Wehrhahn C
Max-Planck-Institut für biologische Kybernetik, Tübingen, Federal Republic of Germany.
Biol Cybern. 1987;57(4-5):213-5. doi: 10.1007/BF00338814.
Color vision in humans is independent over a wide range of the spectral composition of the illuminating light (Young 1807; Hering 1879). The retinex theory accounts for this color constancy by assuming that for each of the three waveband channels determined by the retinal cones a global lightness record of the scene is first computed by the visual system. The three records then serve to generate color at every point (Land 1983). Where do these computations take place? In this report a scene consisting of fourteen colored fields was viewed while one band of wavelengths enters one eye and a different band enters the other (dichoptic case) or while both bands enter both eyes (normal case) under otherwise identical conditions. The perceived color of every field is very similar in both cases although the physical stimulation of the eyes differs. It is also found that color constancy is maintained under dichoptic conditions. The results show that the cortex is crucial for the computation of color.
人类的色觉在很大范围的照明光光谱组成下都是独立的（杨1807年；赫林1879年）。视网膜皮层理论解释了这种颜色恒常性，该理论假设，对于由视网膜视锥细胞确定的三个波段通道中的每一个，视觉系统首先计算场景的全局亮度记录。然后，这三个记录用于在每个点生成颜色（兰德1983年）。这些计算发生在哪里？在本报告中，在其他条件相同的情况下，当一个波长带进入一只眼睛而另一个不同的波长带进入另一只眼睛（双眼分视情况）或当两个波长带都进入两只眼睛（正常情况）时，观察了一个由14个彩色区域组成的场景。尽管眼睛受到的物理刺激不同，但在这两种情况下，每个区域的感知颜色都非常相似。还发现，在双眼分视条件下颜色恒常性得以保持。结果表明，皮层对于颜色计算至关重要。
