Sensation and Perception PART 2

Sensation and Perception PART 2 - Basic Sensation...

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Basic Sensation Principles 1. Threshold : the minimum amount of information required for sensation a. Detection threshold a. Discrimination threshold a. Classical approach: absolute, objective threshold a. Signal detection approach: threshold can be affected by motivation, background noise 1. Adaptation : a decline in sensitivity that occurs when stimulation is prolonged and unchanging -As long as nothing is changing, your senses will lose sensitivity as they become bored Some examples: a. Olfactory adaptation - in a smelly room, you will progressively notice the stink less and less b. Visual afterimages - adaptation occurs most slowly - eyes have an involuntary muscle movement to change visual scene - hard to experience unless you try to focus hard on 1 thing c. Taste aftereffects - 1. Interaction : sensation/perception in one sensory system is affected by information from another sensory system - our experience in one sense is not completely affected by the one sense alone. Sense of taste can be affected by what we see i.e. the green ketchup, the purple ketchup
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This note was uploaded on 01/22/2010 for the course PSYC 101 taught by Professor Loeb during the Fall '08 term at UNC.

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Sensation and Perception PART 2 - Basic Sensation...

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