| Presentation | 2010-07-27 A Study on Estimating a Vowel Read Silently from Human Electrocorticogram Shigeyuki IKEDA, Tomohiro SHIBATA, Naohiro TSUYUGUCHI, Naoki NAKANO, Yoshinobu HARA, Rieko OKADA, Kazushi IKEDA, Amami KATO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years, Brain Machine Interface (BMI), which retrieves cortical brain activity by invasive or noninvasive method of measurement and connects external computer has been studied intensively. The ultimate goal of this study is to develop a BCI for verbal communication without utterance. As a step toward the goal, we conducted a silent reading task in which two epilepsy patients with Electrocorticogram (ECoG) electrodes were asked to silently read a vowel, and investigated whether the vowel read was identified by discriminating vowels from the ECoG with Support Vector Machine (SVM). Using data of all electrodes, we confirmed that over-fitting arises due to few all trials of task. Therefore, we estimated discriminating performance of each electrode, then made the color-map of these performance. From the result, we selected electrodes of high performance, then estimated discriminating performance of combination of selected electrodes with test data. As a result, we obtained 53-63% of discriminating performance, which is much higher than the chance level (33%). |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | ECoG / BMI / Silent reading / SVM |
| Paper # | NC2010-37 |
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| Committee | NC |
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| Conference Date | 2010/7/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| 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) | A Study on Estimating a Vowel Read Silently from Human Electrocorticogram |
| Sub Title (in English) | |
| Keyword(1) | ECoG |
| Keyword(2) | BMI |
| Keyword(3) | Silent reading |
| Keyword(4) | SVM |
| 1st Author's Name | Shigeyuki IKEDA |
| 1st Author's Affiliation | Graduate School of Information Science, NAIST() |
| 2nd Author's Name | Tomohiro SHIBATA |
| 2nd Author's Affiliation | Graduate School of Information Science, NAIST |
| 3rd Author's Name | Naohiro TSUYUGUCHI |
| 3rd Author's Affiliation | Graduate School of Medicine, Osaka City University |
| 4th Author's Name | Naoki NAKANO |
| 4th Author's Affiliation | Kinki University Hospital Neurosurgery |
| 5th Author's Name | Yoshinobu HARA |
| 5th Author's Affiliation | Graduate School of Biological Science, NAIST |
| 6th Author's Name | Rieko OKADA |
| 6th Author's Affiliation | Graduate School of Medicine Kinki University |
| 7th Author's Name | Kazushi IKEDA |
| 7th Author's Affiliation | Graduate School of Information Science, NAIST |
| 8th Author's Name | Amami KATO |
| 8th Author's Affiliation | Kinki University Hospital Neurosurgery:CREST, JST |
| Date | 2010-07-27 |
| Paper # | NC2010-37 |
| Volume (vol) | vol.110 |
| Number (no) | 149 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |