Title :
Modelling of the nonstationary electromyogram (EMG)
Author :
Shwedyk, Ed ; Lam, Hok Hoi
Author_Institution :
Dept. of Electr. Eng., Manitoba Univ., Winnipeg, Man., Canada
Abstract :
Two single-trial variance estimators, the midpoint moving average estimator (MMAE) and the homomorphic filter, were applied to a 600-trial ensemble. The estimator´s output was compared with the ensemble average. The MMAE used a window length of half the variance´s risetime. For the MMAE the mean squared error ranged from 2.5% to 105%. Of the 600 trials, 324 trials had less than 20% error and 412 trials less than 30% error. The homomorphic filter had errors of 3.4% to 157%. Only 56 trials had less than 20% error.<>
Keywords :
bioelectric potentials; muscle; physiological models; ensemble average; homomorphic filter; midpoint moving average estimator; nonstationary electromyogram modelling; single-trial variance estimators;
Conference_Titel :
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1988.94871
