title: Centrifugal bias for second-order but not first-order motion.
abstract: Limited-lifetime Gabor stimuli were used to assess both first- and second-order motion in peripheral vision. Both first- and second-order motion mechanisms were present at a 20-deg eccentricity. Second-order motion, unlike first-order, exhibits a bias for centrifugal motion, suggesting a role for the second-order mechanism in optic flow processing.
authors.affiliation: Department of Ophthalmology, McGill University, Montréal, Québec, Canada. serge@bic.mni.mcgill.ca
authors.forename: S O
authors.initials: SO
authors.lastname: Dumoulin
authors.forename: C L
authors.initials: CL
authors.lastname: Baker
authors.forename: R F
authors.initials: RF
authors.lastname: Hess
mesh_terms: D016880:Anisotropy; D015350:Contrast Sensitivity / Q000502:physiology*; D006801:Humans; D008027:Light; D016014:Linear Models; D009039:Motion Perception / Q000502:physiology*; D017711:Nonlinear Dynamics; D010775:Photic Stimulation / Q000379:methods; D011594:Psychometrics / Q000379:methods; D013269:Stochastic Processes; D014794:Visual Fields