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Title: Neural mechanisms underlying the effects of face-based affective signals on memory for faces: a tentative model.
Authors: Tsukiura, Takashi  kyouindb  KAKEN_id
Author's alias: 月浦, 崇
Keywords: fMRI
face
memory
amygdala
orbitofrontal cortex
insula
Issue Date: 24-Jul-2012
Publisher: Frontiers
Journal title: Frontiers in integrative neuroscience
Volume: 6
Thesis number: 50
Abstract: In our daily lives, we form some impressions of other people. Although those impressions are affected by many factors, face-based affective signals such as facial expression, facial attractiveness, or trustworthiness are important. Previous psychological studies have demonstrated the impact of facial impressions on remembering other people, but little is known about the neural mechanisms underlying this psychological process. The purpose of this article is to review recent functional MRI (fMRI) studies to investigate the effects of face-based affective signals including facial expression, facial attractiveness, and trustworthiness on memory for faces, and to propose a tentative concept for understanding this affective-cognitive interaction. On the basis of the aforementioned research, three brain regions are potentially involved in the processing of face-based affective signals. The first candidate is the amygdala, where activity is generally modulated by both affectively positive and negative signals from faces. Activity in the orbitofrontal cortex (OFC), as the second candidate, increases as a function of perceived positive signals from faces; whereas activity in the insular cortex, as the third candidate, reflects a function of face-based negative signals. In addition, neuroscientific studies have reported that the three regions are functionally connected to the memory-related hippocampal regions. These findings suggest that the effects of face-based affective signals on memory for faces could be modulated by interactions between the regions associated with the processing of face-based affective signals and the hippocampus as a memory-related region.
Rights: © 2012 Tsukiura. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.
This Document is Protected by copyright and was first published by Frontiers. All rights reserved. it is reproduced with permission.
URI: http://hdl.handle.net/2433/159724
DOI(Published Version): 10.3389/fnint.2012.00050
PubMed ID: 22837740
Appears in Collections:Journal Articles

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