NDLI: On cuff imbalance and tripolar ENG amplifier configurations

Content Provider	IEEE Xplore Digital Library
Author	Triantis, I.F. Demosthenous, A. Donaldson, N.
Copyright Year	1964
Abstract	Electroneurogram (ENG) recording techniques benefit from the use of tripolar cuffs because they assist in reducing interference from sources outside the cuff. However, in practice the performance of ENG amplifier configurations, such as the quasi-tripole and the true-tripole, has been widely reported to be degraded due to the departure of the tripolar cuff from ideal behavior. This paper establishes the presence of cuff imbalance and investigates its relationship to cuff asymmetry, cuff end-effects and interference source proximity. The paper also presents a comparison of the aforementioned amplifier configurations with a new alternative, termed the adaptive-tripole, developed to automatically compensate for cuff imbalance. The output signal-to-interference ratio of the three amplifier configurations were compared in vivo for two interference signals (stimulus artifact and M-wave) superimposed on compound action potentials. The experiments showed (for the first time) that the two interference signals result in different cuff imbalance values. Nevertheless, even with two distinct cuff imbalances present, the adaptive-tripole performed better than the other two systems in 61.9% of the trials.
Sponsorship	IEEE Engineering in Medicine and Biology Society
Page Count	7
File Size	446411
Starting Page	314
Ending Page	320
File Format	PDF
ISSN	00189294
Volume Number	52
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electromyography Electrodes Degradation In vivo Neuromuscular stimulation Muscles Interference elimination Pollution measurement Councils Physics tripolar cuff electrodes CAP cuff imbalance EMG ENG amplifier stimulus artifact
Content Type	Text
Resource Type	Article
Subject	Biomedical Engineering

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