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| Research article summary (published 13 Feb 2003): |
Category-specific representations of social and nonsocial knowledge in the human prefrontal cortex.
Full Abstract
Complex social behavior and the relatively large size of the prefrontal cortex are arguably two of the characteristics that distinguish humans from other animals. Grafman presented a framework concerning how the prefrontal cortex (PFC) controls complex behavior using stored structured event complexes (SECs). We report behavioral and imaging data from a modified go/no-go paradigm in which subjects had to classify words (semantic) and phrases (SEC) according to category. In experimental trials, subjects classified items according to social or nonsocial activity; in control trials, they classified items according to font. Subjects were faster to classify social than nonsocial semantic items, with the reverse pattern evident for the social and nonsocial SEC items. In addition, the conditions were associated with different patterns of PFC activation. These results suggest that there are different psychological and neural substrates for social and nonsocial semantic and SEC representations.
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Author information
Author/s: Wood, J N (JN); Romero, S G (SG); Makale, M (M); Grafman, J (J);
Affiliation: National Institutes of Health, Bethesda, MD 20892-1440, USA.
Journal and publication information
Publication Type: Clinical Trial; Comparative Study; Journal Article
Journal: Journal of cognitive neuroscience (J Cogn Neurosci), published in United States. (Language: eng)
Reference: 2003-Feb; vol 15 (issue 2) : pp 236-48
Dates: Created 2003/04/04; Completed 2003/05/08; Revised 2007/11/15;
PMID: 12676061, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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