Vorkommen und Bedeutung monophasischer Potentiale im Elektromyogramm der �u�eren Augenmuskeln von Kaninchen und Katze

Autor: Kiessling A, Gornig H, Asmussen G
Rok vydání: 1975
Předmět:
Zdroj: Albrecht von Graefes Archiv f�r Klinische und Experimentelle Ophthalmologie. 196:159-167
ISSN: 1435-702X
0065-6100
DOI: 10.1007/bf00414802
Popis: The EMG of extraocular muscles of rabbits and cats was recorded by a concentric-needle electrode provided for clinical use. The EMG showed spike activity (at least biphasic, fast waves of 1 to 2 msec duration) and characteristic long-duration monophasic waves (decline for up to 7 msec). The monophasic potentials are interpreted as local depolarizations arising at the nerve-muscle junctions of multiply innervated muscle fibers. Spike- and monophasic potentials are discharged in independent rhythms whose frequency changes when the head position is altered. The frequency of spike- and monophasic potentials are changed in the same direction by labyrinthine reflexes. Spontaneous monophasic potentials recruit at a lower threshold.
Databáze: OpenAIRE