The human eye can physically perceive millions of colours. But we don't all recognise these colours in the same way. Some people can't see differences in colours – so called colour blindness – due to a defect or absence of the cells in the retina that are sensitive to high levels of light: the cones. But the distribution and density of these cells also varies across people with 'normal vision', causing us all to experience the same colour in slightly different ways.
人类的肉眼能感知上百万种色彩,却并非能一一辨别出来。有些人无法分辨色彩间的差异,俗称色盲,因为他们的视网膜中缺乏一种对波长较长的光线十分敏感的视锥细胞。不过就算不是色盲,每个人看同一种颜色时也稍有区别,因为视锥细胞的分布和密度是因人而异的。
Besides our individual biological make up, colour perception is less about seeing what is actually out there and more about how our brain interprets colours to create something meaningful. The perception of colour mainly occurs inside our heads and so is subjective – and prone to personal experience.
除了这种个体生理上对颜色的修正,人类的色彩感知不仅仅是看清外部世界到底什么样,更是关乎我们的大脑如何阐释这些色彩,以对事物分门别类,赋予意义。色彩的概念主要出现在我们的脑海中,因而是主观的,能为个人经验所左右。
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