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    Brain Res Bull. 2007 Nov 1;74(6):387-96. Epub 2007 Jul 5.

    Self-awareness and the left inferior frontal gyrus: inner speech use during self-related processing.

    Source

    Behavioral Sciences, Mount Royal College, 4825 Mount Royal Gate S.W., Calgary, Alberta, Canada T3E 6K6. amorin@mtroyal.ca

    Abstract

    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.

    PMID:
    17920447
    [PubMed - indexed for MEDLINE]

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