title: Illusory rebound motion and the motion continuity heuristic.
abstract: A new motion illusion, "illusory rebound motion" (IRM), is described. IRM is qualitatively similar to illusory line motion (ILM). ILM occurs when a bar is presented shortly after an initial stimulus such that the bar appears to move continuously away from the initial stimulus. IRM occurs when a second bar of a different color is presented at the same location as the first bar within a certain delay after ILM, making this second bar appear to move in the opposite direction relative to the preceding direction of ILM. Three plausible accounts of IRM are considered: a shifting attentional gradient model, a motion aftereffect (MAE) model, and a heuristic model. Results imply that IRM arises because of a heuristic about how objects move in the environment: In the absence of countervailing evidence, motion trajectories are assumed to continue away from the location where an object was last seen to move.
authors.affiliation: Department of Psychological and Brain Sciences, Moore Hall, Dartmouth College, H.B. 6207, Hanover, NH 03755, USA. po-jang.hsieh@dartmouth.edu
authors.forename: P-J
authors.initials: PJ
authors.lastname: Hsieh
authors.forename: G P
authors.initials: GP
authors.lastname: Caplovitz
authors.forename: P U
authors.initials: PU
authors.lastname: Tse
mesh_terms: D003118:Color Perception / Q000502:physiology; D006801:Humans; D008960:Models, Psychological; D009039:Motion Perception / Q000502:physiology*; D009903:Optical Illusions; D010775:Photic Stimulation; D011581:Psychological Tests; D011601:Psychophysics; D013997:Time Factors