Document Detail

Removal of the electrocardiogram signal from surface EMG recordings using non-linearly scaled wavelets.
MedLine Citation:
PMID:  21470876     Owner:  NLM     Status:  Publisher    
The surface electromyographic (EMG) signal (EMG signal) recorded on some areas of the body, especially from the trunk, is often contaminated with heart muscle electrical activity (ECG) caused by the proximity of the collection sites to the heart. It is therefore necessary to suppress or separate the ECG signal from the EMG signal during the analysis. However, the suppression should not eliminate low frequency components of the EMG signal. The purpose of this study was to develop a method to remove the ECG from contaminated EMG signals by combining the wavelet transform with an independent component analysis using the wavelet spectra. In contrast to other methods, this method uses the spectral differences of the EMG and ECG signals for the discrimination. Hence, no separately measured reference ECG signal is required. The method removes ECG contaminations of various shapes. It is superior to filtering with a Butterworth filter because it does not eliminate the low frequency EMG signals in the range between 10 and 50Hz. It is known that the information contained in different frequency bands of the EMG is not identical. It is therefore important to retain the EMG signal from high and low frequencies which is possible by applying the presented cleaning procedure.
Vinzenz von Tscharner; Bjoern Eskofier; Peter Federolf
Related Documents :
17880516 - Development of a quantitative bio/chemiluminescence spectrometer determining quantum yi...
24290056 - Using an alternate light source to detect electrically singed feathers and hair in a fo...
21228386 - Binocular summation improves performance to defocus-induced blur.
20057656 - Measurements of infrared fluorescence of certain optical materials as stimulated by vis...
24008796 - Influence of multiple sclerosis, age and degree of disability, in the position of the c...
25163776 - Anomalous behavior of nearly-entire visible band manipulated with degenerated image dip...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-4
Journal Detail:
Title:  Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology     Volume:  -     ISSN:  1873-5711     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9109125     Medline TA:  J Electromyogr Kinesiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011. Published by Elsevier Ltd.
Human Performance Laboratory, University of Calgary, Calgary, Alberta, Canada.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Optimization of chemical induction conditions for human herpesvirus 8 (HHV-8) reactivation with 12-O...
Next Document:  Ischemia-reperfusion injury-induced pulmonary mitochondrial damage.