Movement detection thresholds and stimulus duration |
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Authors: | Ronald L. Cohen Claude Bonnet |
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Affiliation: | 1. Department of Behavioral Science, University of Toronto, Toronto 5, Canada 2. Sorbonne-Universite de Paris, Paris, France
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Abstract: | Movement detection thresholds were measured for varying exposures of a moving spot. A tradeoff was found in which an increase in duration (T) was offset by a decrease in the velocity required for detection (V). In the range of durations studied (about 50–700 msec), V × T was constant. The V × T constancy was interpreted in terms of the direct detection of movement as motion, and a comparison was made with Bloch’s law. |
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