Prism adaptation overcomes pseudoneglect for the greyscales task
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Visuomotor adaptation to left-shifting prisms can affect performance for a variety of tasks in neurologically intact (normal) participants. This study examined whether visuomotor adaptation affects performance on the greyscales task in normal participants. Forty-two normal participants completed a greyscales task before and after adaptation to either: left-shifting prisms, right-shifting prisms or control spectacles that did not shift the visual scene. Participants demonstrated a leftward bias (i.e., selected the stimulus that was darker on the left as being darker overall) that was reversed by a short period of visuomotor adaptation to left-shifting prisms. In contrast, this bias was unaffected by adaptation toright-shifting prisms and control spectacles. The findings demonstrate that a simple visuomotortask can alter the distribution of spatial attention for the greyscales task in normal participants.
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Loftus, Andrea; Nicholls, M.; Mattingley, J.; Bradshaw, J. (2008)Adaptation to right-shifting prisms improves left neglect for mental number line bisection.This study examined whether adaptation affects the mental number line in normal participants.Thirty-six participants completed a ...
Nicholls, M.; Kamer, A.; Loftus, Andrea (2008)While patients with right parietal damage and spatial neglect bisect lines to the right, the general population bisects lines to the left; a phenomenon known as pseudoneglect. The leftward bias also occurs for mental ...
Chapman, H.; Eramudugolla, R.; Gavrilescu, M.; Strudwick, M.; Loftus, Andrea; Cunnington, R.; Mattingley, J. (2010)Visuomotor adaptation to a shift in visual input produced by prismatic lenses is an example of dynamicsensory-motor plasticity within the brain. Prism adaptation is readily induced in healthy individuals, andis thought ...