title: Coarse-fine dichotomies in human stereopsis.
abstract: There is a long history of research into depth percepts from very large disparities, beyond the fusion limit. Such diplopic stimuli have repeatedly been shown to provide reliable depth percepts. A number of researchers have pointed to differences between the processing of small and large disparities, arguing that they are subserved by distinct neural mechanisms. Other studies have pointed to a dichotomy between the processing of 1st- and 2nd-order stimuli. Here we review literature on the full range of disparity processing to determine how well different proposed dichotomies map onto one another, and to identify unresolved issues.
authors.affiliation: Department of Psychology, Centre for Vision Research, 4700 Keele St., North York Ontario, Canada M3J1P3. lwilcox@yorku.ca
authors.forename: Laurie M
authors.initials: LM
authors.lastname: Wilcox
authors.forename: Robert S
authors.initials: RS
authors.lastname: Allison
mesh_terms: D000818:Animals; D003867:Depth Perception / Q000502:physiology*; D004192:Discrimination, Psychological / Q000502:physiology; D006801:Humans; D010775:Photic Stimulation / Q000379:methods; D011601:Psychophysics; D012684:Sensory Thresholds / Q000502:physiology; D015357:Vision Disparity / Q000502:physiology*; D015348:Vision, Binocular / Q000502:physiology; D014793:Visual Cortex / Q000502:physiology