Title :
Influence of joint angle on the calibration and performance of EMG amplitude estimators
Author :
Clancy, Edward A. ; Hogan, Neville
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., MIT, Cambridge, MA, USA
fDate :
5/1/1998 12:00:00 AM
Abstract :
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.
Keywords :
amplitude estimation; calibration; electromyography; medical signal processing; EMG amplitude estimators calibration; EMG amplitude estimators performance; EMG waveform characterization; auto-correlation information; biological system modeling; cross-correlation information; joint angle; spatial uncorrelation filters; stochastic processes; temporal whitening filters; Amplitude estimation; Biological system modeling; Calibration; Elbow; Electromyography; Information filtering; Information filters; Muscles; Road safety; Stochastic processes; Adult; Calibration; Elbow Joint; Electromyography; Female; Humans; Male; Models, Biological; Muscle Contraction; Range of Motion, Articular; Reference Values; Signal Processing, Computer-Assisted; Stochastic Processes;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
