Development of a Low-Noise Amplifier for Recording Peripheral Nerve Signals

Title
Development of a Low-Noise Amplifier for Recording Peripheral Nerve Signals
Authors
송강일추준욱윤인찬최귀원서준교
Keywords
Electroneurogram (ENG); Nerve cuff electrode; Low-noise amplifier
Issue Date
2010-05
Publisher
대한의용생체공학회
Abstract
A low–noise amplifier was developed for recording peripheral nerve signals with cuff electrodes. The output was amplified with a gain of 10000 and bandpass filtered from 300 to 5000 Hz. The total noise of the amplifier was below 1 μV RMS for a cuff impedance of 1 kΩ, and the common-mode rejection ratio was 107 dB at 1 kHz. To enlarge the amplitude of the nerve signal in the limited implant site, the cuff electrode was fabricated with the dimension of the inner diameter of 1 mm and the length of 10 mm. The cuff electrode was then assembled together with closure, pre-amplifier circuits and headstage connector. In experiments, the performance was evaluated in vivo on the sciatic nerve in a rat animal model.
URI
http://pubs.kist.re.kr/handle/201004/38141
Appears in Collections:
KIST Publication > Conference Paper
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