Perceptual Information for the Timing of Interceptive Action

James R Tresilian

doi:10.1068/p190223

journal article Apr 01, 1990

Perceptual Information for the Timing of Interceptive Action

James R Tresilian

Perception Vol. 19 No. 2 pp. 223-239 · SAGE Publications

View at Publisher Save 10.1068/p190223

Abstract

Time-to-contact is an important quantity for controlling activities which involve the timing of interactions with objects and surfaces in motion relative to an observer. Two alternative means for obtaining perceptual information that might be used to obtain the time-to-contact required to correctly time an interaction have been contrasted: a method based on the perception of distance and velocity, and a method due to Lee involving a perceptual variable called tau. A monocular version of the first method is presented and shown to place a highly unrealistic and arbitrary limitation on the capabilities of the visual system. The second method is reviewed and its limitations discussed. Several means by which these limitations can be overcome are presented. Recently reported results from experiments which involved catching self-luminous balls in the dark are interpreted in terms of timing information available to the subject, and the notions of intermodal and multimodal timing information are introduced. Finally, the possibility that timing information is available to an observer which does not involve the variable tau is considered. It is concluded that many questions regarding the perception of time-to-contact remain unresolved and that much empirical research remains to be done.

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Details

Published: Apr 01, 1990
Vol/Issue: 19(2)
Pages: 223-239
License: View

Authors

J

James R Tresilian

Department of Psychology, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, Scotland

Cite This Article

James R Tresilian (1990). Perceptual Information for the Timing of Interceptive Action. Perception, 19(2), 223-239. https://doi.org/10.1068/p190223

Perceptual Information for the Timing of Interceptive Action

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