Redish A D, Touretzky D S
School of Computer Science, Carnegie Mellon University, Pittsburgh, PA 15213.
Biol Cybern. 1994;71(4):307-17. doi: 10.1007/BF00239618.
During a reaching task, the population vector is an encoding of direction based on cells with cosine response functions. Scaling the response by a magnitude factor produces a vector encoding, enabling vector arithmetic to be performed by the summation of firing rates. We show that the response properties of selected populations of cells in the primary motor cortex and area 5 can be explained in terms of arithmetic relationships among load, goal, and motor command vectors. Our computer simulations show good agreement with single-cell recording data.
在伸手抓取任务中，总体向量是基于具有余弦响应函数的细胞对方向的一种编码。通过一个大小因子对响应进行缩放会产生一个向量编码，从而能够通过发放率的求和来执行向量运算。我们表明，初级运动皮层和5区中选定细胞群体的响应特性可以根据负载、目标和运动命令向量之间的算术关系来解释。我们的计算机模拟与单细胞记录数据显示出良好的一致性。
