Paradoxical perception of object identity in visual motion.
Paradoxical perception of object identity in visual motion.
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DOI：
10.1016/j.visres.2017.04.008
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发表时间：
2017-07
期刊：
影响因子：
1.8
通讯作者：
van Leeuwen C
中科院分区：
文献类型：
--
作者：
Zharikova A;Gepshtein S;van Leeuwen C
在知觉组织过程中，不完全的光刺激可以唤起具有不同知觉同一性的完整物体的经验。根据感知组织的一个众所周知的原则，由较短的空间距离分开的刺激部分更有可能作为相同感知身份的部分出现。虽然这一原则的接近已被证实在许多研究中的感知分组在静态显示器，我们表明，它并不推广到感知对象的身份在动态显示器，其中的部分是由空间和时间的距离分开。我们使用包含多个移动部件的模糊显示，并且可以通过两种方式感知：作为两个逐渐改变其大小的大对象或作为多个彼此独立旋转的较小对象。在长距离和短距离上的重叠对应于分别对大物体和小物体的感知。我们发现，分组在长距离往往是首选分组在短距离，对邻近原则的预测。即使在高亮度对比度下观察到这些效应，我们表明，它们与在亮度对比度阈值下获得的结果一致，与有效运动测量理论的预测一致。这表明，对物体同一性的感知可以用神经经济原则来解释，而不是用经验的邻近原则来解释。
In the course of perceptual organization, incomplete optical stimulation can evoke the experience of complete objects with distinct perceptual identities. According to a well-known principle of perceptual organization, stimulus parts separated by shorter spatial distances are more likely to appear as parts of the same perceptual identity. Whereas this principle of proximity has been confirmed in many studies of perceptual grouping in static displays, we show that it does not generalize to perception of object identity in dynamic displays, where the parts are separated by spatial and temporal distances. We use ambiguous displays which contain multiple moving parts and which can be perceived two ways: as two large objects that gradually change their size or as multiple smaller objects that rotate independent of one another. Grouping over long and short distances corresponds to the perception of the respectively large and small objects. We find that grouping over long distances is often preferred to grouping over short distances, against predictions of the proximity principle. Even though these effects are observed at high luminance contrast, we show that they are consistent with results obtained at the threshold of luminance contrast, in agreement with predictions of a theory of efficient motion measurement. This is evidence that the perception of object identity can be explained by a principle of neural economy rather than by the empirical principle of proximity.
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