This article addresses the question how fast and accurate the location of a single stimulus can be perceived. In Experiment 1, the authors measures localization performance in a task which required subjects to perceive and report the location of a single target stimulus presented in one square of an imaginary 25 x 19 grid. Two factors were varied: stimulus duration and stimulus eccentricity. In Experiment 2, the authors measured saccadic eye response latencies to clarify the role of eye movements in localization performance. In Experiment 3, the authors compared localization performance in the absence and presence of eye movements. It is emphasized that the present findings require confirmation and extension; possible directions for future research are discussed.
Abstract