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| Paper Abstract and Keywords | ||
| Presentation | 2019-03-14 13:30 Beamforming for Brain-Activity Reconstruction under Time-Correlated Interference Takehiro Kono (Keio Univ.), Masahiro Yukawa (Keio Univ./Riken), Tomasz Piotrowski (Nicolaus Copernicus Univ./Interdisciplinary Center for Modern Te)  EA2018-116 SIP2018-122 SP2018-78 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We consider the problem of reconstruction of brain activity from non-invasive electroencephalography (EEG) signals using beamforming (spatial filtering). An intrinsic gap between the output variance and the mean squared errors is highlighted that occurs due to the presence of interfering activities correlated with the desired activity. We propose a beamformer imposing a quadratic constraint that bounds the total power of interference leakage together with the distortionless constraint for reducing this gap without amplifying the noise. The proposed beamformer can be implemented efficiently by the adaptive filtering algorithm. Numerical examples show the clear advantages of the proposed beamformer over the minimum-variance distortionless response (MVDR) and nulling beamformers. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Electroencephalography / inverse ploblems / relaxed zero forcing / MVDR beamformer / nulling beamformer / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 118, no. 496, SIP2018-122, pp. 99-104, March 2019. | |
| Paper # | SIP2018-122 | |
| Date of Issue | 2019-03-07 (EA, SIP, SP) | |
| 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 | EA2018-116 SIP2018-122 SP2018-78 |
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| Conference Information | |
| Committee | EA SIP SP |
| Conference Date | 2019-03-14 - 2019-03-15 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | i+Land nagasaki (Nagasaki-shi) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Engineering/Electro Acoustics, Signal Processing, Speech, and Related Topics |
| Paper Information | |
| Registration To | SIP |
| Conference Code | 2019-03-EA-SIP-SP |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Beamforming for Brain-Activity Reconstruction under Time-Correlated Interference |
| Sub Title (in English) | |
| Keyword(1) | Electroencephalography |
| Keyword(2) | inverse ploblems |
| Keyword(3) | relaxed zero forcing |
| Keyword(4) | MVDR beamformer |
| Keyword(5) | nulling beamformer |
| Keyword(6) | |
| Keyword(7) | |
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| 1st Author's Name | Takehiro Kono |
| 1st Author's Affiliation | Keio University (Keio Univ.) |
| 2nd Author's Name | Masahiro Yukawa |
| 2nd Author's Affiliation | Keio University/Riken (Keio Univ./Riken) |
| 3rd Author's Name | Tomasz Piotrowski |
| 3rd Author's Affiliation | Nicolaus Copernicus University/Interdisciplinary Center for Modern Technologies (Nicolaus Copernicus Univ./Interdisciplinary Center for Modern Te) |
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| Speaker | Author-1 |
| Date Time | 2019-03-14 13:30:00 |
| Presentation Time | 90 minutes |
| Registration for | SIP |
| Paper # | EA2018-116, SIP2018-122, SP2018-78 |
| Volume (vol) | vol.118 |
| Number (no) | no.495(EA), no.496(SIP), no.497(SP) |
| Page | pp.99-104 |
| #Pages | 6 |
| Date of Issue | 2019-03-07 (EA, SIP, SP) |
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