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Titolo:
Meridian-like character of reflex electromyogram activity in longissimus dorsi muscles
Autore:
Ma, C; Zheng, Z; Xie, YK;
Indirizzi:
Chinese Acad Med Sci, Peking Union Med Coll, Inst Basic Med Sci, Beijing 100005, Peoples R China Chinese Acad Med Sci Beijing Peoples R China 100005 005, Peoples R China
Titolo Testata:
CHINESE SCIENCE BULLETIN
fascicolo: 1, volume: 46, anno: 2001,
pagine: 57 - 62
SICI:
1001-6538(200101)46:1<57:MCOREA>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOTOR NUCLEUS; CAT;
Keywords:
longissimus dorsi muscle; reflex electromyogram activity; acupuncture; needle-feeling propagation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Xie, YK Chinese Acad Med Sci, Peking Union Med Coll, Inst Basic Med Sci, Beijing 100005, Peoples R China Chinese Acad Med Sci Beijing Peoples R China 100005 ples R China
Citazione:
C. Ma et al., "Meridian-like character of reflex electromyogram activity in longissimus dorsi muscles", CHIN SCI B, 46(1), 2001, pp. 57-62

Abstract

We studied the temporal and spacial character of the electromyogram (EMG) evoked by acupuncture in longissimus dorsi (LD) muscles of rat, and evaluated the effect of needling direction or local blockade on EMG propagation. When certain sites on LD muscle were acupunctured, asynchronous EMG could beactivated not only at the acupunctured point, but also within the muscle region supplied by the adjacent 2-3 vertebral segments. The EMG evoked by stimulation on the borderline of aponeurosis and muscle venter was larger in amplitude than those on the other sites in the same vertebral segment. Whenthe distance from the recorded site to stimulated site increased, the EMG amplitude decreased, and its latency prolonged. Acupuncture in an oblique direction toward rostral or caudal side of the muscle enhanced the EMG amplitude in the same direction. EMG activity was weakened and its propagation was blocked by local injection of procaine, These results indicated that thecharacter of EMG propagation evoked by acupuncture was related to the mechanism of needle-feeling propagation along the meridian.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 19:00:15