Prism adaptation overcomes pseudoneglect for the greyscales task.
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.
Loftus
Andrea M
AM
School of Behavioural Science, University of Melbourne, VIC, Australia. andrea.loftus@uwa.edu.au
Vijayakumar
Nandita
N
Nicholls
Michael E R
ME
D000222:Adaptation, Physiological; D001288:Attention / Q000502:physiology; D003116:Color; D005260:Female; D005364:Field Dependence-Independence; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D007909:Lenses; D008297:Male; D009949:Orientation / Q000502:physiology*; D010468:Perceptual Disorders / Q000534:rehabilitation; D011597:Psychomotor Performance / Q000502:physiology*; D012016:Reference Values; D013028:Space Perception / Q000502:physiology*; D014794:Visual Fields / Q000502:physiology; D055815:Young Adult