Surface EMG: The issue of electrode location
Surface EMG: The issue of electrode location
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DOI：
10.1016/j.jelekin.2008.07.006
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发表时间：
2009-10-01
影响因子：
2.5
通讯作者：
Rainoldi, A.
中科院分区：
文献类型：
--
作者：
Mesin, L.;Merletti, R.;Rainoldi, A.
本文有助于澄清电极位置对表面肌电信号检测的关键条件，并导致对肌电变量的估计不同于在附近其他位置得到的估计。虽然以前的一些研究概述了避免神经化区(或肌腹)的必要性，但许多作者将电极放置在感兴趣肌肉的中央部分或凸起，那里可能是神经化区。计算机模拟被用来解释神经支配区域对信号的幅度、频率和传导速度估计的影响，以及避免在其附近放置电极的必要性。从四肢和躯干的一些浅表肌肉(拇短展肌、拇短屈肌、二头肌、上斜方肌、股内侧肌、股外侧肌)记录的实验信号被处理，为模拟得到的结果提供支持。建议使用多通道技术来估计神经支配区域的位置，并适当选择检测点的最佳位置(S)，以便在运动分析期间对肌电变量进行有意义的估计。(C)2008爱思唯尔有限公司。保留所有权利。
This paper contributes to clarifying the conditions under which electrode position for surface EMG detection is critical and leads to estimates of EMG variables that are different from those obtained in other nearby locations. Whereas a number of previous works outline the need to avoid the innervation zone (or the muscle belly), many authors place electrodes in the central part or bulge of the muscle of interest where the innervation zone is likely to be. Computer simulations are presented to explain the effect of the innervation zone on amplitude, frequency and conduction velocity estimates from the signal and the need to avoid placing electrodes near it. Experimental signals recorded from some superficial muscles of the limbs and trunk (abductor pollicis brevis, flexor pollicis brevis, biceps, upper trapezius, vastus medialis, vastus lateralis) were processed providing support for the findings obtained from simulations. The use of multichannel techniques is recommended to estimate the location of the innervation zone and to properly choose the optimal position of the detection point(s) allowing meaningful estimates of EMG variables during movement analysis. (C) 2008 Elsevier Ltd. All rights reserved.