Presentation | 2000/11/23 An analysis of the dynamics of epileptic EEG Daisuke SATO, Mitsuyuki NAKAO, Taisuke OTUKI, Norihiro KATAYAMA, Mitsuaki YAMAMOTO, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | We aimed to estimate epileptic foci and spreading processes of excitation. We assumed that the observed epileptic electroencephalogram(EEG)is a mixture of mutually uncorrelated signals, and analyzed it by applying a blind source separation(BBS). BBS was performed by the method using the covariance matrices with some time-lags. We showed spatial contribution of the separated sources by topogaph, and traced the time-evolution of source dynamics by connecting correlated sources in the adjacent data segments. As a result, it was found that the features of the time-evolution was shared by the epileptic activities studied. In addition, in the beginning of the epileptic activity there was a source showing the focus-related topograph. These findings provide important information to understand the nerual mechanism underlying epileptic activities. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Epilepsy / Blind source separation / time-evolution / topograph |
Paper # | MBE2000-93 |
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Conference Information | |
Committee | MBE |
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Conference Date | 2000/11/23(1days) |
Place (in Japanese) | (See Japanese page) |
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Topics (in Japanese) | (See Japanese page) |
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Paper Information | |
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) | An analysis of the dynamics of epileptic EEG |
Sub Title (in English) | |
Keyword(1) | Epilepsy |
Keyword(2) | Blind source separation |
Keyword(3) | time-evolution |
Keyword(4) | topograph |
1st Author's Name | Daisuke SATO |
1st Author's Affiliation | Graduate School of Information Sciences, Tohoku University() |
2nd Author's Name | Mitsuyuki NAKAO |
2nd Author's Affiliation | Graduate School of Information Sciences, Tohoku University |
3rd Author's Name | Taisuke OTUKI |
3rd Author's Affiliation | National Center Hospital for Metal, Nervous and Muscle Disorders, NCNP |
4th Author's Name | Norihiro KATAYAMA |
4th Author's Affiliation | Graduate School of Information Sciences, Tohoku University |
5th Author's Name | Mitsuaki YAMAMOTO |
5th Author's Affiliation | Graduate School of Information Sciences, Tohoku University |
Date | 2000/11/23 |
Paper # | MBE2000-93 |
Volume (vol) | vol.100 |
Number (no) | 478 |
Page | pp.pp.- |
#Pages | 7 |
Date of Issue |