeffrey B., Fanselow, Michael S., Young, Stacey L., Sitcoske, Martin, Maren, Stephen

This study investigated the increase in expression in the amygdala of 2 immediate-early genes, c-fos and NGFI-A, following contextual fear conditioning. The immediate-shock freezing deficit paradigm...

Distinct regions of the periaqueductal gray are involved in the acquisition and expression of defensive responses (1998)

De Oca, Beatrice M., DeCola, Joseph P., Maren, Stephen, Fanselow, Michael S.

In fear conditioning, a rat is placed in a distinct environment and delivered footshock. The response to the footshock itself is called an activity burst and includes running, jumping, and...

Testicular hormones do not regulate sexually dimorphic Pavlovian fear conditioning or perforant-path long-term potentiation in adult male rats (1998)

Anagnostaras, Stephan G., Maren, Stephen, DeCola, Joseph P., Lane, Nathan I., Gale, Greg D., Schlinger, Barney A., ...

We recently reported that Pavlovian fear conditioning and hippocampal perforant-path long-term potentiation (LTP) are sexually dimorphic in rats. Males show greater contextual fear conditioning,...

Neurotoxic lesions of the dorsal hippocampus and Pavlovian fear conditioning in rats (1997)

Maren, Stephen, Aharonov, Gal, Fanselow, Michael S.

Electrolytic lesions of the dorsal hippocampus (DH) produce deficits in both the acquisition and expression of conditional fear to contextual stimuli in rats. To assess whether damage to DH neurons...

Selective enhancement of emotional, but not motor, learning in monoamine oxidase A-deficient mice (1997)

Kim, Jeansok J., Shih, Jean C., Chen, Kevin, Chen, Lu, Bao, Shaowen, Maren, Stephen, ...

Mice deficient in monoamine oxidase A (MAOA), an enzyme that metabolizes monoamines such as norepinephrine and serotonin, have elevated norepinephrine and serotonin levels in the frontal cortex,...

Electrolytic lesions of the fimbria/fornix, dorsal hippocampus, or entorhinal cortex produce anterograde deficits in contextual fear conditioning in rats (1997)

Maren, Stephen, Fanselow, Michael S.

Recent data indicate that dorsal hippocampal (DH) lesions disrupt Pavlovian fear conditioning to contextual cues in rats. In the present study, we examined the effects of electrolytic lesions of the...

N-methyl-D-aspartate receptors in the basolateral amygdala are required for both acquisition and expression of conditional fear in rats (1996)

Maren, Stephen, Aharonov, Gal, Stote, Deborah L., Fanselow, Michael S.

Three experiments examined the effects of intra-amygdaloid infusions of an N-methyl-D-aspartate (NMDA) receptor antagonist, D,L-2-amino-5-phosphonovalerate (APV), on contextual fear conditioning in...

Retrograde abolition of conditional fear after excitotoxic lesions in the basolateral amygdala of rats: absence of a temporal gradient (1996)

Maren, Stephen, Aharonov, Gal, Fanselow, Michael S.

The role of the basolateral amygdala (LA) in the acquisition and expression of Pavlovian fear conditioning was examined in 80 rats. Excitotoxic lesions were made in the BLA using N-methyl-D-aspartate...

Synaptic plasticity in the basolateral amygdala induced by hippocampal formation stimulation in vivo (1995)

Maren, Stephen, Fanselow, Michael S.

Several studies suggest that axonal projections from the hippocampal formation (HF) to the basolateral amygdala (BLA) play a role in Pavlovian fear conditioning to contextual conditional stimuli. We...

Scopolamine selectively disrupts the acquisition of contextual fear conditioning in rats (1995)

Anagnostaras, Stephan G., Maren, Stephen, Fanselow, Michael S.

Muscarinic cholinergic antagonism produces learning and memory deficits in a variety of hippocampal-dependent tasks. Hippocampal lesions produce both acquisition deficits and retrograde amnesia for...

Sex differences in hippocampal long-term potentiation (LTP) and Pavlovian fear conditioning in rats: positive correlation between LTP and contextual learning (1994)

Maren, Stephen, De Oca, Beatrice, Fanselow, Michael S.

Three experiments investigated sex differences in hippocampal long-term potentiation (LTP) and Pavlovian fear conditioning in rats. Experiment 1 revealed a robust sex difference in the magnitude of...

Water deprivation enhances fear conditioning to contextual, but not discrete, stimuli in rats (1994)

Maren, Stephen, DeCola, Joseph P., Fanselow, Michael S.

Water-deprived and nondeprived rats were fear conditioned with a discrete tone conditional stimulus (CS) and an aversive footshock unconditional stimulus (US). Twenty-four and 48 hr following...

Parallel augmentation of hippocampal long-term potentiation, theta rhythm, and contextual fear conditioning in water-deprived rats (1994)

Maren, Stephen, DeCola, Joseph P., Swain, Rodney A., Fanselow, Michael S., Thompson, Richard F.

The influence of water deprivation on hippocampal long-term potentiation (LTP), theta rhythm, and contextual fear conditioning in rats was examined. In Experiment 1, hippocampal EEG activity and...

Selective enhancement of emotional, but not motor, learning in monoamine oxidase A-deficient mice

Kim, Jeansok J., Shih, Jean C., Chen, Kevin, Chen, Lu, Bao, Shaowen, Maren, Stephen, ...

Mice deficient in monoamine oxidase A (MAOA), an enzyme that metabolizes monoamines such as norepinephrine and serotonin, have elevated norepinephrine and serotonin levels in the frontal cortex,...

