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Authors: Petra Povalej Bržan 1 ; Vojko Glaser 1 ; Simon Zelič 1 ; Juan Álvaro Gallego 2 ; Juan Pablo Romero Muñoz 3 and Aleš Holobar 1

Affiliations: 1 University of Maribor, Slovenia ; 2 Consejo Superior de Investigaciones Científicas, Spain ; 3 12 de Octubre University Hospital, Faculty of Health Sciences and Francisco de Vitoria University, Spain

Keyword(s): Surface Electromyograms, Decomposition, Motor Units, Pathological Tremor, Motor Unit Discharge Patterns.

Abstract: The impact of severity of pathological tremor on surface EMG decomposition was systematically assessed on eight essential tremor patients. The inertial data and surface EMG signals were concurrently recorded from wrist extensor and flexor muscles of both patients’ arms. The inertial recordings were segmented into different tremor cycles and the tremor amplitude was assessed in each tremor cycle. Surface EMG was decomposed by Convolution Kernel Compensation (CKC) technique in order to yield individual motor unit discharge patterns in each tremor cycle. Accuracy of EMG decomposition was assessed for each identified motor unit and was largely uncorrelated with tremor amplitude. In all the patients, the percentage of EMG energy identified by decomposition and the number of identified motor units were found to be positively correlated with tremor amplitude, though the correlation was relatively weak and not always significant. The results demonstrate that the CKC decomposition not only co pes with moderate and severe tremor but also improves its performance with tremor intensity. (More)

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Paper citation in several formats:
Povalej Bržan, P.; Glaser, V.; Zelič, S.; Gallego, J.; Romero Muñoz, J. and Holobar, A. (2013). On the Impact of Pathological Tremor Intensity on Noninvasive Characterization of Motor Unit Discharge Properties. In Proceedings of the International Congress on Neurotechnology, Electronics and Informatics (NEUROTECHNIX 2013) - DeNeuro; ISBN 978-989-8565-80-8, SciTePress, pages 126-132. DOI: 10.5220/0004664001260132

@conference{deneuro13,
author={Petra {Povalej Bržan}. and Vojko Glaser. and Simon Zelič. and Juan Álvaro Gallego. and Juan Pablo {Romero Muñoz}. and Aleš Holobar.},
title={On the Impact of Pathological Tremor Intensity on Noninvasive Characterization of Motor Unit Discharge Properties},
booktitle={Proceedings of the International Congress on Neurotechnology, Electronics and Informatics (NEUROTECHNIX 2013) - DeNeuro},
year={2013},
pages={126-132},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004664001260132},
isbn={978-989-8565-80-8},
}

TY - CONF

JO - Proceedings of the International Congress on Neurotechnology, Electronics and Informatics (NEUROTECHNIX 2013) - DeNeuro
TI - On the Impact of Pathological Tremor Intensity on Noninvasive Characterization of Motor Unit Discharge Properties
SN - 978-989-8565-80-8
AU - Povalej Bržan, P.
AU - Glaser, V.
AU - Zelič, S.
AU - Gallego, J.
AU - Romero Muñoz, J.
AU - Holobar, A.
PY - 2013
SP - 126
EP - 132
DO - 10.5220/0004664001260132
PB - SciTePress

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