Abstract
Lighted points that moved as if located on the rim of a rolling wheel were displayed to subjects whose task was to describe the pattern they perceived. The perceived patterns could be classified into one of four categories ranging from cycloidal to circular motion. Pursuit eye movements were controlled by having subjects track a fixation point that moved in the direction of the rolling wheel on a path just above the wheel’s rim. With respect to the translatory velocity of the rolling wheel, the velocity of the fixation point was 100%, 67%, 33%, or 0% (i.e., stationary). The patterns traced out by the points on the wheel were perceived to become increasingly circular as pursuit eye movements more closely matched the translatory speed of the rolling wheel. This is taken to support Stoper’s hypothesis that pursuit eye movements can establish a frame of reference for motion analysis.
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This project was supported in part by BRSG Grant RR 07080 awarded by the Biomedical Research Support Grant Program, Division of Research Resources, National Institutes of Health.
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Stern, L.D., Emelity, D. Evidence for frames of reference based on pursuit eye movements. Perception & Psychophysics 24, 521–528 (1978). https://doi.org/10.3758/BF03198778
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DOI: https://doi.org/10.3758/BF03198778