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Paper Abstract and Keywords
Presentation 2023-03-11 10:30
Cognitive deficits and functional brain bases of Japanese dyslexia -- phonological and visual impairments --
Akiko Sugimoto, Mitsuyo Shibasaki (Meisei Univ.), Koji Yoshida (Hijiyama Univ.), Hikaru Sugimoto (Univ. of Tokyo) TL2022-35
Abstract (in Japanese) (See Japanese page) 
(in English) This study examined the cognitive disorders and the functional brain bases behind them in Japanese dyslexia through experiments using fNIRS with Japanese dyslexic and healthy adults. The analysis results of behavioral data suggested that dyslexia in Japanese possess phonological and visual attention span deficits, which are the same or similar as dyslexia in languages with alphabetical writing systems. In addition, the fNIRS data analysis results showed that a visual attention span deficit in Japanese dyslexia is related to decreased activation of the visual cortex, the left Broca’s area, the left dorsolateral prefrontal cortex, and the somatic association area. It was also indicated that in the recognition of already known “hiragana” and “kanji” characters, Japanese dyslexia showed decreased activation in the dorsal stream of the left hemisphere, whereas in the recognition of new “symbols,” they showed decreased activation of the same stream in the right hemisphere. A phonological disorder in Japanese dyslexia turned out to be mainly related to the left temporo-parietal junction.
Keyword (in Japanese) (See Japanese page) 
(in English) Japanese dyslexia / experiments with fNIRS / phonological and visual attention span deficits / functional brain bases / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 419, TL2022-35, pp. 6-11, March 2023.
Paper # TL2022-35 
Date of Issue 2023-03-03 (TL) 
ISSN 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 TL2022-35

Conference Information
Committee TL  
Conference Date 2023-03-10 - 2023-03-11 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Theme 1:Interpretation, Translation, and Hospitality Communication, Theme 2:Linguistic Landscape, Learning Language, Language Contact, Abduction of Meaning, Theme 3:Sharing and Manipulation of Presupposition, Narrative, Metaverse 
Paper Information
Registration To TL 
Conference Code 2023-03-TL 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Cognitive deficits and functional brain bases of Japanese dyslexia 
Sub Title (in English) phonological and visual impairments 
Keyword(1) Japanese dyslexia  
Keyword(2) experiments with fNIRS  
Keyword(3) phonological and visual attention span deficits  
Keyword(4) functional brain bases  
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1st Author's Name Akiko Sugimoto  
1st Author's Affiliation Meisei University (Meisei Univ.)
2nd Author's Name Mitsuyo Shibasaki  
2nd Author's Affiliation Meisei University (Meisei Univ.)
3rd Author's Name Koji Yoshida  
3rd Author's Affiliation Hijiyama University (Hijiyama Univ.)
4th Author's Name Hikaru Sugimoto  
4th Author's Affiliation The University of Tokyo (Univ. of Tokyo)
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Speaker Author-1 
Date Time 2023-03-11 10:30:00 
Presentation Time 30 minutes 
Registration for TL 
Paper # TL2022-35 
Volume (vol) vol.122 
Number (no) no.419 
Page pp.6-11 
#Pages 6 
Date of Issue 2023-03-03 (TL) 

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