| Presentation | 2011-06-17 Changes of excitability on sensorimotor cortex by closed-loop brain-machine interface Mitsuaki Takemi, Misa Oto, Daiki Kamatani, Akio Kimura, Meigen Liu, Junichi Ushiba, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A possible mechanism of brain-machine interface (BMI) assisted stroke rehabilitation of upper limb can be described as a closed-loop model, i.e. a patient receives visual or somatosensory feedback of normal brain activities following motor imagery, resulting motor learning. We, for evaluating this hypothesis, recruited fifteen healthy adults randomly assigning to one of three conditions; the closed-loop BMI (motor imagery with positive visual feedback), the unclosed-loop BMI (motor imagery with uncorrelated visual feedback) and the open-loop BMI(motor imagery without feedback). They trained motor imagery with the same assigned BMI for five successive days. Electroencephalogram (EEG) and near-infrared spectroscopy (NIRS) were recorded simultaneously, and the excitability of the primary sensorimotor cortex was evaluated. The result showed that event-related desynchronization of EEG, reflecting changes in cortical excitability, was increased in the closed-loop BMI, but hemodynamic response of NIRS was not change in all conditions (p<0.05). A closed-loop system of BMI rehabilitation is thus considered better in practice, and is expected to be capable of inducing stronger effects than other rehabilitation methods with motor imagery. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Brain-machine interface / Sensorimotor cortex / Event-related desynchronization / Near-infrared spectroscopy |
| Paper # | MBE2011-19 |
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| Conference Information | |
| Committee | MBE |
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| Conference Date | 2011/6/10(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | ME and Bio Cybernetics (MBE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Changes of excitability on sensorimotor cortex by closed-loop brain-machine interface |
| Sub Title (in English) | |
| Keyword(1) | Brain-machine interface |
| Keyword(2) | Sensorimotor cortex |
| Keyword(3) | Event-related desynchronization |
| Keyword(4) | Near-infrared spectroscopy |
| 1st Author's Name | Mitsuaki Takemi |
| 1st Author's Affiliation | School of Fundamental Science and Technology, Graduate School of Keio University() |
| 2nd Author's Name | Misa Oto |
| 2nd Author's Affiliation | School of Fundamental Science and Technology, Graduate School of Keio University |
| 3rd Author's Name | Daiki Kamatani |
| 3rd Author's Affiliation | Department of Rehabilitation Medicine, Keio University School of Medicine |
| 4th Author's Name | Akio Kimura |
| 4th Author's Affiliation | Keio University Tsukigase Rehabilitation Center |
| 5th Author's Name | Meigen Liu |
| 5th Author's Affiliation | Department of Rehabilitation Medicine, Keio University School of Medicine |
| 6th Author's Name | Junichi Ushiba |
| 6th Author's Affiliation | Department of Rehabilitation Medicine, Keio University School of Medicine:Keio University Tsukigase Rehabilitation Center:Department of Biosciences and Informatics, Faculty of Science and Technology, Keio University |
| Date | 2011-06-17 |
| Paper # | MBE2011-19 |
| Volume (vol) | vol.111 |
| Number (no) | 84 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |