Temporal correlations of orientations in natural scenes
Temporal correlations of orientations in natural scenes
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DOI：
10.1016/s0925-2312(02)00789-0
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发表时间：
2003-06-01
期刊：
影响因子：
6
通讯作者：
König, P
中科院分区：
文献类型：
--
作者：
Kayser, C;Einhäuser, W;König, P
视觉系统在其自然输入上有效地执行复杂的操作，例如视觉分组。为了研究这种适应自然的刺激，我们测量的时空相互作用的方向与自然的时间结构记录使用相机安装到一只猫的头部场景。我们发现长距离的空间和持久的时间相关性的取向与共线的相互作用是最普遍的，并随着时间的推移保存。相关性的空间范围对应于水平皮层连接的长度和相互作用的持续时间允许由相同的视觉事件共同激活的横向和自下而上的输入。(C)2003 Elsevier Science B.V.保留所有权利。
The visual system performs complicated operations such as visual grouping efficiently on its natural input. To study this adaptation to natural stimuli we measure spatio-temporal interactions of orientations in scenes with natural temporal structure recorded using a camera mounted to a cat's head. We find long range spatial and long lasting temporal correlations of orientations with collinear interactions being most prevalent and preserved over time. The spatial extent of correlations corresponds to the length of horizontal cortical connections and the temporal duration of the interactions allows co-activation of lateral and bottom up input by the same visual event. (C) 2003 Elsevier Science B.V. All rights reserved.