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Quantitative Analysis Of The Effect Of Reference Electrode Position And Active Recording Electrode Size On Evoked Compound Muscle Action Potential, Yu-Lien Chou, Rai-Chi Chen, Tao-Chang Hsu
Quantitative Analysis Of The Effect Of Reference Electrode Position And Active Recording Electrode Size On Evoked Compound Muscle Action Potential, Yu-Lien Chou, Rai-Chi Chen, Tao-Chang Hsu
Rehabilitation Practice and Science
The purpose of this study is to quantitatively analyze the effect of reference electrode size on the amplitude, surface area, latency and duration of CMAP during routine NCV studies in median and ulnar nerves. We dilivered supramaximal stimulations over the wrist in the median and ulnar nerve examinations and obtained the data of CMAP parameters from APB and ADQ muscles. The data revealed: I)in median nerve examination: (1) The CMAP surface area and amplitude decreased markedly when the reference electrode was shifted from MP joint to IP joint of the thumb or to MP joint of the 5th finger. (2) …