Muscle fiber recovery functions studied with double pulse stimulation

Autor:	M, Mihelin, J V, Trontelj, E, Stålberg
Rok vydání:	1991
Předmět:	Time Factors Refractory Period Electrophysiological Electromyography Muscles Neural Conduction Action Potentials Humans Signal Processing Computer-Assisted Muscle Denervation Muscular Dystrophies Muscle Contraction
Zdroj:	Musclenerve. 14(8)
ISSN:	0148-639X
Popis:	Direct electrical stimulation with paired pulses at varied intervals was used to study the propagation velocity and action potential amplitude recovery functions (VRF and ARF) of single muscle fibers. Following a subnormal period with slowed conduction, most of the muscle fibers tested in healthy subjects showed a period of supernormal propagation velocity starting at 3 to 12 ms, with a peak between about 5 and 15 ms, a mean increase of 7%, and an approximately logarithmic decay toward 1 second. The onset of supernormality was earlier in muscle fibers from patients with muscular dystrophy and significantly delayed in those from denervated muscles. Denervated muscle fibers also had a significantly longer refractory period.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=pmid________::60cc8ad49b24d9885e7611cb09addea1 https://pubmed.ncbi.nlm.nih.gov/1890998 Zobrazit plný text záznamu Plný text