期刊
JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY
卷 24, 期 1, 页码 31-36出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jelekin.2013.11.002
关键词
Dystonia; Frequency analysis; Electromyography; Lower extremity
资金
- National Institute of General Medical Sciences [T32 GM 65841]
The purpose of this study was to develop an objective, quantitative tool for the diagnosis of lower extremity dystonia. Frequency domain analysis was performed on surface and fine-wire electromyography (EMG) signals collected from the lower extremity musculature of ten patients with suspected dystonia while performing walking trials at self-selected speeds. The median power frequency (MdPF) and percentage of total power contained in the low frequency range (%AUC(Total)) were determined for each muscle studied. Muscles exhibiting clinical signs of dystonia were found to have a shift of the MdPF to lower frequencies and a simultaneous increase in the %AUC(Total). A threshold frequency of 70 Hz identified dystonic muscles with 73% sensitivity and 63% specificity. These results indicate that frequency analysis can accurately distinguish dystonic from non-dystonic muscles. (C) 2013 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据