Journal
CORTEX
Volume 45, Issue 4, Pages 537-543Publisher
ELSEVIER MASSON
DOI: 10.1016/j.cortex.2007.12.011
Keywords
Number line; Mental representation; Space; Visuomotor adaptation; Perception
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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 to right-shifting prisms and control spectacles. The findings demonstrate that a simple visuomotor task can alter the distribution of spatial attention for the greyscales task in normal participants. (C) 2008 Elsevier Srl. All rights reserved.
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