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Ceiling effects make Hughes and Nicholson's data analyses and conclusions inconclusive q
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In: http://www.docbob.ca/pubs/Uttl_2010_CeilingEffectsMakeHughesAndNicholsonsData.pdf
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Open Access Self-Reflection and the Inner Voice: Activation of the Left Inferior Frontal Gyrus During Perceptual and Conceptual Self-Referential Thinking
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In: http://www2.mtroyal.ab.ca/~amorin/LIFG2.pdf
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Abstract:
Abstract: Inner speech involvement in self-reflection was examined by reviewing 130 studies assessing brain activation during self-referential processing in key self-domains: agency, self-recognition, emotions, personality traits, autobiographical memory, and miscellaneous (e.g., prospection, judgments). The left inferior frontal gyrus (LIFG) has been shown to be reliably recruited during inner speech production. The percentage of studies reporting LIFG activity for each self-dimension was calculated. Fifty five percent of all studies reviewed indicated LIFG (and presumably inner speech) activity during self-reflection tasks; on average LIFG activation is observed 16 % of the time during completion of non-self tasks (e.g., attention, perception). The highest LIFG activation rate was observed during retrieval of autobiographical information. The LIFG was significantly more recruited during conceptual tasks (e.g., prospection, traits) than during perceptual tasks (agency and self-recognition). This constitutes additional evidence supporting the idea of a participation of inner speech in self-related thinking.
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Keyword:
brain-imaging; conceptual self-domains; inner speech; language; left inferior frontal gyrus; perceptual self-domains; Self-awareness; self-referential activity; self-reflection; self-talk; verbal labeling
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URL: http://www2.mtroyal.ab.ca/~amorin/LIFG2.pdf
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.404.8143
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