Identification of motor unit discharge patterns in time-frequency plane

Authors:
Ales Holobar;Damjan Zazula
Affiliations:
Faculty of Electrical Engineering and Computer Science, University of Maribor, Maribor, Slovenia;Faculty of Electrical Engineering and Computer Science, University of Maribor, Maribor, Slovenia
Venue:
MCBC'06 Proceedings of the 7th WSEAS International Conference on Mathematics & Computers in Biology & Chemistry
Year:
2006

Citing 4
Cited 0

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Abstract

This paper presents a novel approach to decomposition of multichannel surface electromyograms recorded during low-level isometric muscle contractions. The approach is based on special time-frequency matrices of measured signals, enables separation of contributions of different motor units in time-frequency plane and is not sensitive to the superimpositions of motor unit action potentials. The results on both synthetic and real surface electromyograms prove the proposed approach is robust to noise and has potential clinical applications for the non-invasive analysis of single motor unit properties.