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Paper Abstract and Keywords
Presentation 2014-12-02 11:15
Inter-intra modal perceptual grouping can alter the perceived duration of visual stimuli
Riku Asaoka, Jiro Gyoba (Tohoku Univ.) HIP2014-75
Abstract (in Japanese) (See Japanese page) 
(in English) Previous studies showed that the perceived duration of visual stimuli could be strongly influenced by auditory stimuli presented simultaneously. The present study examined the effects of the sounds that were not simultaneously presented with visual stimuli on visual time perception. In Experiment1, the participants were presented by either only a visual stimulus or one sandwiched by two task irrelevant auditory stimuli, and asked to classify the presentation duration of the visual stimuli into four categories. As a result, two outer sounds were shown to lengthen and shorten the perceived duration, depending on interval between the both stimuli. In Experiment 2, in order to investigate the effects of auditory grouping on these lengthening and shortening effects, three sounds were presented before and after the visual stimulus. The results indicated that auditory grouping could diminish or reduce the effects lengthening and shortening visual durations by sounds. Taken together, these findings suggest that the distortion of visual time perception by sounds can be induced by audio-visual integration, and that intra-inter modal perceptual grouping is an important factor that can alter time perception.
Keyword (in Japanese) (See Japanese page) 
(in English) Time perception / Audio-visual interaction / Perceptual grouping / / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 347, HIP2014-75, pp. 41-46, Dec. 2014.
Paper # HIP2014-75 
Date of Issue 2014-11-24 (HIP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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 HIP ITE-CE ITE-HI  
Conference Date 2014-12-01 - 2014-12-02 
Place (in Japanese) (See Japanese page) 
Place (in English) Research Institute of Electrical Communication, Tohoku University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) multimodal, visual perception, etc. 
Paper Information
Registration To HIP 
Conference Code 2014-12-HIP-CE-HI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Inter-intra modal perceptual grouping can alter the perceived duration of visual stimuli 
Sub Title (in English)  
Keyword(1) Time perception  
Keyword(2) Audio-visual interaction  
Keyword(3) Perceptual grouping  
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1st Author's Name Riku Asaoka  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Jiro Gyoba  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2014-12-02 11:15:00 
Presentation Time 30 minutes 
Registration for HIP 
Paper # HIP2014-75 
Volume (vol) vol.114 
Number (no) no.347 
Page pp.41-46 
#Pages
Date of Issue 2014-11-24 (HIP) 


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