PSY 201 Sensation and Perception

PSY 201 Sensation and Perception - Sensation and Perception...

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Click to edit Master subtitle style Sensation and Perception
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Sensation n Detection of physical energy and convergence to neural signals n Input from the environment ¨ Vision ¨ Hearing ¨ Smell ¨ Taste ¨ Touch ¨ Vestibular
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Perception n Organization and interpretation of sensations
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Sensation and Perception n Bottom-up processing ¨ Analysis that begins with sense receptors and works up to the brain’s integration of the information n Top-down processing ¨ Information processing guided by higher level mental processes
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Interplay between sensation and perception
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Top-down processing n “It deosn’t mttaer in what oredr the ltteers in a word are, the olny iprmoetnt tihng is that the frist and lsat ltteer be at the rghit pclae. The rset can be a total mses and you can still raed it wouthit a porbelm. This is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the word as a wlohe.”
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Thresholds n Absolute thresholds ¨ Minimum stimulus needed to detect a stimulus 50 percent of the time n Difference thresholds ¨ Minimum difference detected between any two stimuli 50 percent of the time
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Signal detection theory n Detection of a “signal” ¨ Affected by experience, expectations, motivation, and alertness
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Selective attention n http://viscog.beckman.uiuc.edu/djs_lab/demos.htm n http://viscog.beckman.uiuc.edu/grafs/demos/12.h n http://viscog.beckman.uiuc.edu/grafs/demos/1.htm n http://viscog.beckman.uiuc.edu/grafs/demos/15.h
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n Light ¨ Wavelength
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This note was uploaded on 06/16/2008 for the course PSY 201 taught by Professor Skaggs during the Fall '07 term at Oregon State.

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PSY 201 Sensation and Perception - Sensation and Perception...

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