Judging an unfamiliar object's distance from its retinal image size.
Judging an unfamiliar object's distance from its retinal image size.
复制标题
根据不熟悉物体的视网膜图像大小来判断其距离。
DOI：
10.1167/11.9.10
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发表时间：
2011
影响因子：
1.8
通讯作者：
J. Smeets
中科院分区：
文献类型：
--
作者：
R. Sousa;E. Brenner;J. Smeets
我们如何知道物体有多远？如果一个物体的大小是已知的，它的视网膜图像的大小可以用来判断它的距离。在某种程度上，不熟悉物体的视网膜图像大小也可以用来判断它的距离，因为有些物体的大小比其他物体的大小更有可能。为了检验有关物体大小的假设是否用于判断距离，我们让受试者在完全黑暗的情况下指示虚拟立方体的距离。在单独的会议中，模拟立方体大小在不同的演示中略有不同或差异很大。当模拟立方体较小时，大多数受试者表示更远的距离，表明他们使用视网膜图像大小来判断距离。被认为最有可能的立方体尺寸取决于先前试验中的模拟立方体。此外，受试者依赖于视网膜图像大小的两倍时，模拟立方体大小的范围是小的。我们的结论是，在以前的试验中感知的立方体大小的可变性影响的大小范围，被认为是可能的。
How do we know how far an object is? If an object's size is known, its retinal image size can be used to judge its distance. To some extent, the retinal image size of an unfamiliar object can also be used to judge its distance, because some object sizes are more likely than others. To examine whether assumptions about object size are used to judge distance, we had subjects indicate the distance of virtual cubes in complete darkness. In separate sessions, the simulated cube size either varied slightly or considerably across presentations. Most subjects indicated a further distance when the simulated cube was smaller, showing that they used retinal image size to judge distance. The cube size that was considered to be most likely depended on the simulated cubes on previous trials. Moreover, subjects relied twice as strongly on retinal image size when the range of simulated cube sizes was small. We conclude that the variability in the perceived cube sizes on previous trials influences the range of sizes that are considered to be likely.