ESTIMATES OF TIME TO CONTACT BASED ON CHANGING SIZE AND CHANGING TARGET VERGENCE
ESTIMATES OF TIME TO CONTACT BASED ON CHANGING SIZE AND CHANGING TARGET VERGENCE
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DOI：
10.1068/p220549
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发表时间：
1993-01-01
期刊：
影响因子：
1.7
通讯作者：
HEUER, H
中科院分区：
文献类型：
--
作者：
HEUER, H
表观恒定速度的方法产生的轮廓圆的大小和/或dichoptically提出的圆在一个物理上恒定的距离从受试者的横向分离的变化。圆的横向间隔限定了目标聚散度，其在近端对应于眼睛聚散度和（绝对）视网膜视差的组合。在第一个实验中，接触时间的估计被发现取决于不断变化的大小和不断变化的目标聚散度;在冲突的信息的情况下，改变大小原来是更强大的刺激。在第二个实验中，刺激物的大小是不同的。相对较强的影响，改变大小的估计接触的时间再次发现较大的刺激对象，但较小的刺激对象改变目标聚散度变得更加强大。这两个实验的结果表明，接触时间的估计是不是唯一的改变大小确定的，因为似乎是暗示的一些测试的所谓的“tau假说”，但他们是基于多个来源的信息，有具体的情况下的影响估计。
Apparent constant-velocity approaches of an outline circle were generated by changing the size and/or the lateral separation of dichoptically presented circles at a physically constant distance from subjects. The lateral separation of the circles defines target vergence which corresponds proximally to combinations of ocular vergence and (absolute) retinal disparity. In the first experiment, estimates of time to contact were found to depend both on changing size and on changing target vergence; in the case of conflicting information, changing size turned out to be the more powerful stimulus. In the second experiment, the size of the stimulus object was varied. The relatively stronger influence of changing size on estimates of time to contact was again found for the larger stimulus objects, but for the smaller stimulus objects changing target vergence became more powerful. The results of both experiments show that estimates of time to contact are not uniquely determined by changing size, as seems to be implied by some tests of the so-called 'tau hypothesis', but that they are based on multiple sources of information that have situationally specific effects on the estimates.