Visual features that vary together over time group together over space
Visual features that vary together over time group together over space
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DOI：
10.1038/414
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发表时间：
1998-06-01
影响因子：
25
通讯作者：
Lee, SH
中科院分区：
文献类型：
--
作者：
Alais, D;Blake, R;Lee, SH
视觉系统认为物体是连贯的，即使某些部分是隐藏的或不连续的。如何从许多附近对象的局部特征构造这种表示被称为“绑定问题”。在这里，我们在几个漂移光栅中操纵对比度，这些光栅可以被视为独立的物体或单个物体的一部分。在时间上相关的对比调制增强了感知相干性，而不相关的调制削弱了感知相干性。据推测，相关的对比调制在皮层神经元中产生相关的反应。因此，我们的结果与神经活动的时间相关性对特征绑定很重要的假设是一致的。
The visual system perceives objects as coherent even when some parts are hidden or discontinuous. How this representation is constructed from local features of many nearby objects is termed the 'binding problem.' Here we manipulate contrast in several drifting gratings that can be perceived as either independent objects or parts of a single object. Contrast modulations that are correlated in time enhance perceptual coherence, whereas uncorrelated modulations impair coherence. Presumably, correlated contrast modulations produce correlated responses in cortical neurons. Therefore, our results are consistent with the hypothesis that temporal correlation of neural activity is important for feature binding.