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Paper Abstract and Keywords
Presentation 2016-12-13 09:30
Frequency singularity in nonlinear heart rate dynamics
Junichiro Hayano, Emi Yuda, Hiroki Ogasawara, Yutaka Yoshida (Nagoya City Univ.) NLP2016-92
Abstract (in Japanese) (See Japanese page) 
(in English) In healthy humans, 24-hr fluctuation of heart rate shows down-sloping linear log-log spectrum with a slope of -1, indicating that human heart beats have 1/f fluctuation property. Although heart beats during atrial fibrillation show horizontal log-log spectrum indicating white noise in high frequency band >0.005± 0.002 Hz, in frequency band below this frequency they also show down-sloping linear log-log spectrum with a slope close to -1. Even in healthy people, particularly young subjects, log-log spectrum has an inflection point and bends to upper direction above and below this point. This bending recuses with aging as a butterfly spreads wings. These observations indicate the presence of singularities in heart beat fluctuation at periods of around 200 sec and 30 min.
Keyword (in Japanese) (See Japanese page) 
(in English) heart rate variability / log-log spectrum / 1/f fluctuation / singularity / / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 353, NLP2016-92, pp. 45-48, Dec. 2016.
Paper # NLP2016-92 
Date of Issue 2016-12-05 (NLP) 
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 NLP2016-92

Conference Information
Committee NLP  
Conference Date 2016-12-12 - 2016-12-13 
Place (in Japanese) (See Japanese page) 
Place (in English) Chukyo Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To NLP 
Conference Code 2016-12-NLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Frequency singularity in nonlinear heart rate dynamics 
Sub Title (in English)  
Keyword(1) heart rate variability  
Keyword(2) log-log spectrum  
Keyword(3) 1/f fluctuation  
Keyword(4) singularity  
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1st Author's Name Junichiro Hayano  
1st Author's Affiliation Nagoya City University (Nagoya City Univ.)
2nd Author's Name Emi Yuda  
2nd Author's Affiliation Nagoya City University (Nagoya City Univ.)
3rd Author's Name Hiroki Ogasawara  
3rd Author's Affiliation Nagoya City University (Nagoya City Univ.)
4th Author's Name Yutaka Yoshida  
4th Author's Affiliation Nagoya City University (Nagoya City Univ.)
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Speaker Author-1 
Date Time 2016-12-13 09:30:00 
Presentation Time 25 minutes 
Registration for NLP 
Paper # NLP2016-92 
Volume (vol) vol.116 
Number (no) no.353 
Page pp.45-48 
#Pages 4 
Date of Issue 2016-12-05 (NLP) 

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