ON THE COMPUTATIONAL ARCHITECTURE OF THE NEOCORTEX .2. THE ROLE OF CORTICOCORTICAL LOOPS
ON THE COMPUTATIONAL ARCHITECTURE OF THE NEOCORTEX .2. THE ROLE OF CORTICOCORTICAL LOOPS
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DOI：
10.1007/bf00198477
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发表时间：
1992-01-01
影响因子：
1.9
通讯作者：
MUMFORD, D
中科院分区：
文献类型：
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作者：
MUMFORD, D
本文是先前一篇论文的续篇，那篇论文提出丘脑具有积极作用，即通过丘脑 - 皮质回路整合在皮质中形成的多种假设。在本文中，我提出了一个关于两个皮质区域之间相互的、拓扑结构通路作用的假设，其中一个区域通常是“较高”区域，处理关于世界的更抽象信息，另一个是“较低”区域，处理更具体的数据。较高区域试图通过从其深部锥体细胞向较低区域发回最适合低层次视角的模板重建，使其抽象概念与从较低区域接收的数据相匹配。较低区域则试图将从较高区域接收的对其视角的重建与其自身所了解的情况相协调，并从其浅部锥体细胞发回其数据中未被较高区域预测到的特征。整个计算是在所有区域同时工作的情况下进行的，但由各种自上而下和自下而上的回路中的同步活动来确定顺序。本文综述了支持这一理论的证据，并提出了实验测试。本文的第三部分将探讨这些观点在额叶的扩展。
This paper is a sequel to an earlier paper which proposed an active role for the thalamus, integrating multiple hypotheses formed in the cortex via the thalamo-cortical loop. In this paper, I put forward a hypothesis on the role of the reciprocal, topographic pathways between two cortical areas, one often a "higher" area dealing with more abstract information about the world, the other 'lower', dealing with more concrete data. The higher area attempts to fit its abstractions to the data it receives from lower areas by sending back to them from its deep pyramidal cells a template reconstruction best fitting the lower level view. The lower area attempts to reconcile the reconstruction of its view that it receives from higher areas with what it knows, sending back from its superficial pyramidal cells the features in its data which are not predicted by the higher area. The whole calculation is done with all areas working simultaneously, but with order imposed by synchronous activity in the various top-down, bottom-up loops. Evidence for this theory is reviewed and experimental tests are proposed. A third part of this paper will deal with extensions of these ideas to the frontal lobe.