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Paper Abstract and Keywords
Presentation 2007-10-19 14:40
Chaos Analyses of Fluctuation in Heartbeats and the Inverse Problem of the Tquivalent Electric Dipole with Ecg Dynamics based on Finite Element Method
Katsuyuki Murakami (Nagaoka Univ. of Tech.), Hideyuki Usui (eTRUST), Masahiro Nakagawa (Nagaoka Univ. of Tech.) CAS2007-61 NLP2007-89
Abstract (in Japanese) (See Japanese page) 
(in English) In this research, we estimated the electric dipole dynamics by means of solving an inverse problem with
respect to spatio-temporal patterns of activity in the human heart. Finite Element Method (FEM) is employed
to find the body surface potential generated from the predicted dipole; the dipole location in which the computed
potential fits the measured potential is calculated by using Genetic Algorithm (GA). The experimental results
show that the estimated dipole location and rotation are found to move clockwise and rotate counterclockwise,
respectively. In addition, by using the Lyapunov analysis the coordinate of the dipole was confirmed to have chaos
Keyword (in Japanese) (See Japanese page) 
(in English) ECG / Finite Element Method / Genetic Algorithm / ECG Inverse Problem / Lyapunov analysis / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 267, NLP2007-89, pp. 53-58, Oct. 2007.
Paper # NLP2007-89 
Date of Issue 2007-10-12 (CAS, NLP) 
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)
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Conference Information
Committee CAS NLP  
Conference Date 2007-10-18 - 2007-10-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Musashi Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To NLP 
Conference Code 2007-10-CAS-NLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Chaos Analyses of Fluctuation in Heartbeats and the Inverse Problem of the Tquivalent Electric Dipole with Ecg Dynamics based on Finite Element Method 
Sub Title (in English)  
Keyword(1) ECG  
Keyword(2) Finite Element Method  
Keyword(3) Genetic Algorithm  
Keyword(4) ECG Inverse Problem  
Keyword(5) Lyapunov analysis  
1st Author's Name Katsuyuki Murakami  
1st Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
2nd Author's Name Hideyuki Usui  
2nd Author's Affiliation Corporation eTRUST (eTRUST)
3rd Author's Name Masahiro Nakagawa  
3rd Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
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Date Time 2007-10-19 14:40:00 
Presentation Time 20 
Registration for NLP 
Paper # IEICE-CAS2007-61,IEICE-NLP2007-89 
Volume (vol) IEICE-107 
Number (no) no.265(CAS), no.267(NLP) 
Page pp.53-58 
#Pages IEICE-6 
Date of Issue IEICE-CAS-2007-10-12,IEICE-NLP-2007-10-12 

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