Article

Significant, reproducible changes occur in the surface myoelectric power spectral density as a function of muscle force. The power spectrum shifted to higher frequencies as the muscle force increased through most of the contraction range. At high muscle force levels, no evidence was found that would indicate the occurrence of synchronous firing of motor units. Careful attention was paid to avoid local muscle fatigue during the experimental sessions. The observed increase in median frequency and the change in relative power in two frequency bands of the spectrum may be useful in developing amplitude-insensitive control signals for use in such applications as myoelectrically controlled prostheses.

Langue : ANGLAIS

Identifiant basis : 1986000002