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Paper Abstract and Keywords
Presentation
Developmental study on vocal-audio feedback control of speech production
Atsuko Gunji (NCNP), Sachiko Koyama (Hokkaido Univ), Akira Toyomura (JST RISTEX), Akitoshi Ogawa (RIKEN), Atsushi Senju (Birkbeck College), Yoshikuni Tojo (Ibaraki Univ), Makiko Kaga (NCNP) SP2008-39
Abstract (in Japanese) (See Japanese page) 
(in English) To investigate speech acquisition, we examined auditory feedback system for self-produced speech in the high-functioning children with autism, age-matched typically developing children and healthy adults by measuring the Lombard effect which describes the tendency for speakers to increase pitch, intensity, and duration in the presence of noise.. The subjects were instructed to name 50 pictures of objects aloud with and without masking noise through a headset. The subjects’ speech loudness was significantly greater in the typically-developing children than in the autistic children. On the other hand, the f0 variance by masking was significantly greater in the autistic children than in the typically developing children. The present findings suggest deficits in auditory feedback system and difficulty in motor control in autistic children, which could be one of the reasons for their unique speech development.
Keyword (in Japanese) (See Japanese page) 
(in English) auditory feedback / speech / autism / Pervasive Developmental Disorders (PDD) / children / Lombard effect / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 116, SP2008-39, pp. 109-113, June 2008.
Paper # SP2008-39 
Date of Issue  
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)
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Conference Information
Committee SP  
Conference Date 2008-06-27 - 2008-06-28 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Speech Production, Speech Perception, Hearing and Speech, etc. 
Paper Information
Registration To SP 
Conference Code 2008-06-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Developmental study on vocal-audio feedback control of speech production 
Sub Title (in English)  
Keyword(1) auditory feedback  
Keyword(2) speech  
Keyword(3) autism  
Keyword(4) Pervasive Developmental Disorders (PDD)  
Keyword(5) children  
Keyword(6) Lombard effect  
Keyword(7)  
Keyword(8)  
1st Author's Name Atsuko Gunji  
1st Author's Affiliation National Institute of Mental Health, National Center of Neurology and Psychiatry (NCNP)
2nd Author's Name Sachiko Koyama  
2nd Author's Affiliation Research Institute for Electronic Science, Hokkaido University (Hokkaido Univ)
3rd Author's Name Akira Toyomura  
3rd Author's Affiliation JST RISTEX (JST RISTEX)
4th Author's Name Akitoshi Ogawa  
4th Author's Affiliation Brain Science Institute (RIKEN)
5th Author's Name Atsushi Senju  
5th Author's Affiliation Centre for Brain and Cognitive Development, Birkbeck College, University of London (Birkbeck College)
6th Author's Name Yoshikuni Tojo  
6th Author's Affiliation Ibaraki University (Ibaraki Univ)
7th Author's Name Makiko Kaga  
7th Author's Affiliation National Institute of Mental Health, National Center of Neurology and Psychiatry (NCNP)
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Date Time  
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Registration for SP 
Paper # SP2008-39 
Volume (vol) vol.108 
Number (no) no.116 
Page pp.109-113 
#Pages 5 
Date of Issue  

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