The effect of variability in other objects' sizes on the extent to which people rely on retinal image size as a cue for judging distance.
The effect of variability in other objects' sizes on the extent to which people rely on retinal image size as a cue for judging distance.
复制标题
其他物体大小的变化对人们依赖视网膜图像大小作为判断距离的线索的程度的影响。
DOI：
10.1167/12.10.6
复制
发表时间：
2012
影响因子：
1.8
通讯作者：
E. Brenner
中科院分区：
文献类型：
--
作者：
R. Sousa;J. Smeets;E. Brenner
视网膜图像的大小可以用来判断物体的距离，因为对于任何物体，人们都可以假设某些大小比其他大小更有可能。已经证明，在试验中，其他相同的目标对象的大小的可变性增加，减少了赋予视网膜图像大小作为距离提示的权重。在这里，我们研究了在判断距离时，不同颜色、方向或形状的物体大小的可变性增加是否降低了给予视网膜图像大小的权重。受试者必须指出模拟目标物体的3D位置。当不同颜色和不同方向的目标物体出现在许多模拟大小的目标物体时，视网膜图像大小作为判断目标立方体距离的线索的权重要小得多，但当不同形状的物体有许多模拟大小时则不是。我们还研究了增加周围环境中立方体大小的可变性是否会减少在判断距离时给予视网膜图像大小的权重。事实并非如此。我们的结论是，周围或不同物体大小的变化对人们依赖视网膜图像大小作为判断距离的线索的程度的影响可以忽略不计。
Retinal image size can be used to judge objects' distances because for any object one can assume that some sizes are more likely than others. It has been shown that an increased variability in the size of otherwise identical target objects over trials reduces the weight given to retinal image size as a distance cue. Here, we examined whether an increased variability in the size of objects of a different color, orientation, or shape reduces the weight given to retinal image size when judging distance. Subjects had to indicate the 3D position of a simulated target object. Retinal image size was given significantly less weight as a cue for judging the target cube's distance when differently colored and differently oriented target objects appeared in many simulated sizes but not when differently shaped objects had many simulated sizes. We also examined whether increasing the variability in the size of cubes in the surroundings reduces the weight given to retinal image size when judging distance. It does not. We conclude that variability in surrounding or dissimilar objects' sizes has a negligible influence on the extent to which people rely on retinal image size as a cue for judging distance.