An analysis of EMG electrode configuration for targeted muscle reinnervation based neural machine interface

被引:136
作者
Huang, He [1 ]
Zhou, Ping [1 ,2 ]
Li, Guanglin [1 ,2 ]
Kuiken, Todd A. [1 ,2 ]
机构
[1] Rehabil Inst Chicago, Neural Engn Ctr Artificial Limbs, Chicago, IL 60611 USA
[2] Northwestern Univ, Dept Phys Med & Rehabil, Chicago, IL 60611 USA
关键词
classification; clinical EMG electrode configurations; control of artificial limbs; electromyography (EMG); prosthesis; targeted muscle reinnervation;
D O I
10.1109/TNSRE.2007.910282
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Targeted muscle reinnervation (TMR) is a novel neural machine interface for improved myoelectric prosthesis control. Previous high-density (HD) surface electromyography (EMG) studies have indicated that tremendous neural control information can be extracted from the reinnervated muscles by EMG pattern recognition (PR). However, using a large number of EMG electrodes hinders clinical application of the TMR technique. This study investigated a reduced number of electrodes and the placement required to extract sufficient neural control information for accurate identification of user movement intents. An electrode selection algorithm was applied to the HD EMG recordings from each of four TMR amputee subjects. The results show that when using only 12 selected bipolar electrodes the average accuracy over subjects for classifying 16 movement intents was 93.0 (+/- 3.3)%, just 1.2% lower than when using the entire HD electrode complement. The locations of selected electrodes were consistent with the anatomical reinnervation sites. Additionally, a practical protocol for clinical electrode placement was developed, which does not rely on complex HD EMG experiment and analysis while maintaining a classification accuracy of 88.7 +/- 4.5%. These outcomes provide important guidelines for practical electrode placement that can promote future clinical application of TMR and EMG PR in the control of multifunctional prostheses.
引用
收藏
页码:37 / 45
页数:9
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