Do perceptual asymmetries differ in peripersonal and extrapersonal space?
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.
Thomas
Nicole A
NA
Department of Psychology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada. nicole.thomas@usask.ca
Elias
Lorin J
LJ
D000293:Adolescent; D000704:Analysis of Variance; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D010468:Perceptual Disorders / Q000503:physiopathology* / Q000523:psychology*; D010550:Personal Space; D010775:Photic Stimulation / Q000379:methods; D013028:Space Perception / Q000502:physiology*; D014794:Visual Fields / Q000502:physiology*; D055815:Young Adult