EXPERIMENTAL DETECTION OF THE AVERAGE MOTOR UNIT ACTION POTENTIAL FREQUENCY BY MEANS OF SURFACE ELECTROMYOGRAMM

 

A. M. Shayduk, S. A. Ostanin, E. R. Yusupov

Altai State University, Barnaul

Received September 9, 2011, after correction - September 21, 2011

 

Abstract. We present here experimental records of surface electromyogramms (sEMG) and their average power spectra. We demonstrate that the detailed analysis of all sEMG power spectra reveals significant peaks at the characteristic position.  This position can be associated with the average repetition rate of a single motor unit action potential.  Also, we prove here the possibility to measure the dependence of the myo-pulse repetition rate on the muscle mechanical load.

Keywords: sEMG pulse simulations, spectral analysis of electromyographical signals.