title: Tapered dipoles in briefly flashed glass-pattern sequences disambiguate perceived motion direction.
abstract: In order to investigate the relationship between 'neural speedlines', form (shape), and fast motion-direction decisions, Glass patterns were constructed with dipoles assuming a tapered shape. The results of a 2-alternative forced-choice direction-discrimination task, for both concentric and translational Glass-pattern sequences, suggest that with short stimulus presentations (< 1 s) form can influence direction decisions. This result implies that neural speedlines may be analogous to tapered lines and further supports Geisler's (1999, Nature 400 65-69) model of form/motion interaction.
authors.affiliation: Department of Psychology, Macquarie University, North Ryde, Sydney, NSW 2109, Australia. Bareena.Johnson@gmail.com
authors.forename: Bareena
authors.initials: B
authors.lastname: Johnson
authors.forename: Peter
authors.initials: P
authors.lastname: Wenderoth
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D004192:Discrimination, Psychological / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D009039:Motion Perception / Q000502:physiology*; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D011601:Psychophysics; D055815:Young Adult