title: Perceptual processing time differences owing to visual field asymmetries.
abstract: Recent experiments have reported increased endpoint accuracy for movements performed in the lower vs. the upper visual field, suggesting that there is superior feedback-based processing in the lower visual field owing to a visuomotor subsystem processing advantage. Differences, however, in the perceptual subsystem may also play a role in the lower visual field advantage. In this study, participants performed an inspection time task, a measure of perceptual processing time, requiring the identification of an asymmetrical 'pi' stimulus presented in the central, upper, or the lower visual field for a brief period. Significant differences between the percentage of correct identifications between visual fields indicated a lower visual field advantage over upper visual field for perceptual identification.
authors.affiliation: School of Human Kinetics, University of British Columbia, Vancouver, BC, Canada. carlsen@interchange.ubc.ca
authors.forename: Anthony N
authors.initials: AN
authors.lastname: Carlsen
authors.forename: Dana
authors.initials: D
authors.lastname: Maslovat
authors.forename: Romeo
authors.initials: R
authors.lastname: Chua
authors.forename: Ian M
authors.initials: IM
authors.lastname: Franks
mesh_terms: D000328:Adult; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008297:Male; D010775:Photic Stimulation / Q000379:methods; D011930:Reaction Time / Q000502:physiology*; D013997:Time Factors; D014794:Visual Fields / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*