Abstract
Evaluation in low degree of muscular contraction is important to diagnose disorders on nervous system or muscular tissue, and to study the biomechanical behavior of the trunk. The electromyogram (EMG) is frequently contaminated by electrocardiogram (ECG) when recorded on trunk muscles. The ECG removing is challenging because there is spectral overlapping of signals. A high-pass filter with 30 Hz cutoff has been considered a good removal technique from the literature. However, the EMG information below 30 Hz is lost. In order to solve this problem, a template subtraction method is proposed, for which the template is based on the contaminated signal itself. The proposed method is compared to high-pass Butterworth filtering and it is shown that the method has successfully removed the ECG interference and preserved better the EMG information in lower frequencies.
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© 2015 Springer International Publishing Switzerland
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Costa Junior, J.D., de Seixas, J.M., Miranda de Sá, A.M.F.L. (2015). Removing Electrocardiogram in EMG Signals of Low Intensity. In: Lacković, I., Vasic, D. (eds) 6th European Conference of the International Federation for Medical and Biological Engineering. IFMBE Proceedings, vol 45. Springer, Cham. https://doi.org/10.1007/978-3-319-11128-5_7
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DOI: https://doi.org/10.1007/978-3-319-11128-5_7
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-11127-8
Online ISBN: 978-3-319-11128-5
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