Rock Paul B, Harris Mike G
School of Psychology, University of Birmingham, Birmingham, United Kingdom.
J Exp Psychol Hum Percept Perform. 2006 Apr;32(2):251-67. doi: 10.1037/0096-1523.32.2.251.
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 < or = tau < 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 tau hypothesis. However, performance was not enhanced in situations that favored the estimation of tau, 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 tau hypothesis does not provide a complete account of braking control.
D. N. 李（1976年）描述了一种基于视觉扩展的制动策略，即驾驶员制动以使目标的接触时间以-0.5 <或= τ <0范围内的恒定斜率下降。一系列制动模拟的当前结果证实并扩展了早期报告（E. H. 伊尔马兹和W. H. 沃伦，1995年），即性能与τ假设大致相符。然而，在有利于估计τ的情况下性能并未提高，并且与早期报告不同的是，在没有提供速度和目标距离信息的地平面的情况下性能会下降。这一发现表明，τ假设并不能完全解释制动控制。
