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Title: Insular and hippocampal contributions to remembering people with an impression of bad personality.
Authors: Tsukiura, Takashi
Shigemune, Yayoi
Nouchi, Rui
Kambara, Toshimune
Kawashima, Ryuta
Author's alias: 月浦, 崇
Keywords: fMRI
Issue Date: Feb-2012
Publisher: Oxford University Press
Journal title: Social cognitive and affective neuroscience
Volume: 8
Issue: 5
Start page: 515
End page: 522
Abstract: Our impressions of other people are formed mainly from the two possible factors of facial attractiveness and trustworthiness. Previous studies have shown the importance of orbitofrontal-hippocampal interactions in the better remembering of attractive faces, and psychological data have indicated that faces giving an impression of untrustworthiness are remembered more accurately than those giving an impression of trustworthiness. However, the neural mechanisms of the latter effect are largely unknown. To investigate this issue, we investigated neural activities with event-related fMRI while the female participants rated their impressions of the personalities of men in terms of trustworthiness. After the rating, memory for faces was tested to identify successful encoding activity. As expected, faces that gave bad impressions were remembered better than those that gave neutral or good impressions. In fMRI data, right insular activity reflected an increasing function of bad impressions, and bilateral hippocampal activities predicted subsequent memory success. Additionally, correlation between these insular and hippocampal regions was significant only in the encoding of faces associated with a bad impression. Better memory for faces associated with an impression of bad personality could reflect greater interaction between the avoidance-related insular region and the encoding-related hippocampal region.
Rights: © The Author (2012). Published by Oxford University Press.
This is not the published version. Please cite only the published version. 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。
DOI(Published Version): 10.1093/scan/nss025
PubMed ID: 22349799
Appears in Collections:Journal Articles

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