Nielsen, J.B., Conway, B.A., Halliday, D.M., Perreault, M.C., Hultborn, H.
The basic locomotor rhythm in the cat is generated by a neuronal network in the spinal cord. The exact organization of this network and its drive to the spinal motoneurones is unknown. The purpose of...
Nielsen, J.B., Conway, B.A., Halliday, D.M., Perreault, M.C., Hultborn, H.
The basic locomotor rhythm in the cat is generated by a neuronal network in the spinal cord. The exact organization of this network and its drive to the spinal motoneurones is unknown. The purpose of...
Nielsen, J.B., Conway, B.A., Halliday, D.M., Perreault, M.C., Hultborn, H.
The basic locomotor rhythm in the cat is generated by a neuronal network in the spinal cord. The exact organization of this network and its drive to the spinal motoneurones is unknown. The purpose of...
Nielsen, J.B., Conway, B.A., Halliday, D.M., Perreault, M.C., Hultborn, H.
The basic locomotor rhythm in the cat is generated by a neuronal network in the spinal cord. The exact organization of this network and its drive to the spinal motoneurones is unknown. The purpose of...
Disynaptic reciprocal inhibition of ankle extensors in spastic patients (1994)
Crone, C., Nielsen, J., Petersen, N., Ballegaard, M., Hultborn, H.
The soleus Hoffmann-reflex (H-reflex) was conditioned by a preceding stimulation of the common peroneal nerve in 74 healthy control subjects and 39 patinets with spasticily in the lower extremities...
Crone, C, Hultborn, H, Kiehn, O, Mazieres, L, Wigström, H
1. During investigation of the tonic stretch reflex in the unanaesthetized decerebrate cat we observed that a short train of impulses in Ia afferents from the soleus muscle (or its synergists) may...
Hounsgaard, J, Hultborn, H, Jespersen, B, Kiehn, O
1. In the preceding paper (Crone, Hultborn, Kiehn, Mazieres & Wigström, 1988) it was shown that a short-lasting synaptic excitation ('on' stimulus) of extensor motoneurones (primarily triceps surae)...
Conway, B A, Hultborn, H, Kiehn, O, Mintz, I
1. Intracellular recordings were made from lumbar alpha-motoneurones in unanaesthetized decerebrate acute spinal cats. The response of motoneurones to direct current pulse injection or synaptic...
Reciprocal Ia inhibition between ankle flexors and extensors in man.
Crone, C, Hultborn, H, Jespersen, B, Nielsen, J
1. Reciprocal inhibition between antagonist muscle groups at the ankle has been investigated in sixty healthy subjects. Hoffmann reflexes (H reflexes) in the soleus and tibialis anterior muscles were...
Assessing changes in presynaptic inhibition of I a fibres: a study in man and the cat.
Hultborn, H, Meunier, S, Morin, C, Pierrot-Deseilligny, E
1. A method to assess changes in presynaptic inhibition of I a afferent terminals in man is proposed. The soleus H reflex was facilitated by a heteronymous I a volley from quadriceps and the amount...
Changes in presynaptic inhibition of Ia fibres at the onset of voluntary contraction in man.
Hultborn, H, Meunier, S, Pierrot-Deseilligny, E, Shindo, M
1. Two independent methods were used, in man, to assess changes in presynaptic inhibition of I a terminals at the onset of selective voluntary contractions: (1) measurement of the amount of...
Reciprocal inhibition during the tonic stretch reflex in the decerebrate cat.
Fu, T C, Hultborn, H, Larsson, R, Lundberg, A
1. The aim of this study was to investigate post-synaptic reciprocal Ia inhibition during the stretch reflex; particularly the extent to which an increased Ia excitation of the Ia inhibitory...
Neuronal pathway of the recurrent facilitation of motoneurones
Hultborn, H., Jankowska, Elżbieta, Lindström, S., Roberts, W.
1. The recurrent facilitation of motoneurones is a disinhibition, i.e. a release of the motoneurones from a sustained hyperpolarization evoked by tonically active inhibitory interneurones. Only two...
Hultborn, H., Jankowska, Elẓbieta, Lindström, S.
1. The effects of impulses in recurrent motor axon collaterals on reflex transmission from different types of primary afferents to motoneurones were investigated in the cat by conditioning of PSPs...
Recurrent inhibition of interneurones monosynaptically activated from group Ia afferents
Hultborn, H., Jankowska, Elẓbieta, Lindström, S.
1. Interneurones monosynaptically excited from large muscle spindle (Ia) afferents and inhibited from motor axon collaterals were searched for in the lumbar spinal cord of the cat.
Relative contribution from different nerves to recurrent depression of Ia IPSPs in motoneurones
Hultborn, H., Jankowska, Elẓbieta, Lindström, S.
1. The pattern of depression of Ia IPSPs by volleys in recurrent motor axon collaterals was investigated in motoneurones supplying hind-limb muscles in the cat. The test IPSPs were evoked by...
Hultborn, H, Pierrot-Deseilligny, E
1. The recurrent inhibition, brought about by a conditioning H-reflex discharge, was estimated in human subjects by the amplitude of a test H-reflex involving only the soleus motoneurones which fired...
Recurrent inhibition and afterhyperpolarization following motoneuronal discharge in the cat.
Hultborn, H, Pierrot-Deseilligny, E, Wigström, H
1. The relation between the size of a monosynaptic reflex (varying from the smallest values to the maximal motor response) and the output from Renshaw cells was investigated. This relation was...
Input-output relations in the pathway of recurrent inhibition to motoneurones in the cat.
Hultborn, H, Pierrot-Deseilligny, E
1. The output from Renshaw cells caused by a phasic motor volley was investigated when these neurones were submitted to a background firing secondary to a tonic motor discharge elicited by a...
