a lot of misinformation about the opponent process theory of color perception out there
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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