| Presentation | 2005/3/18 Synchronized Activities during Perceptual alternation in Magnetoencephalography Tetsuto MINAMI, Shiro YANO, Tsutomu MURATA, Norio FUJIMAKI, Ryoji SUZUKI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Perceptual rivalry such as ambiguous figure perception and binocular rivalry reflects the flexibility of our brain, because it produces fluctuating perception though an unchanging stimulus. Recent functional neuro-magnetic resonance imaging (fMRI) studies suggested that multiple cortical areas are associated with perceptual alternation in ambiguous figure perception. However, temporal relationships among these areas in perceptual alternation have not been elucidated. In this study, we conducted phase synchronization analyses of MEG signals obtained from subjects' whole head during ambiguous figure perception (bistabele apparent motion). As results, we detected significant phase coherencies of MEG signals among the anterior channels, between the anterior and the posterior channels, and among the posterior channels, in several hundred millisecond advance of subjects' reports of perceptual alternation. These results suggest that synchronized activities among/within cortical areas play important roles in perceptual alternation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MEG / perceptual rivalry / phase synchronization / gamma-band synchronization / bistabele apparent motion |
| Paper # | HIP2004-100 |
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| Conference Information | |
| Committee | HIP |
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| Conference Date | 2005/3/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Human Information Processing (HIP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Synchronized Activities during Perceptual alternation in Magnetoencephalography |
| Sub Title (in English) | |
| Keyword(1) | MEG |
| Keyword(2) | perceptual rivalry |
| Keyword(3) | phase synchronization |
| Keyword(4) | gamma-band synchronization |
| Keyword(5) | bistabele apparent motion |
| 1st Author's Name | Tetsuto MINAMI |
| 1st Author's Affiliation | National Institute of Information and Communications Technology() |
| 2nd Author's Name | Shiro YANO |
| 2nd Author's Affiliation | Osaka University:National Institute of Information and Communications Technology |
| 3rd Author's Name | Tsutomu MURATA |
| 3rd Author's Affiliation | National Institute of Information and Communications Technology |
| 4th Author's Name | Norio FUJIMAKI |
| 4th Author's Affiliation | National Institute of Information and Communications Technology |
| 5th Author's Name | Ryoji SUZUKI |
| 5th Author's Affiliation | National Institute of Information and Communications Technology:Kanazawa Institute of Technology |
| Date | 2005/3/18 |
| Paper # | HIP2004-100 |
| Volume (vol) | vol.104 |
| Number (no) | 747 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |