Document Detail

Influence of joint angle on the calibration and performance of EMG amplitude estimators.
MedLine Citation:
PMID:  9581066     Owner:  NLM     Status:  MEDLINE    
Multiple-channel electromyogram (EMG) amplitude estimators incorporating temporal whitening filters and/or spatial uncorrelation filters contain a characterization of the EMG waveform (specifically, auto- and cross-correlation information) which may vary with joint angle. This paper reports on an experimental study which investigated the influence of joint angle on these EMG amplitude estimators. It was found that little or no relative improvement in estimator performance resulted from altering either temporal whitening or spatial uncorrelation filters as a function of joint angle. Also, the absolute performance level of these estimators did not vary with joint angle.
E A Clancy; N Hogan
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  IEEE transactions on bio-medical engineering     Volume:  45     ISSN:  0018-9294     ISO Abbreviation:  IEEE Trans Biomed Eng     Publication Date:  1998 May 
Date Detail:
Created Date:  1998-06-04     Completed Date:  1998-06-04     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0012737     Medline TA:  IEEE Trans Biomed Eng     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  664-8     Citation Subset:  IM    
Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge 02139, USA.
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MeSH Terms
Elbow Joint / physiology*
Models, Biological
Muscle Contraction / physiology*
Range of Motion, Articular / physiology
Reference Values
Signal Processing, Computer-Assisted*
Stochastic Processes
Grant Support

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