Organization of common synaptic drive to motoneurones during fictive locomotion in the spinal cat
Nielsen, JB, Conway, BA, Halliday, DM, Perreault, M-C, Hultborn, H
The basic locomotor rhythm in the cat is generated by a neuronal network in the spinal cord. The exact organization of this network and its drive to the spinal motoneurones is unknown. The purpose of...
Crone, C, Hultborn, H, Kiehn, O, Mazieres, L, Wigström, H
1. During investigation of the tonic stretch reflex in the unanaesthetized decerebrate cat we observed that a short train of impulses in Ia afferents from the soleus muscle (or its synergists) may...
Hounsgaard, J, Hultborn, H, Jespersen, B, Kiehn, O
1. In the preceding paper (Crone, Hultborn, Kiehn, Mazieres & Wigström, 1988) it was shown that a short-lasting synaptic excitation ('on' stimulus) of extensor motoneurones (primarily triceps surae)...
Conway, B A, Hultborn, H, Kiehn, O, Mintz, I
1. Intracellular recordings were made from lumbar alpha-motoneurones in unanaesthetized decerebrate acute spinal cats. The response of motoneurones to direct current pulse injection or synaptic...
Reciprocal Ia inhibition between ankle flexors and extensors in man.
Crone, C, Hultborn, H, Jespersen, B, Nielsen, J
1. Reciprocal inhibition between antagonist muscle groups at the ankle has been investigated in sixty healthy subjects. Hoffmann reflexes (H reflexes) in the soleus and tibialis anterior muscles were...
Assessing changes in presynaptic inhibition of I a fibres: a study in man and the cat.
Hultborn, H, Meunier, S, Morin, C, Pierrot-Deseilligny, E
1. A method to assess changes in presynaptic inhibition of I a afferent terminals in man is proposed. The soleus H reflex was facilitated by a heteronymous I a volley from quadriceps and the amount...
Changes in presynaptic inhibition of Ia fibres at the onset of voluntary contraction in man.
Hultborn, H, Meunier, S, Pierrot-Deseilligny, E, Shindo, M
1. Two independent methods were used, in man, to assess changes in presynaptic inhibition of I a terminals at the onset of selective voluntary contractions: (1) measurement of the amount of...
Reciprocal inhibition during the tonic stretch reflex in the decerebrate cat.
Fu, T C, Hultborn, H, Larsson, R, Lundberg, A
1. The aim of this study was to investigate post-synaptic reciprocal Ia inhibition during the stretch reflex; particularly the extent to which an increased Ia excitation of the Ia inhibitory...
Neuronal pathway of the recurrent facilitation of motoneurones
Hultborn, H., Jankowska, Elżbieta, Lindström, S., Roberts, W.
1. The recurrent facilitation of motoneurones is a disinhibition, i.e. a release of the motoneurones from a sustained hyperpolarization evoked by tonically active inhibitory interneurones. Only two...
Hultborn, H., Jankowska, Elẓbieta, Lindström, S.
1. The effects of impulses in recurrent motor axon collaterals on reflex transmission from different types of primary afferents to motoneurones were investigated in the cat by conditioning of PSPs...
Recurrent inhibition of interneurones monosynaptically activated from group Ia afferents
Hultborn, H., Jankowska, Elẓbieta, Lindström, S.
1. Interneurones monosynaptically excited from large muscle spindle (Ia) afferents and inhibited from motor axon collaterals were searched for in the lumbar spinal cord of the cat.
Relative contribution from different nerves to recurrent depression of Ia IPSPs in motoneurones
Hultborn, H., Jankowska, Elẓbieta, Lindström, S.
1. The pattern of depression of Ia IPSPs by volleys in recurrent motor axon collaterals was investigated in motoneurones supplying hind-limb muscles in the cat. The test IPSPs were evoked by...
Hultborn, H, Pierrot-Deseilligny, E
1. The recurrent inhibition, brought about by a conditioning H-reflex discharge, was estimated in human subjects by the amplitude of a test H-reflex involving only the soleus motoneurones which fired...
Recurrent inhibition and afterhyperpolarization following motoneuronal discharge in the cat.
Hultborn, H, Pierrot-Deseilligny, E, Wigström, H
1. The relation between the size of a monosynaptic reflex (varying from the smallest values to the maximal motor response) and the output from Renshaw cells was investigated. This relation was...
Input-output relations in the pathway of recurrent inhibition to motoneurones in the cat.
Hultborn, H, Pierrot-Deseilligny, E
1. The output from Renshaw cells caused by a phasic motor volley was investigated when these neurones were submitted to a background firing secondary to a tonic motor discharge elicited by a...
Organization of common synaptic drive to motoneurones during fictive locomotion in the spinal cat
Nielsen, JB, Conway, BA, Halliday, DM, Perreault, M-C, Hultborn, H
The basic locomotor rhythm in the cat is generated by a neuronal network in the spinal cord. The exact organization of this network and its drive to the spinal motoneurones is unknown. The purpose of...
Enríquez-Denton, M, Nielsen, J, Perreault, M-C, Morita, H, Petersen, N, Hultborn, H
In cat lumbar motoneurones, disynaptic inhibitory postsynaptic potentials (IPSPs) evoked by stimulation of antagonist motor nerves were depressed for at least 150 ms following conditioning...
State-dependent modulation of sensory feedback
By tradition - and for historical reasons - reflex pathways and interneurones have been named by their dominating sensory input. Later studies have demonstrated that each individual interneurone, as...
Hultborn, H, Denton, M Enríquez, Wienecke, J, Nielsen, J B
Electrophysiological and computational evidence indicate that the excitatory current from the synapses on the somato-dendritic membrane is not large enough to drive the motoneurones to the firing...