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タイトル: Neural mechanisms underlying conscious and unconscious attentional shifts triggered by eye gaze.
著者: Sato, Wataru
Kochiyama, Takanori
Uono, Shota
Toichi, Motomi
著者名の別形: 佐藤, 弥
キーワード: Amygdala
Attentional shift
Conscious awareness
Eye gaze
fMRI
Subliminal presentation
発行日: 4-Sep-2015
出版者: Elsevier
誌名: NeuroImage
巻: 124
号: Part A
開始ページ: 118
終了ページ: 126
抄録: Behavioral studies have shown that eye gaze triggers attentional shifts both with and without conscious awareness. However, the neural substrates of conscious and unconscious attentional shifts triggered by eye gaze remain unclear. To investigate this issue, we measured brain activity using event-related functional magnetic resonance imaging while participants observed averted or straight eye-gaze cues presented supraliminally or subliminally in the central visual field and then localized a subsequent target in the peripheral visual field. Reaction times for localizing the targets were shorter under both supraliminal and subliminal conditions when eye-gaze cues were directionally congruent with the target locations than when they were directionally neutral. Conjunction analyses revealed that a bilateral cortical network, including the middle temporal gyri, inferior parietal lobules, anterior cingulate cortices, and superior and middle frontal gyri, was activated more in response to averted eyes than to straight eyes under both supraliminal and subliminal conditions. Interaction analyses revealed that the right inferior parietal lobule was specifically active when participants viewed averted eyes relative to straight eyes under the supraliminal condition; the bilateral subcortical regions, including the superior colliculus and amygdala, and the middle temporal and inferior frontal gyri in the right hemisphere were activated in response to averted versus straight eyes under the subliminal condition. These results suggest commonalities and differences in the neural mechanisms underlying conscious and unconscious attentional shifts triggered by eye gaze.
記述: 視線が無意識で注意をそらす神経メカニズムを解明. 京都大学プレスリリース. 2015-10-08.
著作権等: © 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
The full-text file will be made open to the public on 4 September 2016 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。This is not the published version. Please cite only the published version.
URI: http://hdl.handle.net/2433/200278
DOI(出版社版): 10.1016/j.neuroimage.2015.08.061
PubMed ID: 26343316
関連リンク: http://www.kyoto-u.ac.jp/ja/research/research_results/2015/151008_1.html/
出現コレクション:学術雑誌掲載論文等

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