| Presentation | 2012-09-29 A Preliminary Study on Text Input Method using Statistical Model of Cerebral Blood Flow Change Yoshiyuki TAZAWA, Hiroki MORI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For realizing communication aids for physically handicapped patients such as ALS,a character inputmethod,which doesn't require a voluntary movement,is proposed. The method is based on the scanning commu-nication system,where the cerebral blood flow change is used for the input trigger. The method is based on the automatic error correction method,and estimates user's input using the cerebral blood flow change model and thestatistical language model. In order to verify the effectiveness of the proposed method,character input experiments were performed using artificial data that were created by simulating the changes in cerebral blood flow. The experiment using two-dimension vector,maximum instantaneous amplitude and oscillation frequency within single answer periods,showed an accuracy of 85.8%. The experiment using eleven-dimension vector,consisting maximum instantaneous amplitudes fbr every answer periods,showed an accuracy of 51.7%. The accuracy was further improved up to 95.8% by using the MAP estimation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | BCI / NIRS / Scanning communication system / ALS |
| Paper # | SP2012-64,WIT2012-16 |
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| Conference Information | |
| Committee | WIT |
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| Conference Date | 2012/9/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Well-being Information Technology(WIT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Preliminary Study on Text Input Method using Statistical Model of Cerebral Blood Flow Change |
| Sub Title (in English) | |
| Keyword(1) | BCI |
| Keyword(2) | NIRS |
| Keyword(3) | Scanning communication system |
| Keyword(4) | ALS |
| 1st Author's Name | Yoshiyuki TAZAWA |
| 1st Author's Affiliation | Graduate School of Engineering, Utsunomiya University() |
| 2nd Author's Name | Hiroki MORI |
| 2nd Author's Affiliation | Graduate School of Engineering, Utsunomiya University |
| Date | 2012-09-29 |
| Paper # | SP2012-64,WIT2012-16 |
| Volume (vol) | vol.112 |
| Number (no) | 223 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |