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Do perceptual asymmetries differ in peripersonal and extrapersonal space?
Nicole A Thomas1, Lorin J Elias
1Department of Psychology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada. nicole.thomas@usask.ca
Abstract:
A space-based dissociation has been observed in clinical hemineglect, wherein neglect can be specific to either peripersonal or extrapersonal space. This same dissociation might occur in pseudoneglect, where both space-based and visual field differences have been observed. Upper and bottom visual field differences were examined within-subjects (N = 39), by presenting the greyscales task in both peripersonal and extrapersonal space. The leftward bias was strongest in the bottom visual field; however, no space-based differences were observed. It appears that perceptual biases differ between the upper and bottom visual fields, but this is not related to space-based perceptual biases.
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