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Titolo:
EFFECTS OF FEMORAL NERVE-STIMULATION ON THE ELECTROMYOGRAM AND REFLEXEXCITABILITY OF TIBIALIS ANTERIOR AND SOLEUS
Autore:
MEUNIER S; MOGYOROS I; KIERNAN MC; BURKE D;
Indirizzi:
PRINCE WALES MED RES INST,HIGH ST SYDNEY NSW 2031 AUSTRALIA PRINCE WALES MED RES INST SYDNEY NSW 2031 AUSTRALIA PRINCE HENRY HOSP,DEPT NEUROL SYDNEY NSW AUSTRALIA PRINCE WALES HOSP,DEPT NEUROL SYDNEY NSW AUSTRALIA
Titolo Testata:
Muscle & nerve
fascicolo: 9, volume: 19, anno: 1996,
pagine: 1110 - 1115
SICI:
0148-639X(1996)19:9<1110:EOFNOT>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
PRESYNAPTIC INHIBITION; VOLUNTARY CONTRACTION; H-REFLEX; IA; FACILITATION; CONNECTIONS; AFFERENTS; MUSCLES; LIMB;
Keywords:
HETERONYMOUS PROJECTIONS; MONOSYNAPTIC; RENSHAW CELLS; LOWER LIMB;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
16
Recensione:
Indirizzi per estratti:
Citazione:
S. Meunier et al., "EFFECTS OF FEMORAL NERVE-STIMULATION ON THE ELECTROMYOGRAM AND REFLEXEXCITABILITY OF TIBIALIS ANTERIOR AND SOLEUS", Muscle & nerve, 19(9), 1996, pp. 1110-1115

Abstract

The present study was undertaken to determine whether femoral nerve stimulation would produce heteronymous reflex responses in tibialis anterior (TA) and soleus, demonstrable by averaging the electromyogram (EMG) produced by a voluntary contraction, and whether the responsible changes in excitability were sufficient to affect the H reflexes of TA and soleus, In both muscles, femoral stimuli produced short-latency, presumably monosynaptic excitation, better defined in poststimulus averages of unrectified EMG, followed by long-lasting inhibition, better defined in averaged rectified traces. The H reflexes underwent changes at appropriate latencies, The thresholds for excitation and inhibitionwere, respectively, below and above threshold for the quadriceps M wave. The heteronymous responses were largely independent of stimulus rate and, within limits, scaled with the level of background contraction, The ability to define these heteronymous connections using relatively simple methodology extends their utility, Such tests may prove useful in probing pathophysiological mechanisms in individual patients. (C)1996 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 22:05:00