Motor unit action potential topography and its use in motor unit number estimation.

Abstract:

:High-density multichannel electromyography (EMG) recordings add spatial information to the temporal information content of the surface EMG (sEMG) signal. This study explores the potential value of such multichannel information at a single motor unit level, in particular for the improvement of motor unit number estimation (MUNE) techniques. It is shown that multichannel recordings make it easier to distinguish motor unit action potentials (MUAPs) and that MUAP combinations can be better resolved. Furthermore, the spatiotemporal information allows a quantitative assessment of the representativity of the mean of the recorded MUAPs in relation to the maximum CMAP, i.e., for the muscle as a whole. In general, this is practically impossible on the basis of temporal information alone. For these reasons, we expect that high-density sEMG has the potential to address several methodological limitations of single channel surface EMG recordings. This is specifically illustrated in this study for one of the MUNE techniques in use, the F-response method.

journal_name

Muscle Nerve

journal_title

Muscle & nerve

authors

Blok JH,Van Dijk JP,Zwarts MJ,Stegeman DF

doi

10.1002/mus.20357

subject

Has Abstract

pub_date

2005-09-01 00:00:00

pages

280-91

issue

3

eissn

0148-639X

issn

1097-4598

journal_volume

32

pub_type

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