Proceedings of the KOSOMBE Conference (대한의용생체공학회:학술대회논문집)
- Volume 1997 Issue 11
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- Pages.55-58
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- 1997
The Decomposition of EMG signals using Template Matiching Method in the frequency domain
주파수 템플릿 정합법을 사용한 EMG 신호 분해
- Park, S.H. (Dept. of Interdisciplinary program in Biomedical Eng., Pusan National Univ.) ;
- Lee, Y.W. (Dept. of School of Medicine., Pusan National Univ.) ;
- Go, H.W. (Dept. of School of Medicine., Pusan National Univ.) ;
- Ye, S.Y. (Dept. of Electronic Eng., Pusan National Univ.) ;
- Eom, S.H. (Dept. of Electronic Eng., Pusan National Univ.) ;
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Nam, K.G.
(Dept. of Electronic Eng., Pusan National Univ.)
;
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Jun, K.R.
(Dept. of Medical Eng., Pusan National Univ.)
- 박세훈 (부산대학교 의공학협동과정) ;
- 이영우 (부산대학교 의과대학) ;
- 고현운 (부산대학교 의과대학) ;
- 예수영 (부산대학교 전자공학과) ;
- 엄상희 (부산대학교 전자공학과) ;
-
남기곤
(부산대학교 전자공학과)
;
-
전계록
(부산대학교병원 의공학과)
- Published : 1997.11.28
Abstract
In this paper, we study a signal processing method which extracts each MUAP(motor unit action potential) from EMG(Electromyogram) interference pattern or clinical diagnostic purposes. First of all, differential digital filtering is selected or eliminating the spike components of the MUAP's from the background noise. And, the algorithm identifies the spikes over the certanin threshold by template matching in frequency domain. After missing or false firing actor is cut off at the IPI(inter pulse interval) histogram, we averages the MUAP waveforms from the raw signal using the identified spikes as triggers, and Finally, measures their amplitudes, durations, and numbers of phases. Specially, We introduce algorithm performed by template matching in the frequency domain. A typical 3-s signal recorded from the biceps brachii muscle using a conventional needle electrode during a isometric contraction is used. Finally, the method decomposed five simultaneous active MUAP's from original EMG signal.
Keywords