Chapter 4 book notes

Chapter 4 book notes - Chapter 4 book notes Sensation- the...

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Chapter 4 book notes Sensation- the stimulation of sense organs Perception- the selection, organization and interpretation of sensory input Sensation involves the absorption of energy, such as light or sound waves, by sensory organs, like eyes or ears Perception involves organizing and translating sensory input into something meaningful Psychophysics- the study of how physical stimuli are translated into psychological experience Threshold- dividing point between energy levels that do and do not have a detectable effect Absolute threshold- for a specific type of sensory input is the minimum stimulus intensity that an organism can detect Vision-> candle flame seen at 30 miles on a dark clear night Hearing-> tick of a watch under quiet conditions at 20 feet Taste-> one teaspoon of sugar in two gallons of water Smell-> one drop of perfume diffused into an entire volume of a six room apartment Touch-> the wing of a fly falling on your cheek from the distance of 1 cm Just Noticeable Difference- the smallest difference in stimulus intensity that a specific sense can detect Signal detection theory- proposes that the detection of stimuli involves decision processes as well as sensory processes, which are both influenced by a variety of factors besides stimulus intensity
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This note was uploaded on 09/19/2011 for the course PSYCH 230 taught by Professor Phillips during the Spring '08 term at Iowa State.

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Chapter 4 book notes - Chapter 4 book notes Sensation- the...

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