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Paper Abstract and Keywords
Presentation 2008-03-12 11:30
A Point-source Fidelity Solution of Bioelectromagnetic Inverse Problem
Yasushi Terazono (NICT), Ayumu Matani (Tokyo Univ.), Norio Fujimaki (NICT) NC2007-116
Abstract (in Japanese) (See Japanese page) 
(in English) Bioelectromagnetic inverse problem is one of the primal issues in the analysis of noninvasive bioelectromagnetic measurements like MEG and EEG. It is an estimation of current source distribution in the brain given measured data. We introduce an estimation method suitable for sparse sources. The method assures correct reconstruction of any point-source in vector fields. It is an extension of conventional weighted $\ell_1$-norm minimization to appropriately evaluate vector fields, and can be expressed as an second order cone programming. Correct reconstruction of point-sources with the proposed method is mathematically proved, and numerical comparison between the proposed and conventional method is shown.
Keyword (in Japanese) (See Japanese page) 
(in English) inverse problem / MEG / sparse / norm / vector field / point-source / fidelity /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 542, NC2007-116, pp. 25-30, March 2008.
Paper # NC2007-116 
Date of Issue 2008-03-05 (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 NC2007-116

Conference Information
Committee NC MBE  
Conference Date 2008-03-12 - 2008-03-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Tamagawa Univ 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To NC 
Conference Code 2008-03-NC-MBE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Point-source Fidelity Solution of Bioelectromagnetic Inverse Problem 
Sub Title (in English)  
Keyword(1) inverse problem  
Keyword(2) MEG  
Keyword(3) sparse  
Keyword(4) norm  
Keyword(5) vector field  
Keyword(6) point-source  
Keyword(7) fidelity  
Keyword(8)  
1st Author's Name Yasushi Terazono  
1st Author's Affiliation National Institute of Information and Communications Technology (NICT)
2nd Author's Name Ayumu Matani  
2nd Author's Affiliation The University of Tokyo (Tokyo Univ.)
3rd Author's Name Norio Fujimaki  
3rd Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Speaker Author-1 
Date Time 2008-03-12 11:30:00 
Presentation Time 20 minutes 
Registration for NC 
Paper # NC2007-116 
Volume (vol) vol.107 
Number (no) no.542 
Page pp.25-30 
#Pages 6 
Date of Issue 2008-03-05 (NC) 

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