2-8-16 PSYC 110 - 008
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This 1 page Class Notes was uploaded by Savannah Webb on Tuesday February 9, 2016. The Class Notes belongs to PSYC 110 - 008 at University of Tennessee - Knoxville taught by Alexander Malik Khaddouma in Fall 2015. Since its upload, it has received 45 views. For similar materials see General Psychology - in Psychlogy at University of Tennessee - Knoxville.
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Date Created: 02/09/16
Psychology Date: 2/8/16 Alex Khaddouma Sensation and Perception Sensation detection of physical energy by sense organs Perception brains interpretation of sense Sense Receptor Cells Cell specialized for converting external stimuli into neural activity for a specific sensory system Transduction Process of converting an external energy or substance into electrical neural activity Sensation → *Transduction* → Perception Laws of Sensation Organs must be adapted to be able to sense the stimuli for it to be perceived Usually by having specialized sense organs Stimuli intensity must be high enough for an organism to sense it Absolute Threshold Lowest level of stimuli needed for nervous system to detect it half the time Just Noticeable Difference Smallest “detectable” change in the intensity of stimulus 1 vs. 2 page paper 20 vs. 40 page paper 20 vs. 21 page paper Applicable to functions such as screen brightness Perception Bottom Up Processing Process by which a whole is constructed by parts Top Down Conceptually driven processing influenced by beliefs and expectations In real world we use both, this is called parallel processing Illusion Perception that does not match the physical reality of physical objects Usually because of errors in “constancy, color, filtration, or context contamination” Attention Selective Attention Process of selecting one sensory channel and minimizing or ignoring others “cocktail party phenomenon”
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