Attenuated sensitivity to neuroactive steroids in γ-aminobutyrate type A receptor delta subunit knockout mice

Mihalek, Robert M., Banerjee, Pradeep K., Korpi, Esa R., Quinlan, Joseph J., Firestone, Leonard L., Mi, Zhi-Ping, ...

γ-Aminobutyric acid (GABA) type A receptors mediate fast inhibitory synaptic transmission and have been implicated in responses to sedative/hypnotic agents (including neuroactive steroids), anxiety,...

Mouse model of Sanfilippo syndrome type B produced by targeted disruption of the gene encoding α-N-acetylglucosaminidase

Li, Hong Hua, Yu, Wei-Hong, Rozengurt, Nora, Zhao, Hui-Zhi, Lyons, Karen M., Anagnostaras, Stephan, ...

The Sanfilippo syndrome type B is an autosomal recessive disorder caused by mutation in the gene (NAGLU) encoding α-N-acetylglucosaminidase, a lysosomal enzyme required for the stepwise degradation...

Trace but not delay fear conditioning requires attention and the anterior cingulate cortex

Han, C. J., O'Tuathaigh, Colm M., Van Trigt, Laurent, Quinn, Jennifer J., Fanselow, Michael S., Mongeau, Raymond, ...

Higher cognitive functions such as attention have been difficult to model in genetically tractable organisms. In humans, attention-distracting stimuli interfere with trace but not delay conditioning,...

Trace fear conditioning is enhanced in mice lacking the δ subunit of the GABAA receptor

Wiltgen, Brian J., Sanders, Matthew J., Ferguson, Carolyn, Homanics, Gregg E., Fanselow, Michael S.

The δ subunit of the GABAA receptor (GABAAR) is highly expressed in the dentate gyrus of the hippocampus. Genetic deletion of this subunit reduces synaptic and extrasynaptic inhibition and decreases...

Selective enhancement of emotional, but not motor, learning in monoamine oxidase A-deficient mice

Kim, Jeansok J., Shih, Jean C., Chen, Kevin, Chen, Lu, Bao, Shaowen, Maren, Stephen, ...

Mice deficient in monoamine oxidase A (MAOA), an enzyme that metabolizes monoamines such as norepinephrine and serotonin, have elevated norepinephrine and serotonin levels in the frontal cortex,...

Attenuated sensitivity to neuroactive steroids in γ-aminobutyrate type A receptor delta subunit knockout mice

Mihalek, Robert M., Banerjee, Pradeep K., Korpi, Esa R., Quinlan, Joseph J., Firestone, Leonard L., Mi, Zhi-Ping, ...

γ-Aminobutyric acid (GABA) type A receptors mediate fast inhibitory synaptic transmission and have been implicated in responses to sedative/hypnotic agents (including neuroactive steroids), anxiety,...

Mouse model of Sanfilippo syndrome type B produced by targeted disruption of the gene encoding α-N-acetylglucosaminidase

Li, Hong Hua, Yu, Wei-Hong, Rozengurt, Nora, Zhao, Hui-Zhi, Lyons, Karen M., Anagnostaras, Stephan, ...

The Sanfilippo syndrome type B is an autosomal recessive disorder caused by mutation in the gene (NAGLU) encoding α-N-acetylglucosaminidase, a lysosomal enzyme required for the stepwise degradation...

Trace but not delay fear conditioning requires attention and the anterior cingulate cortex

Han, C. J., O'Tuathaigh, Colm M., Van Trigt, Laurent, Quinn, Jennifer J., Fanselow, Michael S., Mongeau, Raymond, ...

Higher cognitive functions such as attention have been difficult to model in genetically tractable organisms. In humans, attention-distracting stimuli interfere with trace but not delay conditioning,...

Trace fear conditioning is enhanced in mice lacking the δ subunit of the GABAA receptor

Wiltgen, Brian J., Sanders, Matthew J., Ferguson, Carolyn, Homanics, Gregg E., Fanselow, Michael S.

The δ subunit of the GABAA receptor (GABAAR) is highly expressed in the dentate gyrus of the hippocampus. Genetic deletion of this subunit reduces synaptic and extrasynaptic inhibition and decreases...

Long-Term Memory Deficits in Pavlovian Fear Conditioning in Ca2+/Calmodulin Kinase Kinase α-Deficient Mice▿

Blaeser, Frank, Sanders, Matthew J., Truong, Nga, Ko, Shanelle, Wu, Long Jun, Wozniak, David F., ...

Signaling by the Ca2+/calmodulin kinase (CaMK) cascade has been implicated in neuronal gene transcription, synaptic plasticity, and long-term memory consolidation. The CaM kinase kinase α (CaMKKα)...

A High Through-Put Reverse Genetic Screen Identifies Two Genes Involved in Remote Memory in Mice

Matynia, Anna, Anagnostaras, Stephan G., Wiltgen, Brian J., Lacuesta, Maress, Fanselow, Michael S., Silva, Alcino J.

Previous studies have revealed that the initial stages of memory formation require several genes involved in synaptic, transcriptional and translational mechanisms. In contrast, very little is known...

The α1 Subunit of the GABA(A) Receptor Modulates Fear Learning and Plasticity in the Lateral Amygdala

Wiltgen, Brian J., Godsil, Bill P., Peng, Zechun, Saab, Faysal, June, Harry L., Linn, Michael L. Van, ...

Synaptic plasticity in the amygdala is essential for emotional learning. Fear conditioning, for example, depends on changes in excitatory transmission that occur following NMDA receptor activation...