| Presentation | 2007-05-21 Correlated activities beween primary motor cortex and skeletal muscles and their changes by sports experiences Tatsuya SUZUKI, Junichi USHIBA, Junichi USHIYAMA, Yoshihisa MASAKADO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Electroencephalogram (EEG) recorded from the primary motor cortex is coherent with the contralateral electromyogram (EMG) of a contracted skeletal muscle, and coherence analysis can evaluate such linear correlation quantitatively. Magnitudes of EEG-EMG coherence vary among the healthy subjects, and it remains unclear what neuronal factors are possible modulators. therefore in this study, we recorded EEG-EMG coherence during isometric ankle plantarflexion form a total of 102 healthy young subjects. As aresult, 67 subjects showed statistically significant magnitudes of coherency (0.1 - 0.8). It is known that coherency is negatively correlated with steadiness in isometric force, so we next compared EEG-EMG coherence between the subjects with or without sports experiences. The result showed significant decrease of coherency in the subjects with sports experience. We concluded that EEG-EMG coherence decreases with sports experiences in order to archive precise motor control, whereas non-skilled healthy subjects showed various level of EEG-EMG coherency as an innate nature. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cortico-muscular coherence / sports experience / steadiness of isometric force |
| Paper # | NC2007-4 |
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| Conference Information | |
| Committee | NC |
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| Conference Date | 2007/5/14(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Neurocomputing (NC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Correlated activities beween primary motor cortex and skeletal muscles and their changes by sports experiences |
| Sub Title (in English) | |
| Keyword(1) | Cortico-muscular coherence |
| Keyword(2) | sports experience |
| Keyword(3) | steadiness of isometric force |
| 1st Author's Name | Tatsuya SUZUKI |
| 1st Author's Affiliation | School of Fundamental Science and Technology, Graduate School of Keio University() |
| 2nd Author's Name | Junichi USHIBA |
| 2nd Author's Affiliation | Department of Biosciences and Information, Faculty of Science and Technology, Keio University |
| 3rd Author's Name | Junichi USHIYAMA |
| 3rd Author's Affiliation | Institute of Physical Education, Keio University |
| 4th Author's Name | Yoshihisa MASAKADO |
| 4th Author's Affiliation | Tsukigase Rehabiritation Center, Keio University |
| Date | 2007-05-21 |
| Paper # | NC2007-4 |
| Volume (vol) | vol.107 |
| Number (no) | 50 |
| Page | pp.pp.- |
| #Pages | 4 |
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