Configuration influence on crowding
Configuration influence on crowding
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DOI：
10.1167/7.2.4
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发表时间：
2007-01-01
影响因子：
1.8
通讯作者：
Sagi, Dov
中科院分区：
文献类型：
--
作者：
Livne, Tomer;Sagi, Dov
测试了构型对视觉拥挤的影响。八个Gabor补丁围绕着一个中心补丁，以一种不同于其内部安排（光滑轮廓vs.随机）的方式排列，同时仍然保持目标和侧翼之间的成对关系。测量了中央Gabor的定向辨别和对比度检测。这些测量结果揭示了不同结构产生的拥挤程度的差异，特别是在辨别任务上。当使用随机配置时，拥挤效应更强，而当使用光滑配置时，拥挤效应显著降低。这些结果表明，拥挤对偏心率和靶侧分离有典型的依赖性，而与构型效应无关。控制侧翼球员的局部方向可以处理效果的本质。发现它对空间关系很敏感，并不代表局部方向估计的简单平均。我们的结果表明，拥挤在已经提取了配置信息的水平上运行。我们将这一切与感知的客体性联系起来。
The influence of configuration on visual crowding was tested. Eight Gabor patches surrounding a central one were arranged in a way that created several global configurations differing by their internal arrangements (smooth contour vs. random), while still preserving pairwise relationships between the target and flankers. Orientation discrimination and contrast detection of the central Gabor were measured. These measurements revealed differences in the magnitude of crowding produced by the different configurations, especially on the discrimination task. The crowding effect was stronger when random configurations were used and was reduced considerably when a smooth one was used. These results showed the typical dependence of crowding on eccentricity and target-flanker separation, which was independent of the configural effect. Controlling flankers' local orientation allowed addressing the nature of the effect. It was found to be sensitive to spatial relations and did not represent a simple averaging of local orientation estimates. Our results show that crowding operates at a level where configuration information has already been extracted. We relate all this to the object-based nature of perception.