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| Research article summary (published 27 Feb 2002): |
Widespread dorsal stream activation during a parametric mental rotation task, revealed with functional magnetic resonance imaging.
Full Abstract
Following a parametrically modulated mental rotation task, in which 10 healthy subjects were instructed to determine whether alphanumeric characters were normal or mirror-reversed, bilateral dorsal stream activations culminating in the intraparietal region were revealed with functional magnetic resonance imaging. Although the parietal activations were bilateral, we observed a right hemispheric dominance for the task, consistent with our previous findings (I. M. Harris et al., 2000). By studying individual activation maps in response to the paradigm, we discerned parcellation of the intraparietal region into discrete subdivisions. In this paper, we address the involvement of structures surrounding the intraparietal sulcus in mental rotation, as well as describing a wider visuospatial attentional network, encompassing neural substrates within the dorsal stream.©2002 Elsevier Science (USA).
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Author information
Author/s: Podzebenko, Katherine (K); Egan, Gary F (GF); Watson, John D G (JD);
Affiliation: Department of Medicine, University of Sydney, Sydney, Australia.
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-Mar; vol 15 (issue 3) : pp 547-58
Dates: Created 2002/02/18; Completed 2002/04/22; Revised 2006/11/15;
PMID: 11848697, 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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