Self-awareness and the left inferior frontal gyrus: Inner speech use during self-related processing
- 作者：Alain Morin ; Jayson Michaud
- 关键词：Self-awareness ; Self-referential activity ; Inner speech ; Left inferior frontal gyrus ; Conceptual self-domains ; Perceptual self-domains
- 刊名：Brain Research Bulletin
- 出版年：2007
- 期刊代码：9_03619230
- 类别：neu
- 出版时间：1 November 2007
- 卷：74
- 期：6
- 页码：387-396
- 文件大小：217 K
摘要
To test the hypothesis of a participation of inner speech in self-referential activity we reviewed 59 studies measuring brain activity during processing of self-information in the following self-domains: agency, self-recognition, emotions, personality traits, autobiographical memory, preference judgments, and REST. The left inferior frontal gyrus (LIFG) has been shown to sustain inner speech use. We calculated the percentage of studies reporting LIFG activity for each self-dimension. 55.9%of all studies reviewed identified LIFG (and presumably inner speech) activity during self-awareness tasks. Furthermore, the LIFG was more frequently recruited during conceptual tasks (e.g., emotions, traits) than during perceptual tasks (e.g., agency, self-recognition). This supports the view of a relative involvement of inner speech in self-reflective processes.