Abstract
Changes in perceived depth as a function of exposure duration were compared for two stimulus conditions. In one. a depth interval between two points of light was produced by the retinal disparity cue, and in the other condition, otherwise identical to the first, the light points were connected by a thin luminous line. The principle finding was that the perceived depth interval between the light points increased as a function of exposure durations greater than 1 sec, while no change in the perceived depth interval between the end points of the line occurred. The results were interpreted in terms of a greater equidistance tendency (ET) operating for the line than for the point condition. It was concluded that both the ET and the retinal disparity cue increase in strength as a function of exposure duration.
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This research was supported by National Institutes of Health Grant 02208 to the second author and by National Science Foundation URP Grant GY-8701. The experiments were cartried out as a portion of the honors thesis of the first author. A portion of the data of this study was reported at the Eastern Psychological Association meetings, Washington, D.C., May 1973. The valuable comments, criticisms, and suggestions of Walter C. Gogel are gratethlly acknowledged. Requests for reprints should be sent to the second author.
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Owens, D.A., Wist, E.R. The temporal course of the relationship between retinal disparity and the equidistance tendency in the determination of perceived depth. Perception & Psychophysics 16, 245–252 (1974). https://doi.org/10.3758/BF03203937
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DOI: https://doi.org/10.3758/BF03203937