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Titolo:
PATTERN OF HETERONYMOUS RECURRENT INHIBITION IN THE HUMAN LOWER-LIMB
Autore:
MEUNIER S; PIERROTDESEILLIGNY E; SIMONETTAMOREAU M;
Indirizzi:
HOP LA PITIE SALPETRIERE,NEUROPHYSIOL CLIN,47 BLVD HOP F-75651 PARIS 13 FRANCE HOP LA PITIE SALPETRIERE,NEUROPHYSIOL CLIN F-75651 PARIS 13 FRANCE
Titolo Testata:
Experimental Brain Research
fascicolo: 1, volume: 102, anno: 1994,
pagine: 149 - 159
SICI:
0014-4819(1994)102:1<149:POHRII>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
VOLUNTARY CONTRACTION; SYNAPTIC CONNECTIONS; MOTONEURONS; MUSCLES; QUADRICEPS; PATHWAYS; FLEXOR; CAT;
Keywords:
RECURRENT INHIBITION; RENSHAW CELLS; SPINAL REFLEXES; MAN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
S. Meunier et al., "PATTERN OF HETERONYMOUS RECURRENT INHIBITION IN THE HUMAN LOWER-LIMB", Experimental Brain Research, 102(1), 1994, pp. 149-159

Abstract

Changes in the firing probability of motor units belonging to leg andthigh 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. This inhibition is thought to be Renshaw in origin, because it appearedand increased with the conditioning motor discharge, was independent of the conditioning stimulus intensity per se and had a long duration. These recurrent connections were widely distributed with a pattern very similar to that described for heteronymous monosynaptic Ia excitation. In particular Renshaw coupling between muscles operating at different joints seems to be the rule in the human lower limb.

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Documento generato il 27/11/20 alle ore 21:48:40