Detección del inicio de la contracción muscular mediante electromiografía de superficie para el comando de estimuladores funcionales (Muscular contraction onset detection using surface electromyography to command functional stimulators)

Marcelo Alejandro Caamaño (, Claudia E Bonell (), Analía Soledad Cherniz (), Carolina Beatriz Tabernig (

Laboratorio de Ingeniería de Rehabilitación e Investigaciones Neuromusculares y Sensoriales, Facultad de Ingeniería, Bioingeniería, Universidad Nacional de Entre Ríos
This paper appears in: Revista IEEE América Latina

Publication Date: March 2011
Volume: 9,   Issue: 1 
ISSN: 1548-0992

Aiming to detect the muscular contraction onset of a paretic muscle through the electromyography signal, an algorithm based on the identification of motor unit action potential was implemented. The implemented method was evaluated comparing it with another reported in the bibliography (control method) and with marks of muscular contraction onset established by an expert. Both techniques were applied to healthy muscle signals corrupted with additive noise at different levels of SNR and paretic muscle signals. Although the proposed algorithm and the control method performed the detection with similar precision, the algorithm presented in this work showed minor errors and deviations from to the mark of the expert.

Index Terms:
muscular contraction onset detection, principal component analysis, surface electromyogram, wavelet transform   

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