On-line analysis of neuromuscular function

A simple online system for collecting EMG data from surface recording electrodes and force data has been developed to study muscular weakness in multiple sclerosis (MS) patients and children. The parameters of force, integrated EMG, peak positive and negative amplitudes and zero-crossing frequencies are simultaneously recorded. Leg measurements show clear quantifiable differences between normal muscles and highly fatiguable or weak muscles in MS patients. This can provide a measure of the effect of specific therapeutic strategies. Facial studies have been used to quantify the level of recovery after paralysis (e.g. in Bell´s palsy) and provide a means of demonstrating spastic contractures in partially recovered facial muscles.<>