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 ...
Testing the activation–orientation account of spatial attentional asymmetries using transcranial direct current stimulationLoftus, Andrea; Nicholls, M. (2012)The general population shows an attentional bias to the left, known as pseudoneglect. This bias is thought to be driven by higher levels of activation in right parietal areas. Using transcranial direct current stimulation ...