Muscular Contraction Onset Detection from Surface Electromyogram Signal to the Command of Functional Electrical Stimulators
In order to detect the beginning of the paretic muscle contraction by surface electromyogram signal (EMG), an algorithm based on the identification of motor unit action potentials by principal component analysis and wavelet transform. was implemented. It was evaluated by comparing with other reported in the literature and marks made by an expert. Both of them were applied to healthy and paretic EMG signals and corrupted with additive noise of different levels. While both the proposed algorithm as the control method carried out with similar detection accuracy, the algorithm presented in this study showed minor errors and deviations from the marks of expert.
muscular contraction onset detection surface electromyogram paretic muscle principal component analysis wavelet transform