THEORETICAL-ANALYSIS OF SURFACE EMG IN VOLUNTARY ISOMETRIC CONTRACTION

被引:12
作者
MIYANO, H
SADOYAMA, T
机构
[1] Agency of Industrial Science and Technology, Industrial Products Research Institute, Tokyo, 21-2, 4-Chome, Shimomaruko, Ota-ku
来源
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY AND OCCUPATIONAL PHYSIOLOGY | 1979年 / 40卷 / 03期
关键词
Entropy; Motor unit recruitment; Spectral density; Stochastic model; Surface EMG;
D O I
10.1007/BF00426938
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
A new stochastic model of the surface EMG is suggested and the spectral density of the surface EMG is studied theoretically and experimentally to confirm the validity of this model. Theoretical results show that while the contraction level is not so high, the shape of the spectral density (distribution) does not change and its amplitude is directly proportional to the motor unit firing frequency and recruitment. To illustrate the theoretical results, experiments were carried out for rectus femoris and biceps brachii. The surface EMG was lead off by bipolar surface electrodes. And the spectral density of the surface EMG was calculated using FFT algorithm. From these experimental results, it was confirmed that our theoretical results were almost valid. © 1979 Springer-Verlag.
引用
收藏
页码:155 / 164
页数:10
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