Chapter 5 - sensation howsenseorgansrespondtoexternal

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sensation how sense organs respond to external stimuli and transmit the responses to the brain
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difference threshold “jnd” (just noticeable difference) the minimum amount of change required in order to detect a difference between intensities of stimuli
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Vision: a candle flame seen at 30 miles on a dark, clear night Hearing: the tick of a clock at 20 feet under quiet conditions Taste: one teaspoon of sugar in 2 gal of water Smell: one drop of perfume diffused into the entire volume of six rooms Touch: the wing of a fly falling on your cheek from a distance of 1 centimeter Approximate Minimum Stimulus for Each Sense
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signal detection theory detecting a stimulus requires making a judgment about its presence or absence
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signal detection theory based on a subjective interpretation of ambiguous information
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: is there an early sign of cancer? patient’s age, sex, and family history? radiologist’s level of motivation and attention can effect judgment, however. . . Example
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Chapter 5 - sensation howsenseorgansrespondtoexternal

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