A Muscle as a System with Parametric Excitation

Design and implementation of a surface electromyogram system for sport field application

“…The action potential of a muscle fiber has a fixed magnitude, regardless of the intensity of the stimulus that generates the response. Thus, the intensity with which the muscle acts does not increase the net height of the action potential pulse but does increase the rate with which each muscle fiber fires and the number of fibers that are activated at any given time [1].…”

“…It produces two phenomena, force and a bioelectrical signal recorded as the electomyogram EMG [1]. Surface or needle electrodes may be used to pick-up the myoelectical signal.…”