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ファイル | 記述 | サイズ | フォーマット | |
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j.brainres.2014.02.046.pdf | 620.18 kB | Adobe PDF | 見る/開く |
タイトル: | Electrophysiological correlates of the efficient detection of emotional facial expressions. |
著者: | Sawada, Reiko ![]() Sato, Wataru ![]() ![]() Uono, Shota ![]() Kochiyama, Takanori Toichi, Motomi ![]() ![]() |
著者名の別形: | 澤田, 玲子 |
キーワード: | Anti-expression Arousal Emotional facial expression Early posterior negativity (EPN) Visual search |
発行日: | 29-Apr-2014 |
出版者: | Elsevier B.V. |
誌名: | Brain research |
巻: | 1560 |
開始ページ: | 60 |
終了ページ: | 72 |
抄録: | Behavioral studies have shown that emotional facial expressions are detected more rapidly and accurately than are neutral expressions. However, the neural mechanism underlying this efficient detection has remained unclear. To investigate this mechanism, we measured event-related potentials (ERPs) during a visual search task in which participants detected the normal emotional facial expressions of anger and happiness or their control stimuli, termed "anti-expressions, " within crowds of neutral expressions. The anti-expressions, which were created using a morphing technique that produced changes equivalent to those in the normal emotional facial expressions compared with the neutral facial expressions, were most frequently recognized as emotionally neutral. Behaviorally, normal expressions were detected faster and more accurately and were rated as more emotionally arousing than were the anti-expressions. Regarding ERPs, the normal expressions elicited larger early posterior negativity (EPN) at 200-400ms compared with anti-expressions. Furthermore, larger EPN was related to faster and more accurate detection and higher emotional arousal. These data suggest that the efficient detection of emotional facial expressions is implemented via enhanced activation of the posterior visual cortices at 200-400ms based on their emotional significance. |
著作権等: | © 2014 Elsevier B.V. この論文は著者最終稿です。内容が印刷版と異なることがありますので、引用の際には出版社版をご確認ご利用ください。This is the Accepted Author Manuscript. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/187077 |
DOI(出版社版): | 10.1016/j.brainres.2014.02.046 |
PubMed ID: | 24594020 |
出現コレクション: | 学術雑誌掲載論文等 |
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