Functional connectivity between simple cells and complex cells in cat striate cortex
Functional connectivity between simple cells and complex cells in cat striate cortex
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DOI：
10.1038/1609
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发表时间：
1998-09-01
影响因子：
25
通讯作者：
Martinez, LM
中科院分区：
文献类型：
--
作者：
Alonso, JM;Martinez, LM
在猫的初级视皮层中，神经元根据其反应特性分为简单细胞和复杂细胞两大类。根据层次模型，复杂的感受野来自于具有相似取向偏好的简单细胞的会聚输入。该模型得到了解剖学研究的有力支持，研究表明，许多复杂的细胞位于第四层简单细胞轴突的范围内，但在大多数丘脑轴突的范围之外。然而，该模型的生理学证据仍然难以捉摸。在这里，我们表明，第四层简单的细胞和第二层和第三层复杂的细胞显示相关的发射与单突触连接一致。正如层次模型所预期的那样，所有的连接都是从简单细胞到复杂细胞的方向，最常见的是在具有相似方向偏好的细胞之间。
In the cat primary visual cortex, neurons are classified into the two main categories of simple cells and complex cells based on their response properties. According to the hierarchical model, complex receptive fields derive from convergent inputs of simple cells with similar orientation preferences. This model received strong support from anatomical studies showing that many complex cells lie within the range of layer IV simple-cell axons but outside the range of most thalamic axons. Physiological evidence for the model, however, has remained elusive. Here we demonstrate that layer IV simple cells and layer II and III complex cells show correlated firing consistent with monosynaptic connections. As expected from the hierarchical model, all connections were in the direction from the simple cell to the complex cell, most frequently between cells with similar orientation preferences.