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Heteronymous inferior quadrantanopsia from a hypothalamic metastasis.
J Neurooncol
December 2005
Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA.
Changes in transmission in the pathway of heteronymous spinal recurrent inhibition from soleus to quadriceps motor neurons during movement in man.
Brain
September 1999
Department of Zoology, University of Oxford, Oxford, UK.
H reflexes were induced in the human quadriceps muscle by electrical stimulation of the femoral nerve. The reflexes were conditioned by prior stimulation of the inferior soleus nerve. The conditioning stimulus produced an inhibition of long duration (>20 ms).
View Article and Find Full Text PDFPattern of heteronymous recurrent inhibition in the human lower limb.
Exp Brain Res
April 1995
Neurophysiologie Clinique, Rééducation, Hôpital de la Salpêtrière, Paris, France.
Changes in the firing probability of motor units belonging to leg and thigh muscles were used to describe the pattern of distribution of recurrent inhibition evoked by motor discharges from various motor nuclei in the human lower limb. Discharges of units in soleus, gastrocnemius medialis, peroneus brevis, tibialis anterior, quadriceps and biceps femoris were investigated following a conditioning stimulation which evoked either a monosynaptic reflex in quadriceps, triceps surae or peroneal motor neurones, or an antidromic motor volley in one of the following nerves: inferior soleus, gastrocnemius medialis, superficial peroneal, deep peroneal, or femoral nerve. In many motor unit-nerve combinations a trough in the post-stimulus time histogram, indicating an inhibition, appeared immediately after the heteronymous Ia excitation.
View Article and Find Full Text PDFPattern of monosynaptic heteronymous Ia connections in the human lower limb.
Exp Brain Res
March 1994
Neurophysiologie Clinique, Rééducation, Hôpital de la Salpétrière, Paris, France.
Changes in the firing probability of single motor units in response to electrical stimulation of muscle nerves were used to derive the projections of muscle spindle Ia afferents to the motoneurones of various leg and thigh muscles. Discharges of units in soleus, gastrocnemius medialis, peroneus brevis, tibialis anterior, quadriceps, biceps femoris and semitendinosus were investigated after stimulation of inferior soleus, gastrocnemius medialis, superficial peroneal, deep peroneal and femoral nerves. Homonymous facilitation, occurring at the same latency as the H reflex and therefore attributed to monosynaptic Ia EPSPs, was found in virtually all the sampled units.
View Article and Find Full Text PDFGating of the afferent volley of the monosynaptic stretch reflex during movement in man.
J Physiol
December 1989
Clinical Neurophysiology, Rééducation, Hôpital de la Salpêtrière, Paris, France.
1. The time course of the changes in presynaptic inhibition of Ia fibres to soleus motoneurones has been investigated during a voluntary ramp-and-hold plantar flexion. 2.
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