Sensation and Perception part 1 7-50

Sensation and Perception part 1 7-50 - Definitions...

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Sensation and Perception Definitions Psychophysics Vision Audition Touch
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Sensation and Perception The processes that allow us to take in and interpret  information from the environment Sensation The process of detecting environmental stimuli or  stimuli arising from body. Perception The process of interpreting sensory information Transduction: process of converting physical energy  into neural impulses (action potentials) Translation from stimulus to neural signal
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Psychophysics Study of the relationship between physical events and  the corresponding experience of those events “…physical characteristics of stimuli and our  psychological experience of it.” Absolute Threshold The magnitude of stimulus needed for an observer to detect it  half the time
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Absolute Thresholds Sight:  A single candle in the dark, 30 miles away  (when your eyes are adjusted to the dark) Hearing:  The tick of a watch under quiet conditions  at 20 feet Taste:  One teaspoon of sugar in 2 gallons of water Smell : One drop of perfume diffused in a 6-room  house   Touch:  The wing of a bee falling on your cheek from  a height of 1 centimeter Source:  Adapted from Galanter (1962)
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