The spatiotemporal properties of visual completion measured by response classification.
The spatiotemporal properties of visual completion measured by response classification.
复制标题
通过响应分类测量视觉完成度的时空特性。
DOI：
10.1167/6.4.5
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发表时间：
2006
影响因子：
1.8
通讯作者：
Shubel,Erin
中科院分区：
文献类型：
--
作者：
Gold,JasonM;Shubel,Erin
视觉系统面临的一个经常性的问题是识别视觉场景中的部分遮挡对象。最近的实验表明，视觉系统参与了一个视觉完成的过程，在这个过程中，物体的隐藏部分被填充到视觉表征中。最近的实验还表明，这一完成过程可能有一个时间过程。在这里，我们研究了视觉完成的时空属性，观察者分类的数字定义的亮度定义或虚幻的轮廓，然后将其决定与外部添加的时空视觉噪声。这种“反应分类”技术使我们能够得到一个时空相关图（“分类电影”），揭示了观察者在刺激呈现期间在空间和时间的每个点上使用的位置。我们发现，观察者逐渐成为更多的影响，在对应于虚幻的轮廓在第一个175毫秒的刺激呈现的位置噪声。我们的结果是一致的想法，有一个时间过程的完成过程的顺序为10175毫秒。
A constant problem faced by the visual system is the identification of partly occluded objects within the visual scene. Recent experiments have demonstrated that the visual system engages in a process of visual completion, where the hidden parts of objects are filled into the visual representation. Recent experiments have also suggested that there may be a time course to this completion process. Here, we examined the spatiotemporal properties of visual completion by having observers classify figures defined by either luminance-defined or illusory contours and then correlating their decisions with externally added spatiotemporal visual noise. This “response classification” technique allowed us to derive a spatiotemporal correlation map (a “classification movie”) that revealed the locations used by observers at each point in space and time during the stimulus presentation. We found that observers gradually became more influenced by noise at locations corresponding to illusory contours across the first 175 ms of stimulus presentation. Our results are consistent with the idea that there is a time course to the completion process on the order of∼ 175 ms.