Teager-Kaiser energy operation of surface EMG improves muscle activity onset detection

被引：208

作者：

Li, Xiaoyan ^{[1
]}

Zhou, Ping

Aruin, Alexander S.

机构：

[1] Univ Illinois, Dept Bioengn, Chicago, IL 60607 USA

[2] Univ Illinois, Dept Phys Therapy, Chicago, IL USA

[3] Rehabil Inst Chicago, Neural Engn Ctr Artificial Limbs, Chicago, IL 60611 USA

[4] Rehabil Inst Chicago, Sensory Motor Performance Program, Chicago, IL 60611 USA

[5] Northwestern Univ, Dept Phys Med & Rehabil, Chicago, IL 60611 USA

来源：

ANNALS OF BIOMEDICAL ENGINEERING | 2007年 / 35卷 / 09期

关键词：

Teager-Kaiser energy operator; muscle activity; onset detection; electromyogram;

D O I：

10.1007/s10439-007-9320-z

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

This study presents a novel method for detection of the onset time of muscle activity using surface electromyogram (EMG) signals. The method takes advantage of the nonlinear properties of the Teager-Kaiser energy (TKE) operator, which simultaneously considers the amplitude and instantaneous frequency of the surface EMG, and therefore increases the prospects of muscle activity detection. To detect the onset time of muscle activity, the surface EMG signal was first processed by the TKE operator to highlight motor unit activities of the muscle. Then a robust threshold-based algorithm was developed in the TKE domain to locate the onset of muscle activity. The validity of the proposed method was illustrated using various surface EMG simulations as well as experimental surface EMG recordings.

引用

页码：1532 / 1538

页数：7