| Presentation | 2023-03-11 Cognitive deficits and functional brain bases of Japanese dyslexia Akiko Sugimoto, Mitsuyo Shibasaki, Koji Yoshida, Hikaru Sugimoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | Japanese dyslexia / experiments with fNIRS / phonological and visual attention span deficits / functional brain bases |
| Paper # | TL2022-35 |
| Date of Issue | 2023-03-03 (TL) |
| Conference Information | |
| Committee | TL |
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| Conference Date | 2023/3/10(2days) |
| 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 |
| Chair | Miwa Morishita(Kobe Gakuin Univ.) |
| Vice Chair | Yasushi Tsubota(Kyoto Inst. of Tech.) / Akinori Takada(Ferris Univ.) |
| Secretary | Yasushi Tsubota(Osaka Electro-Comm. Univ.) / Akinori Takada(Miidas) |
| Assistant | Hiroaki Yamada(Tokyo Inst. of Tech) / Akio Shimogori(Hakodate-ct) |
| Paper Information | |
| Registration To | Technical Committee on Thought and Language |
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| Language | JPN |
| 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 |
| Keyword(5) | |
| 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) |
| Date | 2023-03-11 |
| Paper # | TL2022-35 |
| Volume (vol) | vol.122 |
| Number (no) | TL-419 |
| Page | pp.pp.6-11(TL), |
| #Pages | 6 |
| Date of Issue | 2023-03-03 (TL) |