01:830:301 Lecture Notes - Lecture 17: Color Vision, Dichromacy, Trichromacy

• School: Rutgers University
• Department: Psychology
• Course: 01:830:301
• Professor: Singh

Document Summary

Trichromacy is correct at the leve of the retina (3 cone types) Experimental prediction: human observers should be able to match the appearance of any color just by mixing in r,g,b. Oponency theory is correct at the level lgn and v1. Building opponent axes from the 3 cone types. Take the sum of l and m cone responses. If i looked only at s and m cones, it would only tell me if i had more red or green compare the strength of the response of l and m cones (talk about ratio or difference) Key point is just compare (take the difference) of l cone responses and the m cone responses (suppose the response difference is 0/equal, it would mean that it is achromatic/gray) Take the difference between l and m cone responses. If the l and m cones are responding equally gray patch (achromatic) If the l - m cones are positive.