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| Research article summary (published Jul 2002): |
Tracking the mind's image in the brain I: time-resolved fMRI during visuospatial mental imagery.
Full Abstract
Mental imagery, the generation and manipulation of mental representations in the absence of sensory stimulation, is a core element of numerous cognitive processes. We investigate the cortical mechanisms underlying imagery and spatial analysis in the visual domain using event-related functional magnetic resonance imaging during the mental clock task. The time-resolved analysis of cortical activation from auditory perception to motor response reveals a sequential activation of the left and right posterior parietal cortex, suggesting that these regions perform distinct functions in this imagery task. This is confirmed by a trial-by-trial analysis of correlations between reaction time and onset, width, and amplitude of the hemodynamic response. These findings pose neurophysiological constraints on cognitive models of mental imagery.
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Author information
Author/s: Formisano, Elia (E); Linden, David E J (DE); Di Salle, Francesco (F); Trojano, Luigi (L); Esposito, Fabrizio (F); Sack, Alexander T (AT); Grossi, Dario (D); Zanella, Friedhelm E (FE); Goebel, Rainer (R);
Affiliation: Department of Cognitive Neuroscience, Faculty of Psychology, Universiteit Maastricht, Postbus 616, The Netherlands.
Journal and publication information
Publication Type: Journal Article
Journal: Neuron (Neuron), published in United States. (Language: eng)
Reference: 2002-Jul; vol 35 (issue 1) : pp 185-94
Dates: Created 2002/07/18; Completed 2002/08/13; Revised 2006/11/15;
PMID: 12123618, 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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