Vuskovic M: Temporal vs. Spectral Approach to Feature Extraction from Prehensile EMG Signals

Abstract – There are generally two nonparametric approaches in feature extraction from temporal signals: temporal and spectral approach. Both approaches were used in classifica-tion of prehensile electromyographic (EMG) signals. The goal of this paper is to define and evaluate some successful meth-ods in both approaches and to determine experimentally which method and approach is the most appropriate. The evaluation is based on classification of real EMGs with an ART-based classifier. The efficiency analysis is also provided. The results have shown that a less expensive temporal ap-proach has strong advantages over the spectral methods