講演抄録/キーワード |
講演名 |
2009-11-13 14:20
A Topographic Analysis of Human Scalp Alpha EEG by the Complex-valued ICA ○Zhan Zhang・Norihiro Katayama・Kazuma Watanabe(Tohoku Univ.)・Hiroto Nakatani(DENSO)・Akihiro Karashima・Mitsuyuki Nakao(Tohoku Univ.) MBE2009-69 |
抄録 |
(和) |
(まだ登録されていません) |
(英) |
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. |
キーワード |
(和) |
/ / / / / / / |
(英) |
Human electroencephalography (EEG) / Alpha rhythm / Time-frequency domain analysis / Independent component analysis / / / / |
文献情報 |
信学技報, vol. 109, no. 279, MBE2009-69, pp. 41-46, 2009年11月. |
資料番号 |
MBE2009-69 |
発行日 |
2009-11-05 (MBE) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
MBE2009-69 |