Identifying motor units in longitudinal studies with high-density surface electromyography

Eduardo Martinez Valdes; Francesco Negro; Christopher M. Laine; Deborah Falla; Frank Mayer; Dario Farina

doi:10.1007/978-3-319-46669-9_27

Identifying motor units in longitudinal studies with high-density surface electromyography

Eduardo Martinez Valdes, Francesco Negro, Christopher M. Laine, Deborah Falla, Frank Mayer, Dario Farina^*

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

We investigated the possibility to identify motor units (MUs) with high-density surface electromyography (HDEMG) over experimental sessions in different days. 10 subjects performed submaximal knee extensions across three sessions in three days separated by one week, while EMG was recorded from the vastus medialis muscle with high-density electrode grids. The shapes of the MU action potentials (MUAPs) over multiple channels extracted from HDEMG decomposition were matched across sessions by cross-correlation. Forty and twenty percent of the MUs decomposed could be tracked across two and three sessions, respectively average cross ± the sessions. For example, mean discharge rate and recruitment thresholds were measured with an intra-class correlation coefficient (ICCs) >0.80. These results strongly suggest that the same MUs were indeed identified across sessions. This possibility will allow monitoring changes in MU properties following interventions or during the progression of neuromuscular disorders.

Original language	English
Title of host publication	Converging Clinical and Engineering Research on Neurorehabilitation II
Subtitle of host publication	Proceedings of the 3rd International Conference on NeuroRehabilitation (ICNR2016), October 18-21, 2016, Segovia, Spain
Editors	Jaime Ibanez, Jose Gonzalez-Vargas, Jose Maria Azorin, Metin Akay, Jose Luis Pons
Publisher	Springer
Pages	147-151
Number of pages	5
Volume	15
DOIs	https://doi.org/10.1007/978-3-319-46669-9_27
Publication status	E-pub ahead of print - 13 Oct 2016
Event	3rd International Conference on NeuroRehabilitation (ICNR 2016), October 18-21, 2016, Segovia, Spain - Palacio Real de La Granja de San Ildefonso, Segovia, Spain Duration: 18 Oct 2016 → 21 Oct 2016 http://www.icnr2016.org/

Publication series

Name	Biosystems and Biorobotics
Volume	15
ISSN (Print)	2195-3562
ISSN (Electronic)	2195-3570

Conference

Conference	3rd International Conference on NeuroRehabilitation (ICNR 2016), October 18-21, 2016, Segovia, Spain
Country/Territory	Spain
City	Segovia
Period	18/10/16 → 21/10/16
Internet address	http://www.icnr2016.org/

ASJC Scopus subject areas

Artificial Intelligence
Biomedical Engineering
Mechanical Engineering

Access to Document

10.1007/978-3-319-46669-9_27

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Martinez Valdes, E., Negro, F., Laine, C. M., Falla, D., Mayer, F., & Farina, D. (2016). Identifying motor units in longitudinal studies with high-density surface electromyography. In J. Ibanez, J. Gonzalez-Vargas, J. M. Azorin, M. Akay, & J. L. Pons (Eds.), Converging Clinical and Engineering Research on Neurorehabilitation II: Proceedings of the 3rd International Conference on NeuroRehabilitation (ICNR2016), October 18-21, 2016, Segovia, Spain (Vol. 15, pp. 147-151). (Biosystems and Biorobotics; Vol. 15). Springer. Advance online publication. https://doi.org/10.1007/978-3-319-46669-9_27

Martinez Valdes, Eduardo ; Negro, Francesco ; Laine, Christopher M. et al. / Identifying motor units in longitudinal studies with high-density surface electromyography. Converging Clinical and Engineering Research on Neurorehabilitation II: Proceedings of the 3rd International Conference on NeuroRehabilitation (ICNR2016), October 18-21, 2016, Segovia, Spain. editor / Jaime Ibanez ; Jose Gonzalez-Vargas ; Jose Maria Azorin ; Metin Akay ; Jose Luis Pons. Vol. 15 Springer, 2016. pp. 147-151 (Biosystems and Biorobotics).

