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커프 신경전극을 위한 저잡음 증폭기 시스템 개발

Other Titles
 Development of a Low-Noise Amplifier System for Nerve Cuff Electrodes 
 송강일  ;  추준욱  ;  서준교  ;  최귀원  ;  유선국  ;  윤인찬 
 Journal of Biomedical Engineering Research (의공학회지), Vol.32(1) : 45-54, 2011 
Journal Title
 Journal of Biomedical Engineering Research  (의공학회지) 
Issue Date
Cuff electrodes have a benefit for chronic electroneurogram(ENG) recording while minimizing nerve damage. However, the ENG signals are usually contaminated by electromyogram(EMG) activity from the surrounding muscle, the thermal noise generated within the source resistance, and the electric noise generated primarily at the first stage of the amplifier. This paper proposes a new cuff electrode to reduce the interference of EMG signals. An additional middle electrode was placed at the center of cuff electrode. As a result, the proposed cuff electrode achieved a higher signal-to-interference ratio compared to the conventional tripolar cuff. The cuff electrode was then assembled together with closure, headstage, and hermetic case including electronic circuits. This paper also presents a lownoise amplifier system to improve signal-to-noise ratio. The circuit was designed based on the noise analysis to minimize the electronic noise. The result shows that the total noise of the amplifier was below for a cuff impedance of and the common-mode rejection ratio was 115 dB at 1 kHz. In the current study, the performance of nerve cuff electrode system was evaluated by monitoring afferent nerve signals under mechanical stimuli in a rat animal model
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실)
Yonsei Authors
송강일(Song, Kang Il) ; 유선국(Yoo, Sun Kook)
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