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  1. Kawasaki journal of medical welfare
  2. Vol.16
  3. No.1

Electroencephalogram Analysis Regarding Visual Information Processing in a Grapheme-color Synesthete

https://doi.org/10.15112/00005024
https://doi.org/10.15112/00005024
bf31bb24-ad82-46f6-b1c8-54cc346986a8
名前 / ファイル ライセンス アクション
09-17_YAMASHITA.pdf PDF (887.8 kB)
Item type 紀要論文(ELS) / Departmental Bulletin Paper(1)
公開日 2010-01-01
タイトル
タイトル Electroencephalogram Analysis Regarding Visual Information Processing in a Grapheme-color Synesthete
言語 en
言語
言語 eng
キーワード
言語 en
主題Scheme Other
主題 synesthesia
キーワード
言語 en
主題Scheme Other
主題 color
キーワード
言語 en
主題Scheme Other
主題 electroencephalogram
キーワード
言語 en
主題Scheme Other
主題 visual information processing
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ departmental bulletin paper
ID登録
ID登録 10.15112/00005024
ID登録タイプ JaLC
ページ属性
内容記述タイプ Other
内容記述 P(論文)
著者名(英) Yamashita, Tsutomu

× Yamashita, Tsutomu

en Yamashita, Tsutomu

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Hikosaka, Kazuo

× Hikosaka, Kazuo

en Hikosaka, Kazuo

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Nanba, Tetsuko

× Nanba, Tetsuko

en Nanba, Tetsuko

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Tabuchi, Akio

× Tabuchi, Akio

en Tabuchi, Akio

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著者所属(英)
en
Department of Sensory Science, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare
著者所属(英)
en
Department of Sensory Science, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare
著者所属(英)
en
Department of Sensory Science, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare
著者所属(英)
en
Department of Sensory Science, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare
抄録(英)
en
In order to explore characteristics of visual information processing in grapheme-color synesthesia, we examined behavior (response correctness and reaction time) and temporal activities of EEG during the performance of two kinds of "embedded shape tasks" in one synesthete and 16 nonsynesthetic subjects. We used three black capital letters, including one letter which a synesthetic subject perceived in color. The target grapheme was made of a letter which a synesthetic subject perceived in color (TASK1), and one that was not perceived in color (TASK2). There was a significant difference in reaction time between the two tasks. Measuring the difference in amplitude of EEG activity at P4 between the two tasks, biphasic activity change was observed. At 232.5 ms in the late phase, the bilateral occipital and parietal lobes, and the left frontal lobe were activated. These results suggest that biphasic activity change is related to different visual information processing in synesthesia; the early phase is related to directing attention to a shape with color, while the late phase to the recognition of a shape with color. It is also suggested that activated areas of the brain in the late phase function separately in causing grapheme-color synesthesia.
書誌情報 en : Kawasaki journal of medical welfare

巻 16, 号 1, p. 9-17, 発行日 2010
公開者
出版者 川崎医療福祉学会
雑誌書誌ID
収録物識別子タイプ NCID
収録物識別子 AA11108172
ISSN
収録物識別子タイプ PISSN
収録物識別子 1341-5077
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