Alterations in the Peak Amplitude Distribution of the Surface Electromyogram Poststroke
Alterations in the Peak Amplitude Distribution of the Surface Electromyogram Poststroke
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DOI：
10.1109/tbme.2012.2205249
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发表时间：
2013-03-01
影响因子：
4.6
通讯作者：
Rymer, William Zev
中科院分区：
文献类型：
--
作者：
Li, Xiaoyan;Suresh, Aneesha;Rymer, William Zev
我们介绍一种新的方法来检查脊髓运动神经元参与中风后使用表面肌电图（EMG）记录系统。14名患有轻度至重度肌无力的慢性中风幸存者参加了这项研究。表面肌电信号收集从第一背侧骨间肌，而受试者进行等距食指外展与麻痹或对侧的手在不同的匹配力水平。与对侧肌肉相比，在麻痹肌肉处观察到不同的峰值幅度分布模式，这可能是由中风后运动单位的病理改变引起的。与传统的电生理学方法相比，本研究提出的峰值幅度分布分析提供了一种方便的方法，以帮助识别中风后肌无力和其他症状的具体机制。
We introduce a new method to examine the spinal motoneuron involvement after stroke using a surface electromyography (EMG) recording system. Fourteen chronic stroke survivors with mild to severe muscle weakness participated in the study. Surface EMG signals were collected from the first dorsal interosseous muscle while subjects performed isometric index finger abduction with paretic or contralateral hand at different matched force levels. Compared with the contralateral muscles, different patterns of peak amplitude distribution were observed at the paretic muscles, which could be induced by motor unit pathological alterations following a stroke. Compared with the conventional electrophysiological methods, the peak amplitude distribution analysis proposed in this study provides a convenient approach to help identify specific mechanisms of muscle weakness and other symptoms after stroke.