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| Presentation | 2010-03-10 09:00 Inference of Alpha Rhythm Phase and Amplitude Using Belief Propagation on Markov Random Field Model Yasushi Naruse (NICT), Ken Takiyama (Univ. of Tokyo.), Masato Okada (Univ. of Tokyo/RIKEN), Tsutomu Murata (NICT)  NC2009-116 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The alpha rhythm is a major component of spontaneous electroencephalographic data. We develop a novel method that can estimate instantaneous phases and amplitudes of the alpha rhythm with a high degree of accuracy by modeling the alpha rhythm phase and amplitude on Markov random field (MRF) models. Using the belief propagation technique, we construct an algorithm that can estimate instantaneous phases and amplitudes and calculate a marginal likelihood. Maximizing the marginal likelihood enables us to estimate hyperparameters based on the type 2 maximum likelihood. Comparison of estimation accuracy of the instantaneous phases and amplitudes indicates that our model has a higher ability of the instantaneous phases and amplitudes estimation than the Hilbert transform, which have been commonly used to estimate them. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Markov random field model / Belief propagation / Electroencephalography / Alpha rhythm / Phase / Amplitude / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 461, NC2009-116, pp. 167-172, March 2010. | |
| Paper # | NC2009-116 | |
| Date of Issue | 2010-03-02 (NC) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | NC2009-116 |
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| Conference Information | |
| Committee | NC MBE |
| Conference Date | 2010-03-09 - 2010-03-11 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tamagawa University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Paper Information | |
| Registration To | NC |
| Conference Code | 2010-03-NC-MBE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Inference of Alpha Rhythm Phase and Amplitude Using Belief Propagation on Markov Random Field Model |
| Sub Title (in English) | |
| Keyword(1) | Markov random field model |
| Keyword(2) | Belief propagation |
| Keyword(3) | Electroencephalography |
| Keyword(4) | Alpha rhythm |
| Keyword(5) | Phase |
| Keyword(6) | Amplitude |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yasushi Naruse |
| 1st Author's Affiliation | National Institute of Information and Communications Technology (NICT) |
| 2nd Author's Name | Ken Takiyama |
| 2nd Author's Affiliation | The University of Tokyo (Univ. of Tokyo.) |
| 3rd Author's Name | Masato Okada |
| 3rd Author's Affiliation | The University of Tokyo/RIKEN (Univ. of Tokyo/RIKEN) |
| 4th Author's Name | Tsutomu Murata |
| 4th Author's Affiliation | National Institute of Information and Communications Technology (NICT) |
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| Speaker | Author-1 |
| Date Time | 2010-03-10 09:00:00 |
| Presentation Time | 25 minutes |
| Registration for | NC |
| Paper # | NC2009-116 |
| Volume (vol) | vol.109 |
| Number (no) | no.461 |
| Page | pp.167-172 |
| #Pages | 6 |
| Date of Issue | 2010-03-02 (NC) |
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