Provide an overview of the trichromatic and opponent-process theories of color vision, and resolve the "debate" between the two
What will be an ideal response?
The trichromatic theory proposes that the eye has three types of receptors, each responsive to one of the three primary colors of light: red, blue, and green. The eye then additively mixes different proportions of these three colors to produce the colors we see. The opponent-process theory proposes that color perception depends on receptors that make antagonistic responses to three pairs of colors. The three pairs of opponent colors are red-green, blue-yellow, and black-white.
Both theories are needed to adequately explain color vision. In the earliest stage of information processing, there are three types of cones, each responsive to a different band of wavelengths, consistent with trichromatic theory. In later stages, cells in the retina, the thalamus, and the visual cortex respond in opposite ways to complementary colors. Thus, color coding begins with a trichromatic process and then switches to an opponent process.
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a. dizygotic twins. b. monozygotic twins. c. mothers and daughters. d. fathers and sons.
The increase in the incidence of eating disorders such as anorexia nervosa and bulimia nervosa has been referred to as a "collision between our culture and our physiology.". The most accurate interpretation of this statement is that a. people have become too dependent on media determinations of beauty
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After sustaining brain damage, David had difficulty with his relationships, and he had conflict with people at work as well as with his family members and friends. What part of the brain did David damage?
A. occipital lobe B. primary somatosensory cortex C. prefrontal cortex D. Broca's area
Regarding stress management, which of the following statements is FALSE?
a. Humor reduces stress by helping to put things into perspective. b. Writing about your feelings tends to leave your mind clearer and also helps reduce stress. c. Stress can be reduced by deliberately doing things at a slower pace. d. Stress inoculation involves visualizing calm, relaxing, peaceful images in order to distract one from upsetting thoughts.