Linsker R
Proc Natl Acad Sci U S A. 1986 Nov;83(22):8779-83. doi: 10.1073/pnas.83.22.8779.
Orientation-selective cells--cells that are selectively responsive to bars and edges at particular orientations--are a salient feature of the architecture of mammalian visual cortex. In the previous paper of this series, I showed that such cells emerge spontaneously during the development of a simple multilayered network having local but initially random feedforward connections that mature, one layer at a time, according to a simple development rule (of Hebb type). In this paper, I show that, in the presence of lateral connections between developing orientation cells, these cells self-organize into banded patterns of cells of similar orientation. These patterns are similar to the "orientation columns" found in mammalian visual cortex. No orientation preference is specified to the system at any stage, none of the basic developmental rules is specific to visual processing, and the results emerge even in the absence of visual input to the system (as has been observed in macaque monkey).
方向选择性细胞——对特定方向的线条和边缘有选择性反应的细胞——是哺乳动物视觉皮层结构的一个显著特征。在本系列的上一篇论文中，我表明，在一个具有局部但最初随机前馈连接的简单多层网络的发育过程中，这类细胞会自发出现，这些连接会根据一个简单的（赫布型）发育规则，一层一层地成熟。在本文中，我表明，在发育中的方向细胞之间存在侧向连接的情况下，这些细胞会自组织成具有相似方向的细胞带模式。这些模式类似于在哺乳动物视觉皮层中发现的“方向柱”。在任何阶段都没有给系统指定方向偏好，没有任何基本发育规则是视觉处理所特有的，而且即使在系统没有视觉输入的情况下（正如在猕猴中观察到的那样）也会出现这些结果。
