Lecture 8 - Sensation and Perception Psychophysics study of...

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Sensation and Perception
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Psychophysics study of how the physical properties of stimuli are translated into psychological events Sensation "how the world out there gets in” Perception “how the world gets interpreted and understood"
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Differences between sensation and perception Sensation is the physiology of the process. How our receptors and nerves physically represent our external environment Sensation refers to detection and encoding of stimuli It is peripherally based -- stays in the sense organ Perception is a brain event . how our brains organizes, analyzes, and interprets incoming information Sensation and perception are a continuous process.
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Psychophysics Terminology Absolute threshold minimum amount of stimulation that it takes for the stimulus to be perceived 50% of the time Examples 1 candle flame 30 miles away on a clear night 1 drop of perfume in a 3 room apartment the wing of a bee falling on your cheek from 1 cm a watch ticking from 20 feet away
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Subliminal stimulation 1956 controversy Two assumptions behind the subliminal market: 1) unconsciously we can sense subliminal stimuli 2) without our awareness, these stimuli have extraordinary suggestive powers
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Psychophysics Terminology
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This note was uploaded on 04/17/2008 for the course PSY 121 taught by Professor Whisenhunt during the Spring '08 term at Missouri State University-Springfield.

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Lecture 8 - Sensation and Perception Psychophysics study of...

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