Rats, nets, maps, and the emergence of place cells
Rats, nets, maps, and the emergence of place cells
复制标题
老鼠、网、地图和位置细胞的出现
DOI：
--
复制
发表时间：
1992
期刊：
影响因子：
--
通讯作者：
D. Parisi
中科院分区：
文献类型：
--
作者：
A. Treves;O. Miglino;D. Parisi
我们通过计算机模拟研究由几个感觉、中间和运动单元组成的小网络在空间中的运动，这些单元由初始随机强度的前馈连接连接起来。通过随机分化和选择性繁殖施加的进化压力，可以迫使这些对象适应执行类似于研究大鼠海马区功能的基本导航任务。适应过程中产生的连接强度被证明为中间单位提供了类似于大鼠海马区定位细胞的反应特征。这些结果表明，在任何用于解决简单导航任务的最小电路中，“位置”单元都很容易出现，并突显了在使用这些任务探索海马体结构和功能时，考虑所需记忆性能的复杂性，而不是涉及相对琐碎的空间“计算”的重要性。
We study through computer simulations the motion in space of small networks consisting of a few sensory, intermediate, and motor units linked by feedforward connections of initially random strengths. Evolutionary pressure, exerted through random differentiation and selective reproduction, can force such objects to adapt to perform elementary navigation tasks similar to those used in investigating hippocampal function in rats. The connection strengths resulting from the adaptation process are shown to provide intermediate units with response characteristics similar to those of place cells found in the rat hippocampus. These results illustrate the ease with which “place” units emerge in any minimal circuitry geared to solve simple navigation tasks, and highlight the importance of considering the complexity of the memory performance required, rather than the relatively trivial spatial “computations” involved, while using those tasks to explore hippocampal structure and function.