3 ms·

For the first, physical hues form a straight line continuum, from red to violet. The human eye samples these hues at three overlapping points (RGB) and then the

For the first, physical hues form a straight line continuum, from red to violet. The human eye samples these hues at three overlapping points (RGB) and then the visual pathway does some math to reinterpret RGB as a closed circle of hues we see in our visual field. For the second point, while monospectral light cannot produce magenta, you don't need multiple molecules to reflect multispectral light.

artiszt 5y ago
>the visual pathway does some math to reinterpret RGB as a closed circle of hues we see in our visual field< sort of, computation of 'contrast' so to speak, or, in broad terms, differences in wavelengths most likely done, foremost and in essence, in area V4, cortically. if damaged, cerebral achromatopsia [colour blindness results]. patients won't even see/perceive induced 'coloured' visual phenomena, such as phosphenes [Farady made a few quid by electro-shocking ppl, for instance in Jardin des Tuileries, Paris : electro-magnetc impulses applied transcranially to the occipital part of the brain can elicit, in some subjects, brief bright colourfull light sensations]