Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, Rua Pedro de Toledo, 650, 04039-002, Brazil.
Sunnybrook Health Sciences Centre, Division of Neurology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada.
Muscle Nerve. 2019 Feb;59(2):249-253. doi: 10.1002/mus.26366. Epub 2018 Nov 18.
In this study we aimed to determine the contribution of the E2 (reference electrode) to the compound muscle action potential (CMAP) amplitude during fibular motor recording to the tibialis anterior (TA) when E2 is placed over routine referential vs. alternative sites.
The CMAP was obtained from 10 healthy subjects, using the active electrode (E1) over sites routinely used as E2 for the TA, whereas the E2 was over the contralateral knee. The same procedure was performed with the E1 over alternative E2 sites.
Significant electrical signal was captured over routine E2 placement sites. Among the tested alternative E2 sites, the ipsilateral patella (especially its medial aspect) was the most electrically silent.
Using alternative E2 sites with near isoelectric recordings can optimize near-field potential measurement in the fibular motor recording to the TA and represents a more accurate way of measuring nerve and muscle function. Muscle Nerve 59:249-253, 2019.
本研究旨在确定在腓骨运动记录中,当 E2 放置在常规参考位置与替代位置时,E2 对胫骨前肌(TA)复合肌肉动作电位(CMAP)幅度的贡献。
使用常规 E2 位置(E1)记录 10 名健康受试者的 CMAP,而 E2 则放置在对侧膝关节上。以同样的方式在替代 E2 位置上记录 E1。
在常规 E2 放置位置上可捕获到明显的电信号。在测试的替代 E2 位置中,同侧髌骨(尤其是其内侧)的电信号最安静。
使用具有近等电记录的替代 E2 位置可以优化 TA 腓骨运动记录中的近场电位测量,这代表了一种更准确的测量神经和肌肉功能的方法。《肌肉神经》59:249-253, 2019.