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Open Access Methodology

A novel approach to surface electromyography: an exploratory study of electrode-pair selection based on signal characteristics

Cynthia Kendell1*, Edward D Lemaire1, Yves Losier2, Adam Wilson2, Adrian Chan3 and Bernie Hudgins2

Author Affiliations

1 The Ottawa Hospital Rehabilitation Centre, 505 Smyth Road, Ottawa, ON, K1H8M2, Canada

2 Institute of Biomedical Engineering, UNB, 25 Dineen Drive, Fredericton, NB, E3B5A3, Canada

3 Department of Systems and Computer Engineering, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario, K1S 5B6, Canada

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Journal of NeuroEngineering and Rehabilitation 2012, 9:24  doi:10.1186/1743-0003-9-24

Published: 26 April 2012

Abstract

A 3 × 4 electrode array was placed over each of seven muscles and surface electromyography (sEMG) data were collected during isometric contractions. For each array, nine bipolar electrode pairs were formed off-line and sEMG parameters were calculated and evaluated based on repeatability across trials and comparison to an anatomically placed electrode pair. The use of time-domain parameters for the selection of an electrode pair from within a grid-like array may improve upon existing electrode placement methodologies.

Keywords:
Surface electromyography; Electrode array; Time-domain parameters; Frequency-domain parameters