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| Research article summary (published 14 Jul 2003): |
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Gaze-centered updating of visual space in human parietal cortex.
Full Abstract
Single-unit recordings have identified a region in the posterior parietal cortex (PPC) of the monkey that represents and updates visual space in a gaze-centered frame. Here, using event-related functional magnetic resonance imaging, we identified an analogous bilateral region in the human PPC that shows contralateral topography for memory-guided eye movements and arm movements. Furthermore, when eye movements reversed the remembered horizontal target location relative to the gaze fixation point, this PPC region exchanged activity across the two cortical lobules. This shows that the human PPC dynamically updates the spatial goals for action in a gaze-centered frame.
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Author information
Author/s: Medendorp, W Pieter (WP); Goltz, Herbert C (HC); Vilis, Tutis (T); Crawford, J Douglas (JD);
Affiliation: Canadian Institutes of Health Research Group on Action and Perception, Centre for Vision Research, York University, Toronto, Ontario, Canada, M3J 1P3. p.medendorp@nici.kun.nl
Journal and publication information
Publication Type: Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't
Journal: The Journal of neuroscience : the official journal of the Society for Neuroscience (J Neurosci), published in United States. (Language: eng)
Reference: 2003-Jul; vol 23 (issue 15) : pp 6209-14
Dates: Created 2003/07/17; Completed 2003/08/13; Revised 2006/11/15;
PMID: 12867504, 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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