학술논문
[??] as a potential control variable for visually guided braking
Document Type
Author abstract
Author
Source
Journal of Experimental Psychology: Human Perception and Performance. April, 2006, Vol. 32 Issue 2, p251, 17 p.
Subject
Language
English
ISSN
0096-1523
Abstract
D. N. Lee (1976) described a braking strategy based on optical expansion in which the driver brakes so that the target's time-to-contact declines around a constant slope in the range -0.5 [less than or equal to] [??] < 0. The present results from a series of braking simulations confirm and extend earlier reports (E. H. Yilmaz & W. H. Warren, 1995) that performance is broadly compatible with the t hypothesis. However, performance was not enhanced in situations that favored the estimation of [??], and unlike in earlier reports, performance deteriorated in the absence of a ground plane that provided information about speed and target distance. This finding suggests that the [??] hypothesis does not provide a complete account of braking control. Keywords: braking, optic flow, visual control, driving, time-to-contact