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Paper Abstract and Keywords
Presentation 2019-07-19 10:25
Evaluation of Noise Immunity for EEG Source Localization by Matching Pursuit
Takayoshi Moridera, Takahiro Ito, Akimasa Hirata (NITech) EMT2019-34 MW2019-47 OPE2019-38 EST2019-36 MWP2019-34 Link to ES Tech. Rep. Archives: EMT2019-34 MW2019-47 OPE2019-38 EST2019-36 MWP2019-34
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, effective utilization of biological signals from the brain activity has been progressing in medical science and industrial applications. 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. The electric signals caused by this current can be measured as brain waves on scalp. Lead field matrix (LFM) is often used to estimate the brain activity. This is a projection matrix, whose elements are defined as the ratio of current density and observed potential. In this study, we use an LFM construction method based on scalar-potential finite-difference method and an estimation algorithm based on the matching pursuit method as an EEG localization method. By computer simulations, localization performance with regard to the number of simulations for constructing LFM is evaluated. The noise immunity for EEG source localization corresponding to the number of electrodes is also evaluated. From the results, the localization error is within about 1 cm when the number of simulations for constricting LFM is 2000.When we use international 10-10 method, degradation of estimation accuracy suppressed in 7 mm compared with noise-free environment even SNR is equal to 0 dB. We found that it shows good estimation performance in noisy environment by increasing the number of electrodes.
Keyword (in Japanese) (See Japanese page) 
(in English) Electroencephalography (EEG) / Scalar-potential finite-difference (SPFD) method / Matching pursuit / Lead field matrix / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 129, EST2019-36, pp. 161-166, July 2019.
Paper # EST2019-36 
Date of Issue 2019-07-11 (EMT, MW, OPE, EST, MWP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 EMT2019-34 MW2019-47 OPE2019-38 EST2019-36 MWP2019-34 Link to ES Tech. Rep. Archives: EMT2019-34 MW2019-47 OPE2019-38 EST2019-36 MWP2019-34

Conference Information
Conference Date 2019-07-18 - 2019-07-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Hakodate City Central Library 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Light wave & Electromagnetic Wave Workshop 
Paper Information
Registration To EST 
Conference Code 2019-07-MW-EST-OPE-MWP-EMT-EMT-THz 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of Noise Immunity for EEG Source Localization by Matching Pursuit 
Sub Title (in English)  
Keyword(1) Electroencephalography (EEG)  
Keyword(2) Scalar-potential finite-difference (SPFD) method  
Keyword(3) Matching pursuit  
Keyword(4) Lead field matrix  
1st Author's Name Takayoshi Moridera  
1st Author's Affiliation Nagoya Institute of Technology (NITech)
2nd Author's Name Takahiro Ito  
2nd Author's Affiliation Nagoya Institute of Technology (NITech)
3rd Author's Name Akimasa Hirata  
3rd Author's Affiliation Nagoya Institute of Technology (NITech)
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Date Time 2019-07-19 10:25:00 
Presentation Time 25 
Registration for EST 
Paper # IEICE-EMT2019-34,IEICE-MW2019-47,IEICE-OPE2019-38,IEICE-EST2019-36,IEICE-MWP2019-34 
Volume (vol) IEICE-119 
Number (no) no.126(EMT), no.127(MW), no.128(OPE), no.129(EST), no.130(MWP) 
Page pp.161-166 
#Pages IEICE-6 
Date of Issue IEICE-EMT-2019-07-11,IEICE-MW-2019-07-11,IEICE-OPE-2019-07-11,IEICE-EST-2019-07-11,IEICE-MWP-2019-07-11 

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