Influence of visual feedback gain and contraction intensity on the discharge properties of motor units recruited in a force-matching task
Decomposition of intramuscular electromyogram (iEMG) into its constituent motor unit spike trains is a useful tool for understanding the neurophysiological control of muscle force. Some experimental results have shown that the performance in a force-matching motor task is influenced by the gain of t...
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| Format: | Online |
| Language: | English |
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Universidade Estadual de Campinas
2019
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| Online Access: | https://econtents.sbu.unicamp.br/eventos/index.php/pibic/article/view/407 |
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| author | Pinheiro, Felipe Colla Elias, Leonardo Abdala Toledo, Diana R. Kohn, André F. Lima, Felipe F. |
| author_facet | Pinheiro, Felipe Colla Elias, Leonardo Abdala Toledo, Diana R. Kohn, André F. Lima, Felipe F. |
| author_sort | Pinheiro, Felipe Colla |
| collection | Portal de Eventos Científicos da UNICAMP |
| container_reference | Revista dos Trabalhos de Iniciação Científica da UNICAMP; n. 26 (2018): Congresso de Iniciação Científica Unicamp |
| description | Decomposition of intramuscular electromyogram (iEMG) into its constituent motor unit spike trains is a useful tool for understanding the neurophysiological control of muscle force. Some experimental results have shown that the performance in a force-matching motor task is influenced by the gain of the visual feedback provided to the subject. In this project, the propose was to decompose iEMG signals from the Soleus muscle recorded in a force-matching task (plantarflexion contractions with different intensities). The motor unit spike trains were analyzed in six different conditions of visual feedback. From the results found, the visual feedback gain seems not to influence the discharge properties of MUs recruited in a force-matching task. Force intensity only influenced the number of recruited MUs and the MU FR, which is expected from the recruitment and rate coding mechanisms of force control. |
| first_indexed | 2025-10-08T13:50:43Z |
| format | Online |
| id | ojs-article-407 |
| institution | Universidade Estadual de Campinas |
| issn | 2596-1969 |
| language | eng |
| last_indexed | 2025-10-08T13:50:43Z |
| publishDate | 2019 |
| publisher | Universidade Estadual de Campinas |
| record_format | ojs |
| spelling | ojs-article-4072025-09-26T14:32:30Z Influence of visual feedback gain and contraction intensity on the discharge properties of motor units recruited in a force-matching task Pinheiro, Felipe Colla Elias, Leonardo Abdala Toledo, Diana R. Kohn, André F. Lima, Felipe F. Intramuscular electromyography Motor units Force control. Decomposition of intramuscular electromyogram (iEMG) into its constituent motor unit spike trains is a useful tool for understanding the neurophysiological control of muscle force. Some experimental results have shown that the performance in a force-matching motor task is influenced by the gain of the visual feedback provided to the subject. In this project, the propose was to decompose iEMG signals from the Soleus muscle recorded in a force-matching task (plantarflexion contractions with different intensities). The motor unit spike trains were analyzed in six different conditions of visual feedback. From the results found, the visual feedback gain seems not to influence the discharge properties of MUs recruited in a force-matching task. Force intensity only influenced the number of recruited MUs and the MU FR, which is expected from the recruitment and rate coding mechanisms of force control. Universidade Estadual de Campinas 2019-01-03 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artigo de convidado application/pdf https://econtents.sbu.unicamp.br/eventos/index.php/pibic/article/view/407 10.20396/revpibic262018407 Revista dos Trabalhos de Iniciação Científica da UNICAMP; n. 26 (2018): Congresso de Iniciação Científica Unicamp 2596-1969 eng https://econtents.sbu.unicamp.br/eventos/index.php/pibic/article/view/407/391 Copyright (c) 2019 Felipe Colla Pinheiro, Leonardo Abdala Elias http://creativecommons.org/licenses/by/4.0 |
| spellingShingle | Pinheiro, Felipe Colla Elias, Leonardo Abdala Toledo, Diana R. Kohn, André F. Lima, Felipe F. Intramuscular electromyography Motor units Force control. Influence of visual feedback gain and contraction intensity on the discharge properties of motor units recruited in a force-matching task |
| title | Influence of visual feedback gain and contraction intensity on the discharge properties of motor units recruited in a force-matching task |
| title_full | Influence of visual feedback gain and contraction intensity on the discharge properties of motor units recruited in a force-matching task |
| title_fullStr | Influence of visual feedback gain and contraction intensity on the discharge properties of motor units recruited in a force-matching task |
| title_full_unstemmed | Influence of visual feedback gain and contraction intensity on the discharge properties of motor units recruited in a force-matching task |
| title_short | Influence of visual feedback gain and contraction intensity on the discharge properties of motor units recruited in a force-matching task |
| title_sort | influence of visual feedback gain and contraction intensity on the discharge properties of motor units recruited in a force-matching task |
| topic | Intramuscular electromyography Motor units Force control. |
| url | https://econtents.sbu.unicamp.br/eventos/index.php/pibic/article/view/407 |
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