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Authors: Ching-Fen Jiang 1 ; Nan-Ying Yu 1 and Yu Ching Lin 2

Affiliations: 1 I-Shou University, Taiwan ; 2 National Cheng Kung University, Taiwan

Keyword(s): Myofascial pain, Surface electromyography, Wavelet energy.

Related Ontology Subjects/Areas/Topics: Biomedical Applications ; Multimedia ; Multimedia Systems and Applications ; Telecommunications

Abstract: Upper-back myofascial pain is an increasingly significant syndrome associated with frequent computer using. However, the changes in neuromuscular functions incurred by myofascial pain are still under-discovered. This study aims to discover the changes in neuromuscular function on the taut band through signal analysis of surface electromyography. We first developed a fully automatic algorithm to detect the duration of an epoch of muscle contraction. Following that, the features of epochs in both time-domain and frequency-domain were extracted from the 13 patients to compare with the measurement from 13 normal subjects. The higher contraction strength with lower median frequency found in the patient group is similar to the reported changes with muscle fatigue. The signal was further analyzed by wavelet energy of 17 levels. The result shows that the energy measured from the patients exceeds that from the normal group at the low frequency band, suggesting that an increasing synchronizati on level of motor unit recruitment may cause the drop in the median frequency and the increase in contraction strength. (More)

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Paper citation in several formats:
Jiang, C.; Yu, N. and Ching Lin, Y. (2011). EXPLORING THE DIFFERENCES IN SURFACE ELECTROMYOGRAPHIC SIGNAL BETWEEN MYOFASCIAL-PAIN AND NORMAL GROUPS - Feature Extraction through Wavelet Denoising and Decomposition. In Proceedings of the International Conference on Signal Processing and Multimedia Applications (ICETE 2011) - SIGMAP; ISBN 978-989-8425-72-0, SciTePress, pages 203-206. DOI: 10.5220/0003515402030206

@conference{sigmap11,
author={Ching{-}Fen Jiang. and Nan{-}Ying Yu. and Yu {Ching Lin}.},
title={EXPLORING THE DIFFERENCES IN SURFACE ELECTROMYOGRAPHIC SIGNAL BETWEEN MYOFASCIAL-PAIN AND NORMAL GROUPS - Feature Extraction through Wavelet Denoising and Decomposition},
booktitle={Proceedings of the International Conference on Signal Processing and Multimedia Applications (ICETE 2011) - SIGMAP},
year={2011},
pages={203-206},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003515402030206},
isbn={978-989-8425-72-0},
}

TY - CONF

JO - Proceedings of the International Conference on Signal Processing and Multimedia Applications (ICETE 2011) - SIGMAP
TI - EXPLORING THE DIFFERENCES IN SURFACE ELECTROMYOGRAPHIC SIGNAL BETWEEN MYOFASCIAL-PAIN AND NORMAL GROUPS - Feature Extraction through Wavelet Denoising and Decomposition
SN - 978-989-8425-72-0
AU - Jiang, C.
AU - Yu, N.
AU - Ching Lin, Y.
PY - 2011
SP - 203
EP - 206
DO - 10.5220/0003515402030206
PB - SciTePress

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