Time course of grouping of shape by perceptual closure: Effects of spatial proximity and collinearity
Time course of grouping of shape by perceptual closure: Effects of spatial proximity and collinearity
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DOI：
10.3758/pp.70.5.818
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发表时间：
2008-07-01
期刊：
影响因子：
--
通讯作者：
Kimchi, Ruth
中科院分区：
文献类型：
--
作者：
Hadad, Bat-Sheva;Kimchi, Ruth
在三个实验中，我们用启动匹配任务考察了知觉闭合对形状分组的时间过程。诱导闭合轮廓之间的间隙大小不一。此外，根据沿闭合等高线的间隙分布（发生在直线等高线段上或在等高线方向变化点上），共线性存在或不存在。在没有共线性的情况下，在空间近的碎片上观察到形状的早期启动，但在空间远的碎片上没有。当共线性可用时，在短暂曝光下启动空间近距离和空间远距离碎片的形状。这些结果表明，在没有共线性的情况下，空间接近对于通过感知闭合快速分组形状至关重要，但当诱导闭合的片段在空间上较远时，共线性有助于形状的快速分组。此外，只有当共线片段在空间上接近时，形状启动才会持续一段时间，这表明形状的稳定表征取决于共线片段和空间接近性。
We examined time course of grouping of shape by perceptual closure in three experiments using a primed matching task. The gaps between the closure-inducing contours varied in size. In addition, depending on the distribution of the gaps along the closure-inducing contours-occurring at straight contour segments or at the point of change in contour direction-collinearity was either present or absent. In the absence of collinearity, early priming of the shape was observed for spatially close fragments, but not for spatially distant fragments. When collinearity was available, the shape of both spatially close and spatially distant fragments was primed at brief exposures. These results suggest that spatial proximity is critical for the rapid grouping of shape by perceptual closure in the absence of collinearity, but collinearity facilitates the rapid grouping of shape when the closure-inducing fragments are spatially distant. In addition, shape priming persisted over time only when the collinear fragments were spatially close, suggesting that a stable representation of shape depends both on collinearity and spatial proximity between the closure-inducing fragments.