title: Computing heading in the presence of moving objects: a model that uses motion-opponent operators.
abstract: Psychophysical experiments have shown that human heading judgments can be biased by the presence of moving objects. Here we present a theoretical argument that motion differences can account for the direction of bias seen in humans. We further examine the responses of a computer simulation of a model for computing heading that uses motion-opponent operators similar to cells in the primate middle temporal visual area. When moving objects are present, this model shows similar biases to those seen with humans, suggesting that such a model may underlie human heading computations.
authors.affiliation: Department of Mathematics and Computer Science, College of the Holy Cross, P.O. Box 116A, Worcester, MA 01610, USA.
authors.forename: Constance S
authors.initials: CS
authors.lastname: Royden
mesh_terms: D003198:Computer Simulation; D006801:Humans; D008959:Models, Neurological; D008960:Models, Psychological; D009039:Motion Perception / Q000502:physiology*; D011601:Psychophysics; D013702:Temporal Lobe / Q000502:physiology; D014794:Visual Fields / Q000502:physiology; D014795:Visual Pathways / Q000502:physiology