Frost B J, Wylie D R, Wang Y C
Department of Physiology, Queen's University, Kingston, Ontario, Canada.
Vision Res. 1990;30(11):1677-88. doi: 10.1016/0042-6989(90)90152-b.
This paper reviews electrophysiological studies of motion processing in the tectofugal and accessory optic systems (AOS), and suggests these are specialized respectively for the analysis of object motion and self motion. Evidence is presented which shows that directionally specific neurons in the tectofugal system process local motion and are inhibited by wholefield motion. These cells respond to kinematograms and moving occlusion edges and may therefore also be involved in figure-ground segregation and depth perception. In contrast, cells in the nucleus of the basal optic root (nBOR), a component of the AOS, respond best to large slowly moving patterns. These cells are directionally selective preferring either upward, downward or backward directions. In the posterior region of the nBOR some cells have been found which are binocular and prefer either the same or opposite directions of motion in the two eyes. Thus, these cells are tuned to respond optimally to either translational or rotational components of wholefield motion and it is suggested these may be involved in the control of posture and locomotion.
本文回顾了顶盖离中系统和辅助视觉系统（AOS）中运动处理的电生理研究，并指出这些系统分别专门用于分析物体运动和自身运动。文中给出的证据表明，顶盖离中系统中具有方向特异性的神经元处理局部运动，并受到全域运动的抑制。这些细胞对运动图像和移动的遮挡边缘有反应，因此也可能参与图形-背景分离和深度感知。相比之下，作为AOS组成部分的基底视根核（nBOR）中的细胞，对大的缓慢移动模式反应最佳。这些细胞具有方向选择性，更喜欢向上、向下或向后的方向。在nBOR的后部区域，发现了一些双眼细胞，它们更喜欢两眼相同或相反的运动方向。因此，这些细胞被调整为对全域运动的平移或旋转分量做出最佳反应，有人认为这些细胞可能参与姿势和运动的控制。
