title: Visual mechanisms of motion analysis and motion perception.
abstract: 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.
authors.affiliation: School of Psychology, University Park, Nottingham, United Kingdom. Andrew.Derrington@nottingham.ac.uk
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Derrington
authors.forename: Harriet A
authors.initials: HA
authors.lastname: Allen
authors.forename: Louise S
authors.initials: LS
authors.lastname: Delicato
mesh_terms: D006801:Humans; D009039:Motion Perception / Q000502:physiology*; D013997:Time Factors; D014796:Visual Perception / Q000502:physiology*