| Presentation | 2009-11-13 A Topographic Analysis of Human Scalp Alpha EEG by the Complex-valued ICA Zhan ZHANG, Norihiro KATAYAMA, Kazuma WATANABE, Hiroto NAKATANI, Akihiro KARASHIMA, Mitsuyuki NAKAO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Sleepiness at the wheel is one of the causes of fatal crashes and highway accidents by car drivers. Since the EEG alpha activity occurs in association with the subjective sleepiness, and the alpha activities are observed in a mixed signal, aureate decomposition method has been required. In this study, we propose a method to decompose the time-delayed mixture of alpha source signals by using the time-frequency domain analysis and complex-valued independent component analysis. The method is applied to the human scalp EEG data to decompose the alpha activities occur associated with the subjective sleepiness during a driving simulation task. It is shown that this method provide information about not only the spatial distribution of alpha power (power map) generated by each source but also the phase difference among the recording site (phase map). The alpha power map and the phase map would be useful for the investigation of the mechanism of cortical alpha rhythms such as dipole estimation in the brain |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Human electroencephalography (EEG) / Alpha rhythm / Time-frequency domain analysis / Independent component analysis |
| Paper # | MBE2009-69 |
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| Conference Information | |
| Committee | MBE |
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| Conference Date | 2009/11/5(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | ME and Bio Cybernetics (MBE) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Topographic Analysis of Human Scalp Alpha EEG by the Complex-valued ICA |
| Sub Title (in English) | |
| Keyword(1) | Human electroencephalography (EEG) |
| Keyword(2) | Alpha rhythm |
| Keyword(3) | Time-frequency domain analysis |
| Keyword(4) | Independent component analysis |
| 1st Author's Name | Zhan ZHANG |
| 1st Author's Affiliation | Graduate School of Information Sciences, Tohoku University() |
| 2nd Author's Name | Norihiro KATAYAMA |
| 2nd Author's Affiliation | Graduate School of Information Sciences, Tohoku University |
| 3rd Author's Name | Kazuma WATANABE |
| 3rd Author's Affiliation | Graduate School of Information Sciences, Tohoku University |
| 4th Author's Name | Hiroto NAKATANI |
| 4th Author's Affiliation | DENSO CORPORATION Research Laboratories |
| 5th Author's Name | Akihiro KARASHIMA |
| 5th Author's Affiliation | Graduate School of Information Sciences, Tohoku University |
| 6th Author's Name | Mitsuyuki NAKAO |
| 6th Author's Affiliation | Graduate School of Information Sciences, Tohoku University |
| Date | 2009-11-13 |
| Paper # | MBE2009-69 |
| Volume (vol) | vol.109 |
| Number (no) | 279 |
| Page | pp.pp.- |
| #Pages | 6 |
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