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Relating Introspective Accuracy to Individual Differences in Brain Structure
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Relating Introspective Accuracy to Individual Differences in Brain Structure
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Journal Article
Relating Introspective Accuracy to Individual Differences in Brain Structure
2010
Overview
The ability to introspect about self-performance is key to human subjective experience, but the neuroanatomical basis of this ability is unknown. Such accurate introspection requires discriminating correct decisions from incorrect ones, a capacity that varies substantially across individuals. We dissociated variation in introspective ability from objective performance in a simple perceptualdecision task, allowing us to determine whether this interindividual variability was associated with a distinct neural basis. We show that introspective ability is correlated with gray matter volume in the anterior prefrontal cortex, a region that shows marked evolutionary development in humans. Moreover, interindividual variation in introspective ability is also correlated with white-matter microstructure connected with this area of the prefrontal cortex. Our findings point to a focal neuroanatomical substrate for introspective ability, a substrate distinct from that supporting primary perception.
Publisher
American Association for the Advancement of Science,The American Association for the Advancement of Science
Subject
/ Anatomy
/ Biological and medical sciences
/ Brain
/ Corpus Callosum - anatomy & histology
/ Fundamental and applied biological sciences. Psychology
/ Humans
/ Judgment
/ Male
/ Memory
/ Mental imagery. Mental representation
/ Prefrontal Cortex - anatomy & histology
/ Prefrontal Cortex - physiology
/ Psychology. Psychoanalysis. Psychiatry
/ Psychology. Psychophysiology
/ Thinking
