Exam 2 Complete Questions With Answer

EXAM 2 COMPLETE QUESTIONS WITH ANSWER What is the function of color vision? ANSWER = Allows us to quickly and easily segregate a scene, identify which objects go where Trichromatic theory ANSWER = theory of color vision that proposes three types of cones: red, blue, and green Behavioral evidence for trichromatic theory ANSWER = Color matching experiments showed that 3 lights were necessary to create a metamer, therefore there must be 3 different color Physiological evidence for trichromatic theory ANSWER = Discovery of 3 types of cones, each with a sensitivity to different wavelengths of light Opponent-process theory ANSWER = the theory that opposing retinal processes (red-green, yellow-blue, whiteblack) enable color vision. For example, some cells are stimulated by green and inhibited by red; others are stimulated by red and inhibited by green Behavioral evidence for opponent-process theory ANSWER = No "illegal" colors and negative afterimages - No "bluish-yellow" or "reddish-green" Physiological evidence for opponent-process theory ANSWER = Discovery of color opponent neurons in LGN with circular-surround RF Problem of univariance ANSWER = The fact that an infinite set of different wavelength-intensity combinations can elicit exactly the same response from a single type of photoreceptorEXAM 2 COMPLETE QUESTIONS WITH ANSWER What is the function of color vision? ANSWER = Allows us to quickly and easily segregate a scene, identify which objects go where Trichromatic theory ANSWER = theory of color vision that proposes three types of cones: red, blue, and green Behavioral evidence for trichromatic theory ANSWER = Color matching experiments showed that 3 lights were necessary to create a metamer, therefore there must be 3 different color Physiological evidence for trichromatic theory ANSWER = Discovery of 3 types of cones, each with a sensitivity to different wavelengths of light Opponent-process theory ANSWER = the theory that opposing retinal processes (red-green, yellow-blue, whiteblack) enable color vision. For example, some cells are stimulated by green and inhibited by red; others are stimulated by red and inhibited by green Behavioral evidence for opponent-process theory ANSWER = No "illegal" colors and negative afterimages - No "bluish-yellow" or "reddish-green" Physiological evidence for opponent-process theory ANSWER = Discovery of color opponent neurons in LGN with circular-surround RF Problem of univariance ANSWER = The fact that an infinite set of different wavelength-intensity combinations can elicit exactly the same response from a single type of photoreceptor