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| Presentation | 2011-06-17 15:40 Changes of Excitability on Sensorimotor Cortex by Closed-Loop Brain-Machine Interface Mitsuaki Takemi, Misa Oto, Daiki Kamatani, Akio Kimura, Meigen Liu, Junichi Ushiba (Keio Univ.)  MBE2011-19 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (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) |
| (in English) | Brain-machine interface / Sensorimotor cortex / Event-related desynchronization / Near-infrared spectroscopy / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 84, MBE2011-19, pp. 45-50, June 2011. | |
| Paper # | MBE2011-19 | |
| Date of Issue | 2011-06-10 (MBE) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | MBE2011-19 |
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| Conference Information | |
| Committee | MBE |
| Conference Date | 2011-06-17 - 2011-06-17 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | ME in general |
| Paper Information | |
| Registration To | MBE |
| Conference Code | 2011-06-MBE |
| Language | Japanese |
| 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 |
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| 1st Author's Name | Mitsuaki Takemi |
| 1st Author's Affiliation | Keio University (Keio Univ.) |
| 2nd Author's Name | Misa Oto |
| 2nd Author's Affiliation | Keio University (Keio Univ.) |
| 3rd Author's Name | Daiki Kamatani |
| 3rd Author's Affiliation | Keio University (Keio Univ.) |
| 4th Author's Name | Akio Kimura |
| 4th Author's Affiliation | Keio University (Keio Univ.) |
| 5th Author's Name | Meigen Liu |
| 5th Author's Affiliation | Keio University (Keio Univ.) |
| 6th Author's Name | Junichi Ushiba |
| 6th Author's Affiliation | Keio University (Keio Univ.) |
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| Speaker | Author-1 |
| Date Time | 2011-06-17 15:40:00 |
| Presentation Time | 25 minutes |
| Registration for | MBE |
| Paper # | MBE2011-19 |
| Volume (vol) | vol.111 |
| Number (no) | no.84 |
| Page | pp.45-50 |
| #Pages | 6 |
| Date of Issue | 2011-06-10 (MBE) |
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