Andersen G J, Cisneros J, Atchley P, Saidpour A
Department of Psychology, University of California, Riverside 92521, USA.
J Exp Psychol Hum Percept Perform. 1999 Feb;25(1):256-69. doi: 10.1037//0096-1523.25.1.256.
In the present study an alternative analysis to tau was considered that was based on perceived speed and size and that assumed constant deceleration for the detection of collision events. Observers were presented with displays simulating a 3-D environment with obstacles in the path of observer motion. During the trial, observer motion decelerated at a constant rate and was followed by a blackout prior to the end of the display. Observers had to detect which trials resulted in a collision. The results indicate that collision detection varied as a function of the size of the obstacles, observer speed, and edge rate--findings not predicted by an analysis of tau. The results suggest that observers use an analysis based on speed and size information. A model that assumes constant deceleration is proposed for braking control.
在本研究中，考虑了一种对τ的替代分析方法，该方法基于感知速度和大小，并假设在检测碰撞事件时减速恒定。向观察者呈现模拟三维环境的显示器，其中在观察者运动路径上有障碍物。在试验期间，观察者的运动以恒定速率减速，并且在显示器结束前会出现黑屏。观察者必须检测哪些试验导致了碰撞。结果表明，碰撞检测随障碍物大小、观察者速度和边缘速率而变化——这些发现是τ分析所无法预测的。结果表明，观察者使用基于速度和大小信息的分析方法。提出了一种假设减速恒定的模型用于制动控制。