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title = "Identifying motor units in longitudinal studies with high-density surface electromyography",

abstract = "We investigated the possibility to identify motor units (MUs) with high-density surface electromyography (HDEMG) over experimental sessions in different days. 10 subjects performed submaximal knee extensions across three sessions in three days separated by one week, while EMG was recorded from the vastus medialis muscle with high-density electrode grids. The shapes of the MU action potentials (MUAPs) over multiple channels extracted from HDEMG decomposition were matched across sessions by cross-correlation. Forty and twenty percent of the MUs decomposed could be tracked across two and three sessions, respectively average cross ± the sessions. For example, mean discharge rate and recruitment thresholds were measured with an intra-class correlation coefficient (ICCs) >0.80. These results strongly suggest that the same MUs were indeed identified across sessions. This possibility will allow monitoring changes in MU properties following interventions or during the progression of neuromuscular disorders.",

author = "{Martinez Valdes}, Eduardo and Francesco Negro and Laine, {Christopher M.} and Deborah Falla and Frank Mayer and Dario Farina",

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booktitle = "Converging Clinical and Engineering Research on Neurorehabilitation II",

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Martinez Valdes, E, Negro, F, Laine, CM, Falla, D, Mayer, F & Farina, D 2016, Identifying motor units in longitudinal studies with high-density surface electromyography. in J Ibanez, J Gonzalez-Vargas, JM Azorin, M Akay & JL Pons (eds), Converging Clinical and Engineering Research on Neurorehabilitation II: Proceedings of the 3rd International Conference on NeuroRehabilitation (ICNR2016), October 18-21, 2016, Segovia, Spain. vol. 15, Biosystems and Biorobotics, vol. 15, Springer, pp. 147-151, 3rd International Conference on NeuroRehabilitation (ICNR 2016), October 18-21, 2016, Segovia, Spain, Segovia, Spain, 18/10/16. https://doi.org/10.1007/978-3-319-46669-9_27

Identifying motor units in longitudinal studies with high-density surface electromyography. / Martinez Valdes, Eduardo; Negro, Francesco; Laine, Christopher M. et al.
Converging Clinical and Engineering Research on Neurorehabilitation II: Proceedings of the 3rd International Conference on NeuroRehabilitation (ICNR2016), October 18-21, 2016, Segovia, Spain. ed. / Jaime Ibanez; Jose Gonzalez-Vargas; Jose Maria Azorin; Metin Akay; Jose Luis Pons. Vol. 15 Springer, 2016. p. 147-151 (Biosystems and Biorobotics; Vol. 15).

Research output: Chapter in Book/Report/Conference proceeding › Chapter

TY - CHAP

T1 - Identifying motor units in longitudinal studies with high-density surface electromyography

AU - Martinez Valdes, Eduardo

AU - Negro, Francesco

AU - Laine, Christopher M.

AU - Falla, Deborah

AU - Mayer, Frank

AU - Farina, Dario

PY - 2016/10/13

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AB - We investigated the possibility to identify motor units (MUs) with high-density surface electromyography (HDEMG) over experimental sessions in different days. 10 subjects performed submaximal knee extensions across three sessions in three days separated by one week, while EMG was recorded from the vastus medialis muscle with high-density electrode grids. The shapes of the MU action potentials (MUAPs) over multiple channels extracted from HDEMG decomposition were matched across sessions by cross-correlation. Forty and twenty percent of the MUs decomposed could be tracked across two and three sessions, respectively average cross ± the sessions. For example, mean discharge rate and recruitment thresholds were measured with an intra-class correlation coefficient (ICCs) >0.80. These results strongly suggest that the same MUs were indeed identified across sessions. This possibility will allow monitoring changes in MU properties following interventions or during the progression of neuromuscular disorders.

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BT - Converging Clinical and Engineering Research on Neurorehabilitation II

A2 - Ibanez, Jaime

A2 - Gonzalez-Vargas, Jose

A2 - Azorin, Jose Maria

A2 - Akay, Metin

A2 - Pons, Jose Luis

PB - Springer

T2 - 3rd International Conference on NeuroRehabilitation (ICNR 2016), October 18-21, 2016, Segovia, Spain

Y2 - 18 October 2016 through 21 October 2016

ER -

Martinez Valdes E, Negro F, Laine CM, Falla D, Mayer F, Farina D. Identifying motor units in longitudinal studies with high-density surface electromyography. In Ibanez J, Gonzalez-Vargas J, Azorin JM, Akay M, Pons JL, editors, Converging Clinical and Engineering Research on Neurorehabilitation II: Proceedings of the 3rd International Conference on NeuroRehabilitation (ICNR2016), October 18-21, 2016, Segovia, Spain. Vol. 15. Springer. 2016. p. 147-151. (Biosystems and Biorobotics). Epub 2016 Oct 13. doi: 10.1007/978-3-319-46669-9_27

Identifying motor units in longitudinal studies with high-density surface electromyography

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