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Paper Abstract and Keywords
Presentation 2025-10-24 09:00
Accuracy Evaluation of Source Location Estimation for Somatosensory Evoked Potentials Elicited with Upper Limb Stimulation
Yuki Tada, Sachiko Kodera (NITech), Masaki Fukunaga (NIPS), Toshiaki Wasaka, Akimasa Hirata (NITech) EMCJ2025-53 MW2025-139 EST2025-66
Abstract (in Japanese) (See Japanese page) 
(in English) The brain activity can be considered as circuit network activity in the gray matter, and a small current is then generated in the corresponding area. Electroencephalogram (EEG) measures voltage changes on the scalp surface and is used for preoperative diagnosis of brain disease. However, EEG-based source estimation has lower spatial resolution compared with magnetoencephalography (MEG), improving the accuracy of brain activity estimation is required. We have developed the source localization method for EEG, using a high-resolution human head model constructed from individual MR images. In this paper, we numerically evaluated the accuracy of brain activity estimation in response to stimulation of the median nerve, the ulnar nerve, and the fingers, and numerically evaluated the source localization accuracy to investigate the achievable spatial resolution.
Keyword (in Japanese) (See Japanese page) 
(in English) Electroencephalography (EEG) / Scalar-potential finite-difference (SPFD) method / Orthogonal Matching pursuit / / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 210, EST2025-66, pp. 77-82, Oct. 2025.
Paper # EST2025-66 
Date of Issue 2025-10-16 (EMCJ, MW, EST) 
ISSN Online edition: ISSN 2432-6380
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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 EMCJ2025-53 MW2025-139 EST2025-66

Conference Information
Committee EMCJ MW EST IEE-EMC  
Conference Date 2025-10-23 - 2025-10-24 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EST 
Conference Code 2025-10-EMCJ-MW-EST-EMC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Accuracy Evaluation of Source Location Estimation for Somatosensory Evoked Potentials Elicited with Upper Limb Stimulation 
Sub Title (in English)  
Keyword(1) Electroencephalography (EEG)  
Keyword(2) Scalar-potential finite-difference (SPFD) method  
Keyword(3) Orthogonal Matching pursuit  
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Keyword(5)  
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1st Author's Name Yuki Tada  
1st Author's Affiliation Nagoya Institute of Technology (NITech)
2nd Author's Name Sachiko Kodera  
2nd Author's Affiliation Nagoya Institute of Technology (NITech)
3rd Author's Name Masaki Fukunaga  
3rd Author's Affiliation National Institute for Physiological Sciences (NIPS)
4th Author's Name Toshiaki Wasaka  
4th Author's Affiliation Nagoya Institute of Technology (NITech)
5th Author's Name Akimasa Hirata  
5th Author's Affiliation Nagoya Institute of Technology (NITech)
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Speaker Author-1 
Date Time 2025-10-24 09:00:00 
Presentation Time 25 minutes 
Registration for EST 
Paper # EMCJ2025-53, MW2025-139, EST2025-66 
Volume (vol) vol.125 
Number (no) no.208(EMCJ), no.209(MW), no.210(EST) 
Page pp.77-82 
#Pages 6 
Date of Issue 2025-10-16 (EMCJ, MW, EST) 

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