College of Psychology: Faculty Articles

Title

Afferent delays and the mislocalization of perisaccadic stimuli

Document Type

Article

Publication Date

1-1-2001

Keywords

Oculomotor; Visual delays; Auditory targets; Saccade; Localization

Publication Title

Vision Research

ISSN

0042-6989

Volume

41

Issue/No.

20

Abstract

Determining the precise moment a visual stimulus appears is difficult because visual response latencies vary. This temporal uncertainty could cause localization errors to brief visual targets presented before and during eye movements if the oculomotor system cannot determine the position of the eye at the time the stimulus appeared. We investigated the effect of varying neural processing time on localization accuracy for perisaccadic visual targets that differed in luminance. Although systematic errors in localization were observed, the effect of luminance was surprisingly small. We explore several hypotheses that may explain why processing delays are not more disruptive to localization performance.

DOI

http://dx.doi.org/10.1016/S0042-6989(01)00156-0

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