Color Vision in the Peripheral Retina

人类的色觉在眼睛视网膜的一个小中心区域是最好的。这个区域被称为中央凹，包含了非常高比例的光感受器，称为视锥细胞，专门用于不同波长的可见光谱。视锥细胞也存在，但在中央凹外的分布并不密集，我们对中央凹过程（如“颜色对抗”机制）是否在这些更外围的区域起作用知之甚少，在这些区域，有更高比例的杆状光感受器不是专门用于颜色的。本研究采用一种新颖的方法，将最新的解剖学数据与定量心理物理实验相结合，以确定波长和强度在中央凹外刺激的色觉中的作用。结果将为我们的中央凹色觉模型是否普遍有效或需要修改提供一个很好的测试，并且将不仅对视觉神经科学，而且对人工视觉和感知心理学产生影响。

Color vision in humans is best in a small central region of the retina of the eye. This region, called the fovea, contains a very high proportion of the photoreceptors called cone cells, which are specialized for different wavelengths of the visible spectrum. Cone cells are present but not so densely packed outside the fovea, and we have very little understanding of whether the foveal processes such as "color opponent" mechanisms work in these more peripheral areas where there is a far higher proportion of the rod photoreceptors that are not specialized for color. This study uses a novel approach integrating the latest anatomical data with quantitative psychophysical experiments to determine the role of wavelength and intensity in color vision for stimuli striking outside the fovea. Results will provide an excellent test whether our models for foveal color vision are generally valid or need modification, and will have an impact not only on visual neuroscience, but on artificial vision and the psychology of perception.