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| Research article summary (published Sep 2003): |
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Motion parallax is computed in the updating of human spatial memory.
Full Abstract
As we move through space, stationary objects around us show motion parallax:
their directions relative to us change at different rates, depending on their distance. Does the brain incorporate parallax when it updates its stored representations of space? We had subjects fixate a distant target and then we flashed lights, at different distances, onto the retinal periphery. Subjects translated sideways while keeping their gaze on the distant target, and then they looked to the remembered location of the flash. Their responses corrected almost perfectly for parallax:
they turned their eyes farther for nearer targets, in the predicted nonlinear patterns. Computer simulations suggest a neural mechanism in which feedback about self-motion updates remembered locations of objects within an internal map of three-dimensional visual space.
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Author information
Author/s: Medendorp, W Pieter (WP); Tweed, Douglas B (DB); Crawford, J Douglas (JD);
Affiliation: Canadian Institutes of Health Research Group for Action and Perception, York Centre for Vision Research, York University, Toronto, Ontario, Canada. p.medendorp(-atsign-)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-Sep; vol 23 (issue 22) : pp 8135-42
Dates: Created 2003/09/04; Completed 2003/10/02; Revised 2006/11/15;
PMID: 12954876, 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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