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Regional brain activations differ for semantic features but not categories

Lee, A. C. H., Graham, Kim Samantha ORCID:, 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: 21 Oct 2022 09:01

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