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Paper Abstract and Keywords
Presentation 2021-11-05 14:05
Alzheimer Dementia Detection Based on Unstable Sinusoidal Component Extracted from Circadian Rhythm of Heart Rate by Trigonometric Approximation
Naoya Matsuda, Iko Nakari, Keiki Takadama (UEC) MICT2021-37 MI2021-35
Abstract (in Japanese) (See Japanese page) 
(in English) We have proposed two Alzheimer dementia (AD) detection methods to establish a methodology using non-contact mattress sensors. In this paper, we propose a method, combining our two conventional methods to complete each other and verify the effectiveness.
Specifically, for ADDCRARaH and ADDUCRRaH, which focus on the AD's circadian rhythm disorder characteristics of heartrate, the base of the method is switched the ratio of sine/cosine instability to the amplitude ratio by the stability of sine wave.
In subjects experiments of one AD patient, three healthy elderly, ten healthy middle-aged, and eight healthy young people, the accuracies were all in about 80%$sim$100%, equivalent to or better than the conventional methods.
Keyword (in Japanese) (See Japanese page) 
(in English) Alzheimer dementia / non-contact sensor / circadian rhythm and its disorder / heartrate / amplitude / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 230, MICT2021-37, pp. 43-48, Nov. 2021.
Paper # MICT2021-37 
Date of Issue 2021-10-29 (MICT, MI) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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 MICT2021-37 MI2021-35

Conference Information
Committee MI MICT  
Conference Date 2021-11-05 - 2021-11-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Medical imaging technology, healthcare and medical information communication technology 
Paper Information
Registration To MICT 
Conference Code 2021-11-MI-MICT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Alzheimer Dementia Detection Based on Unstable Sinusoidal Component Extracted from Circadian Rhythm of Heart Rate by Trigonometric Approximation 
Sub Title (in English)  
Keyword(1) Alzheimer dementia  
Keyword(2) non-contact sensor  
Keyword(3) circadian rhythm and its disorder  
Keyword(4) heartrate  
Keyword(5) amplitude  
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Keyword(8)  
1st Author's Name Naoya Matsuda  
1st Author's Affiliation University of Electro-Communications (UEC)
2nd Author's Name Iko Nakari  
2nd Author's Affiliation University of Electro-Communications (UEC)
3rd Author's Name Keiki Takadama  
3rd Author's Affiliation University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2021-11-05 14:05:00 
Presentation Time 20 minutes 
Registration for MICT 
Paper # MICT2021-37, MI2021-35 
Volume (vol) vol.121 
Number (no) no.230(MICT), no.231(MI) 
Page pp.43-48 
#Pages
Date of Issue 2021-10-29 (MICT, MI) 


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