title: Effects of movement in the background field on long-range apparent motion.
abstract: Two experiments are reported using time-till-breakdown as a measure of apparent motion (AM) in untrained subjects. In Experiment 1 centrally viewed dynamic random dot stereograms and non-disparate stimuli in dynamic random dot fields yielded higher optimal frequencies than did a standard binocular condition. In Experiment 2 a higher optimal frequency was observed for disparate dynamic random dot stimuli compared with both standard binocular and non disparate stimuli presented on a static random dot field. Interaction between short- and long-range AM processes is considered in the interpretation of the findings.
authors.affiliation: University of Newcastle, N.S.W. Australia.
authors.forename: D C
authors.initials: DC
authors.lastname: Finlay
authors.forename: M L
authors.initials: ML
authors.lastname: Manning
authors.forename: R A
authors.initials: RA
authors.lastname: Neill
authors.forename: B
authors.initials: B
authors.lastname: Fenelon
mesh_terms: D003867:Depth Perception / Q000502:physiology; D005403:Fixation, Ocular; D006801:Humans; D007088:Illusions / Q000502:physiology*; D009039:Motion Perception / Q000502:physiology*; D009903:Optical Illusions / Q000502:physiology*; D010364:Pattern Recognition, Visual / Q000502:physiology; D013997:Time Factors