Erkelens Casper J, van Ee Raymond
Helmholtz Institute, Utrecht University P.O. Box 80.000, 3508 TA, Utrecht, The Netherlands.
Vision Res. 2002 Apr;42(9):1157-63. doi: 10.1016/s0042-6989(01)00280-2.
During binocular fixation, the eyes usually point in different directions, and yet, each object is judged to lie in a single direction. It is commonly believed that a particular location in the head serves as the origin for such directional judgments. This location is known as the cyclopean eye. We argue here that observers can judge visually perceived directions from angular information alone, and do not require positional information supplied by a cyclopean eye. We show that experimental findings reported as evidence for the cyclopean concept can also be explained solely by angular information without the need for a cyclopean eye. Recent findings concerning binocular shape perception and the cyclopean illusion demonstrate that binocular perception is incompatible with vision from a single vantage point. The concept of the cyclopean eye is sometimes inappropriate and always irrelevant as far as vision is concerned.
在双眼注视过程中，双眼通常指向不同方向，但每个物体都被判断为位于单一方向。人们普遍认为，头部的某个特定位置充当了这种方向判断的原点。这个位置被称为独眼眼。我们在此认为，观察者仅通过角度信息就能判断视觉感知方向，而不需要独眼眼提供的位置信息。我们表明，作为独眼眼概念证据所报道的实验结果也可以仅用角度信息来解释，而无需独眼眼。最近关于双眼形状感知和独眼幻觉的研究结果表明，双眼感知与从单一有利位置的视觉不兼容。就视觉而言，独眼眼的概念有时是不恰当的，而且总是无关紧要的。
