| Presentation | 2000/10/12 Statistical analysis methods for Magnetoencephalography data Yoichiro Matsuno, Shigeyuki Ohba, Shin Ishii, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | MEG(Magnetoencephalography)is a non-aggressive method to measure brain activities. Because brain activities are likely to be extremely weak, noise removal is necessary. The decomposition of the measured magnetic field signals into signals evoked by brain activities, the terrestrial magnetism, the noise from the power supply, the device noise, and so on, can be done by the independent component analysis(ICA). Although MEG data often become high dimensional, there is a difficulty for ICA to deal with the high dimensional data. This report discusses dimension reduction methods as preprocesses of ICA. They are based on the probabilistic principal component analysis. As for the dimension reduction, we use the minimum description length(MDL)standard and the VBPCA(variational Bayes principal component analysis)method. These two methods are experimentally compared. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Independent component analysis / Principal component analysis / Magnetoencephalography / Variational Bayes method / Dimension reduction |
| Paper # | PRMU2000-94,NC2000-59 |
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| Conference Information | |
| Committee | PRMU |
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| Conference Date | 2000/10/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Pattern Recognition and Media Understanding (PRMU) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Statistical analysis methods for Magnetoencephalography data |
| Sub Title (in English) | |
| Keyword(1) | Independent component analysis |
| Keyword(2) | Principal component analysis |
| Keyword(3) | Magnetoencephalography |
| Keyword(4) | Variational Bayes method |
| Keyword(5) | Dimension reduction |
| 1st Author's Name | Yoichiro Matsuno |
| 1st Author's Affiliation | Nara Institute of Science and Technology() |
| 2nd Author's Name | Shigeyuki Ohba |
| 2nd Author's Affiliation | Nara Institute of Science and Technology |
| 3rd Author's Name | Shin Ishii |
| 3rd Author's Affiliation | Nara Institute of Science and Technology:CREST, Japan Science and Technology Corporation |
| Date | 2000/10/12 |
| Paper # | PRMU2000-94,NC2000-59 |
| Volume (vol) | vol.100 |
| Number (no) | 359 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |