Influence of Reference Electrode to Motor Unit Potential Parameters: Ouantitative Comparison between Monopolar and Concentric Needles

Authors

Rai-Chi Chan
Tao-Chang Hsu

Translated Title

參考電極對運動單元電位波參數之影響：同軸與單極針極記錄之定量比較

Abstract

The purpose of this study was to determine the influence of the reference electrode to the motor unit action potential parameters including amplitude, duration, surface area, phases and turns by reading the same recording area by monopolar and cocentric needles. A concentric needle was stuck into the subject's anterior tibialis muscle, online motor unit analysis was done by EMG-computer combinations. The sinal from the active recording electrode was shunted to another EMG-computer set for analysis of the same motor unit by adding a surface electrode as a reference electrode (monopolar needle recording pattern). After collecting 200 motor unit potentials, data analysis of five parameters were made for comparison. Significant differences in duration and surface area were found, but not in amplitude, turns and phases. Factors contributing to the results are discussed.

Language

Traditional Chinese

DOI Link

https://doi.org/10.6315/JRMA.198712.00398

First Page

39

Last Page

43

Recommended Citation

Chan, Rai-Chi and Hsu, Tao-Chang (1987) "Influence of Reference Electrode to Motor Unit Potential Parameters: Ouantitative Comparison between Monopolar and Concentric Needles," Rehabilitation Practice and Science: Vol. 15: Iss. 1, Article 6.
DOI: https://doi.org/10.6315/JRMA.198712.00398
Available at: https://rps.researchcommons.org/journal/vol15/iss1/6