• Any light stimulus that produces the equal activity across all three cones will be perceived as grey to ppl missing l or m cones • What trichromacy can explain o Color matching o Color mixing o Color vision deficits • What trichromacy cant explain o Three cones but 4 primary colors o Further evidence from visualization – imagine a reddish yellow or reddish blue but hard to imagine a reddish green ( not all colors can be combined) also from colorblindness: ppl who cant see red cant see green, ppl who cant see yellow cant see blue o Opponent process theory – 4 primary colors are organized into to opponent paris Red and green and yellow and blue Three different channels- cant perceive combo of red and green because it cant increase and decrease at the same time • Putting it all together o Both theories are true trichromatic and opponent processing • Why do we need multiple receptors? Test 3
This is the end of the preview.
access the rest of the document.
Opponent process theory, color matching, primary colors, Color vision deficits, projective geometry things