Greve D, Grossberg S, Guenther F, Bullock D
Center for Adaptive Systems, Boston University, MA 02215.
Acta Psychol (Amst). 1993 Mar;82(1-3):115-38. doi: 10.1016/0001-6918(93)90008-f.
This article describes how corollary discharges from outflow eye movement commands can be transformed by two stages of opponent neural processing into a head-centered representation of 3-D target position. This representation implicitly defines a cyclopean coordinate system whose variables approximate the binocular vergence and spherical horizontal and vertical angles with respect to the observer's head. Various psychophysical data concerning binocular distance perception and reaching behavior are clarified by this representation. The representation provides a foundation for learning head-centered and body-centered invariant representations of both foveated and non-foveated 3-D target positions. It also enables a solution to be developed of the classical motor equivalence problem, whereby many different joint configurations of a redundant manipulator can all be used to realize a desired trajectory in 3-D space.
本文描述了来自眼球运动指令输出的推论放电如何通过两个阶段的对抗神经处理转化为以头部为中心的三维目标位置表示。这种表示隐含地定义了一个独眼坐标系，其变量近似于相对于观察者头部的双眼聚散以及水平和垂直球面角度。关于双眼距离感知和伸手行为的各种心理物理学数据通过这种表示得到了阐明。这种表示为学习以头部为中心和以身体为中心的注视和非注视三维目标位置的不变表示提供了基础。它还使得能够解决经典的运动等效问题，即冗余操纵器的许多不同关节配置都可以用于在三维空间中实现所需的轨迹。
