An important step in the processing of visual patterns is the segmentation of the retinal image. Neuronal responses evoked by the contours of individual objects need to be identified and associated for further joint processing. These grouping operations are based on a number of Gestalt criteria. Here we report that connections in the visual cortex of the cat exhibit a highly significant anisotropy, preferentially linking neurons activated by contours that have similar orientation and are aligned colinearly. These anatomical data suggest a close relation between the perceptual grouping criterion of colinearity and the topology of tangential intracortical connections. We propose that tangential intracortical connections support perceptual grouping by modulating the saliency of distributed cortical responses in a context-dependent way. The present data are compatible with the hypothesis that the criteria for this grouping operation are determined by the architecture of the tangential connections.

译文

视觉图案处理中的一个重要步骤是视网膜图像的分割。需要识别并关联单个物体轮廓引起的神经元反应,以进行进一步的关节处理。这些分组操作基于许多格式塔标准。在这里,我们报告说,猫的视觉皮层中的连接表现出高度显着的各向异性,优先连接由具有相似方向且对齐的轮廓激活的神经元。这些解剖学数据表明共线性的感知分组标准与切向皮质内连接的拓扑之间存在密切关系。我们建议,切向皮质内连接通过以上下文相关的方式调节分布式皮质反应的显着性来支持感知分组。当前数据与以下假设兼容: 该分组操作的标准由切向连接的体系结构确定。

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