a lot of misinformation about the opponent process theory of color perception out there
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oh yikes look at that diagram even if this person were right about afterimages, the picture straight up swaps the l and s cones
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but ya trichromacy is what you need for complementary afterimages. the myth repeated here is esp weird bc you can literally just check that green gives a magenta negative, cyan gives redpic.twitter.com/TkhwmI0gXz
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opponent process at best is a model of why yellow doesn't 'feel' reddish-green like orange feels reddish-yellow; if there is an afterimage effect from opponent rebound or something its a very subtle correction and hard to measure
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this guy gets it http://journals.sagepub.com/doi/pdf/10.1177/2158244016682478 …pic.twitter.com/tImjLgx3jh
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