Journal
ANNUAL REVIEW OF PSYCHOLOGY
Volume 55, Issue -, Pages 181-205Publisher
ANNUAL REVIEWS
DOI: 10.1146/annurev.psych.55.090902.141903
Keywords
first-order motion; second-order motion; third-order motion; feature tracking; psychophysics
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Psychophysical experiments on feature tracking suggest that most of our sensitivity to chromatic motion and to second-order motion depends on feature tracking. There is no reason to suppose that the visual system contains motion sensors dedicated to the analysis of second-order motion. Current psychophysical and physiological data indicate that local motion sensors are selective for orientation and spatial frequency but they do not eliminate any of the three main models-the Reichardt detector, the motion-energy filter, and gradient-based sensors. Both psychophysical and physiological data suggest that both broadly oriented and narrowly oriented motion sensors are important in the early analysis of motion in two dimensions.
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