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Regional brain activations differ for semantic features but not categories

Lee, A. C. H., Graham, Kim Samantha, Simons, J. S., Hodges, J. R., Owen, A. M. and Patterson, K. 2002. Regional brain activations differ for semantic features but not categories. Neuroreport 13 (12) , pp. 1497-1501.

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Is human semantic knowledge neurally organised according to either category (e.g. living vs non-living) or attribute type (e.g. perceptual vs non-perceptual information)? Normal subjects were scanned using PET during a novel semantic production task, in which they generated either perceptual or non-perceptual information in response to names of living or non-living concepts. Analyses of blood flow in the temporal lobes revealed no significant differences associated with responses to living vs non-living concepts. Comparisons between retrieval of perceptual vs non-perceptual information, however, revealed significantly greater blood flow in left posterior inferior temporal cortex and right fusiform cortex associated with perceptual information and in left middle temporal cortex with non-perceptual information. These findings support a primarily attribute-based neural organisation of semantic knowledge.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Psychology
Systems Immunity Research Institute (SIURI)
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Uncontrolled Keywords: Functional neuroimaging, PET, Semantic memory, Temporal lobes
Publisher: Lippincott, Williams & Wilkins
ISSN: 0959-4965
Last Modified: 04 Jun 2017 04:14

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