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Stimulus Artifact Suppression Using the Stimulation Synchronous Adaptive Impulse Correlated Filter for Surface EMG Application
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 Title & Authors
Stimulus Artifact Suppression Using the Stimulation Synchronous Adaptive Impulse Correlated Filter for Surface EMG Application
Yeom, Ho-Jun; Park, Ho-Dong; Chang, Young-Hui; Park, Young-Chol; Lee, Kyoung-Joung;
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The voluntary EMG (vEMG) signal from electrically stimulated muscle is very useful for feedback control in functional electrical stimulation. However, the recorded EMG signal from surface electrodes has unwanted stimulation artifact and M-wave as well as vEMG. Here, we propose an event-synchronous adaptive digital filter for the suppression of stimulation artifact and M-wave in this application. The proposed method requires a simple experimental setup that does not require extra hardware connections to obtain the reference signals of adaptive digital filter. For evaluating the efficiency of this proposed method, the filter was tested and compared with a least square (LS) algorithm using previously measured data. We conclude that the cancellation of both primary and residual stimulation artifacts is enhanced with an event-synchronous adaptive digital filter and shows promise for clinical application to rehabilitate paretic limbs. Moreover because this algorithm is far simpler than the LS algorithm, it is portable and ready for real-time application.
Stimulus artifact;Electrical stimulation;Electromyography;Event-synchronous adaptive digital filter;
 Cited by
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A Stimulus Artifact Removal Technique for SEMG Signal Processing During Functional Electrical Stimulation, IEEE Transactions on Biomedical Engineering, 2015, 62, 8, 1959  crossref(new windwow)
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