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タイトル: | Neural correlates of the self-reference effect: evidence from evaluation and recognition processes. |
著者: | Yaoi, Ken Osaka, Mariko Osaka, Naoyuki |
著者名の別形: | 矢追, 健 |
キーワード: | self-reference effect medial prefrontal cortex episodic memory encoding retrieval |
発行日: | 26-Jun-2015 |
出版者: | Frontiers |
誌名: | Frontiers in human neuroscience |
巻: | 9 |
論文番号: | 383 |
抄録: | The self-reference effect (SRE) is defined as better recall or recognition performance when the memorized materials refer to the self. Recently, a number of neuroimaging studies using self-referential and other-referential tasks have reported that self- and other-referential judgments basically show greater activation in common brain regions, specifically in the medial prefrontal cortex (MPFC) when compared with nonmentalizing judgments, but that a ventral-to-dorsal gradient in MPFC emerges from a direct comparison between self- and other-judgments. However, most of these previous studies could not provide an adequate explanation for the neural basis of SRE because they did not directly compare brain activation for recognition/recall of the words referenced to the self with another person. Here, we used an event-related functional magnetic resonance imaging (fMRI) that measured brain activity during processing of references to the self and another, and for recognition of self and other referenced words. Results from the fMRI evaluation task indicated greater activation in ventromedial prefrontal cortex (VMPFC) in the self-referential condition. While in the recognition task, VMPFC, posterior cingulate cortex (PCC) and bilateral angular gyrus (AG) showed greater activation when participants correctly recognized self-referenced words versus other-referenced words. These data provide evidence that the self-referenced words evoked greater activation in the self-related region (VMPFC) and memory-related regions (PCC and AG) relative to another person in the retrieval phase, and that the words remained as a stronger memory trace that supports recognition. |
著作権等: | © 2015 Yaoi, Osaka and Osaka. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution and reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
URI: | http://hdl.handle.net/2433/201618 |
DOI(出版社版): | 10.3389/fnhum.2015.00383 |
PubMed ID: | 26167149 |
出現コレクション: | 学術雑誌掲載論文等 |
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