RECORDING CHARACTERISTICS OF THE SURFACE EMG ELECTRODES
RECORDING CHARACTERISTICS OF THE SURFACE EMG ELECTRODES
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DOI：
10.1002/mus.880171111
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发表时间：
1994-11-01
期刊：
影响因子：
3.4
通讯作者：
NANDEDKAR, SD
中科院分区：
文献类型：
--
作者：
BARKHAUS, PE;NANDEDKAR, SD
常规运动神经传导研究使用表面肌电信号电极。大多数估计运动单位(MU)数量的技术都是基于表面肌电信号记录。因此，评估这些电极的摄取面积是很重要的。我们记录了正常人二头肌的表面肌电运动单位动作电位(SMUAP)。SMUAP波幅由浅部MU(距皮肤表面10 mm以内)的42uV降至深部(距皮肤表面20 mm以上)的11uV。我们推断，表面电极的拾取半径小于20 mm。讨论了表面电极的有限摄取面积对复合肌肉动作电位的分析、MU数目的估计和表面EMG记录的意义。(C)1994年John Wiley&Sons，Inc.
Routine motor nerve conduction studies are conducted using surface EMG electrodes. Most techniques of estimating the number of motor units (MUs) are based on surface EMG recordings. Therefore, it is important to assess the uptake area of these electrodes. We recorded surface EMG motor unit action potentials (SMUAPs) from the biceps muscle of normal subjects. The SMUAP amplitude fell from 42 mu V for the superficially located MUs (i.e., within 10 mm of skin surface) to 11 mu V for the deep MUs (i.e., more than 20 mm from the skin surface). We infer that the pickup radius of the surface electrode is less than 20 mm. The implications of the limited uptake area of the surface electrodes to the analysis of compound muscle action potentials, estimation of the number of MUs, and the surface EMG recordings are discussed. (C) 1994 John Wiley & Sons, Inc.