Motor unit contribution to surface-EMG. I. Experimental findings

Author

Roeleveld, Karin ; Stegeman, Dick F. ; Blok, Joleen H. ; Vingerhoets, Dick M.

Author_Institution

Inst. of Neurology, Univ. Hosp. Nijmegen, Netherlands

Volume

4

fYear

1996

fDate

31 Oct-3 Nov 1996

Firstpage

1510

Abstract

Insight in the “building-stones” of EMG is essential for a proper interpretation of one of the most widely applied electrophysiological techniques. In the present paper, results from a comprehensive study on the contribution of single motor units (MUs) to surface EMG recordings are presented. This study gives insight in the contribution to the surface EMG of the motor unit potentials (MUPs) of motor units at different depths below the skin. It is shown that a distinct difference between the positive and the negative peak of MUPs exists, the latter with a more steep amplitude decline with MU depth. The signal area of the MUPs is least affected by the depth of the MU

Keywords

electromyography; depth below skin; electrophysiological technique; motor unit contribution; signal area; surface EMG; Bioelectric phenomena; Electric potential; Electrodes; Electromyography; Engineering in Medicine and Biology Society; Muscles; Needles; Nervous system; Neurophysiology; Skin;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE

Conference_Location

Amsterdam

Print_ISBN

0-7803-3811-1

Type

conf

DOI

10.1109/IEMBS.1996.647527

Filename

647527