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Paper Abstract and Keywords
Presentation 2015-09-24 13:50
Effects of stimulus intensity on auditory-evoked responses and spontaneous activity in auditory pathway -- A study on objective estimation of the uncomfortable loudness level --
Atsuto Shukunami (Hiroshima City Univ.), Asuka Otsuka, (AIST), Shunsuke Ishimitsu (Hiroshima City Univ.), Seiji Nakagawa (AIST) MBE2015-27
Abstract (in Japanese) (See Japanese page) 
(in English) The relationships between the uncomfortable loudness level and auditory-evoked responses or spontaneous activity were investigated. As auditory-evoked responses, frequency following response, auditory brainstem response, middle latency response and slow vertex response were adopted. When the RMS magnitude of the frequency following response increased until around uncomfortable level, the response was saturated for low frequencies and rapidly increased for middle and high frequencies. The change rate of the N1m and latency on the auditory-evoked response was detected as minimum value below the uncomfortable level. Since the uncomfortable level was reacted to the frequency following response originated with brainstem in auditory pathway and the N1m response originated with the temporal lobe of the cerebral cortex in auditory pathway, it is possible to estimate the uncomfortable level with these response’s changes.
Keyword (in Japanese) (See Japanese page) 
(in English) Uncomfortable loudness level / Auditory-evoked response / Frequency following response / Auditory brainstem response / Middle latency response / Slow vertex response / Spontaneous activity /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 229, MBE2015-27, pp. 11-15, Sept. 2015.
Paper # MBE2015-27 
Date of Issue 2015-09-17 (MBE) 
ISSN Print edition: ISSN 0913-5685    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)
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Conference Information
Committee MBE  
Conference Date 2015-09-24 - 2015-09-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagaoka University of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MBE 
Conference Code 2015-09-MBE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Effects of stimulus intensity on auditory-evoked responses and spontaneous activity in auditory pathway 
Sub Title (in English) A study on objective estimation of the uncomfortable loudness level 
Keyword(1) Uncomfortable loudness level  
Keyword(2) Auditory-evoked response  
Keyword(3) Frequency following response  
Keyword(4) Auditory brainstem response  
Keyword(5) Middle latency response  
Keyword(6) Slow vertex response  
Keyword(7) Spontaneous activity  
Keyword(8)  
1st Author's Name Atsuto Shukunami  
1st Author's Affiliation Hiroshima City University (Hiroshima City Univ.)
2nd Author's Name Asuka Otsuka,  
2nd Author's Affiliation National Institute of Advanced Industrial Science and Technology (AIST)
3rd Author's Name Shunsuke Ishimitsu  
3rd Author's Affiliation Hiroshima City University (Hiroshima City Univ.)
4th Author's Name Seiji Nakagawa  
4th Author's Affiliation National Institute of Advanced Industrial Science and Technology (AIST)
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Speaker Author-3 
Date Time 2015-09-24 13:50:00 
Presentation Time 25 minutes 
Registration for MBE 
Paper # MBE2015-27 
Volume (vol) vol.115 
Number (no) no.229 
Page pp.11-15 
#Pages 5 
Date of Issue 2015-09-17 (MBE) 

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