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| Research article summary (published 30 Dec 2001): |
The role of action knowledge in the comprehension of artefacts--a PET study.
Full Abstract
Activation of the left ventral premotor cortex (PMv) has in previous imaging studies been associated with the processing of visually presented artefacts. It has been suggested that this activation reflects processing of action knowledge and that action knowledge contributes to the comprehension of artefacts. The purpose of the present study was to test whether activation of the left PMv is common for all tasks involving the comprehension of artefacts or whether it is task specific. This was done by comparing performance and regional cerebral blood flow (rCBF) associated with two categorization tasks and two naming tasks divided by category (natural objects vs artefacts). The left PMv (BA 6/44) was more activated by the categorization task for artefacts than by the categorization task for natural objects and the naming task for artefacts. However, the left PMv was not associated with the contrast between the naming task for artefacts and the naming task for natural objects nor with the processing of artefacts in general. If the PMv does mediate action knowledge, these results suggest that action knowledge does not contribute directly to the comprehension of artefacts but may support the categorization of artefacts. The significance of these findings is discussed in relation to category-specific recognition impairments for artefacts.
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Author information
Author/s: Gerlach, C (C); Law, I (I); Gade, A (A); Paulson, O B (OB);
Affiliation: The Neurobiology Research Unit, N9201, The National University Hospital, Rigshospitalet, Copenhagen, Denmark
Journal and publication information
Publication Type: Journal Article; Research Support, Non-U.S. Gov't
Journal: NeuroImage (Neuroimage), published in United States. (Language: eng)
Reference: 2002-Jan; vol 15 (issue 1) : pp 143-52
Dates: Created 2002/01/04; Completed 2002/03/20; Revised 2006/11/15;
PMID: 11771982, 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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