title: Correcting some misperceptions of time-to-collision: a critical note.
abstract: Stewart et al (1993, Perception 22 1227-1224) attempted to demonstrate that the ratio of angular speed to angular acceleration, [symbol see text]/[symbol see text], of the approaching object is preferred as the source of time-to-collision information to the ratio of visual angle to angular speed, [symbol see text]/[symbol see text]. It is demonstrated that this is not justified.
authors.affiliation: MRC Applied Psychology Unit, Cambridge, UK.
authors.forename: J R
authors.initials: JR
authors.lastname: Tresilian
mesh_terms: D004215:Distance Perception; D006801:Humans; D009038:Motion; D009039:Motion Perception; D013997:Time Factors