PSYC 2390 Lecture Notes - Lecture 13: Kodak, Fluorescent Lamp, Lateral Geniculate Nucleus

• School: University of Guelph
• Department: Psychology
• Course: PSYC 2390
• Professor: Lana Trick

Document Summary

Discovered that there are 3 diferent colour receptors: cones 3 types, receive 3 diferent wavelengths of light (red, green, blue) They can pick up other wavelengths if it"s extremely bright (some overlap) but not as well as what it"s made for. Red cones erythrolase (retinal + opsin with a diferent chain of amino acids), absorbs long wavelength light best. Green cones chlorolase (again, retinal + opsin with a diferent chain), absorbs medium wavelength light best but will pick p some long + short. Blue cones cyanolase (same), absorbs short wavelength light best. Don"t have one cone for each, but we make sense of the relative activity of all 3: ex. White = red, green, blue cones are all producing relatively the same level of activity: ex. We don"t have a colour catching cone for this, but it"s halfway b/w red and green, high levels of red and green cones but low level of blue activity = seeing yellow.