PSYC3318 Lecture Notes - Lecture 5: Lateral Geniculate Nucleus, Color Theory, Wavelength
Document Summary
Trichromary- the theory that the color of any light is defined in our visual system by the relationships of 3 numbers, the otuputs of 3 receptor types now known to the 3 cones. Metamers- all aobut output- different mixture of wavelengths that look identical- any pair of stimuli perceived as identical. Lateral geniculate nucleus- cells that are maximally stimulated by spots of light. Cone opponent cell- neuron whose output is based on a difference between sets of coes. 3 cone types detect a range of wave lengths discrimination. Melamer show cone output is important even if physical wavelengths represented are different. Retine and lgn contain cells to repachage that into cone opponent different signals. This output is all the brain has to work with- we can discriminate 2 million colours. Colour appearance- colour space- 3d space that describes all colours- several possible color spaces. Rgb space- defining outputs of long medium and short wave length light.
