| Presentation | 2005/10/11 A method for removal of eye movement artifacts from MEG : Simultaneous current source estimation of eyes and cortical activities from MEG and EOG data Yusuke FUJIWARA, Masaaki SATO, Okito YAMASHITA, Taku YOSHIOKA, Dai KAWAWAKI, Tomohiro SHIBATA, Kenji DOYA, Keisuke TOYAMA, Mitsuo KAWATO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The magnetic fields generated by eye movements are major artifacts in MEG measurement. This report proposes a method for removal of eye movement artifact from MEG data by EOG data. In order to use EOG, one needs a EOG forward model that describes the transformation from eye current sources to EOG. We show that an EOG forward model and current sources can be simultaneously calculated by the hierarchical Bayesian estimation. A simulation experiment confirmed that the estimation of eye current sources can be improved. We further demonstrate that we can remove eye artifacts from real MEG data during smooth-pursuit eye movements. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MEG / EOG / eye artifact / current source estimation / inverse problem |
| Paper # | NC2005-53 |
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| Conference Information | |
| Committee | NC |
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| Conference Date | 2005/10/11(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 | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A method for removal of eye movement artifacts from MEG : Simultaneous current source estimation of eyes and cortical activities from MEG and EOG data |
| Sub Title (in English) | |
| Keyword(1) | MEG |
| Keyword(2) | EOG |
| Keyword(3) | eye artifact |
| Keyword(4) | current source estimation |
| Keyword(5) | inverse problem |
| 1st Author's Name | Yusuke FUJIWARA |
| 1st Author's Affiliation | Nara Institute of Science and Technology:Computational Neuroscience Labs, ATR() |
| 2nd Author's Name | Masaaki SATO |
| 2nd Author's Affiliation | Computational Neuroscience Labs, ATR |
| 3rd Author's Name | Okito YAMASHITA |
| 3rd Author's Affiliation | Computational Neuroscience Labs, ATR |
| 4th Author's Name | Taku YOSHIOKA |
| 4th Author's Affiliation | Computational Neuroscience Labs, ATR |
| 5th Author's Name | Dai KAWAWAKI |
| 5th Author's Affiliation | Nara Institute of Science and Technology:Computational Neuroscience Labs, ATR |
| 6th Author's Name | Tomohiro SHIBATA |
| 6th Author's Affiliation | Nara Institute of Science and Technology:Computational Neuroscience Labs, ATR |
| 7th Author's Name | Kenji DOYA |
| 7th Author's Affiliation | Nara Institute of Science and Technology:Computational Neuroscience Labs, ATR:Okinawa Institute of Science and Technology |
| 8th Author's Name | Keisuke TOYAMA |
| 8th Author's Affiliation | Technology Research Lab. Shimadzu Co. |
| 9th Author's Name | Mitsuo KAWATO |
| 9th Author's Affiliation | Nara Institute of Science and Technology:Computational Neuroscience Labs, ATR |
| Date | 2005/10/11 |
| Paper # | NC2005-53 |
| Volume (vol) | vol.105 |
| Number (no) | 342 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |