psyc_sept61

psyc_sept61 - September 6 2007 Sensation and Perception •...

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September 6, 2007 Sensation and Perception Sensation: the conversion of the stimulus to neural impulses; includes sight, hearing, touch, taste, and smell How do we take in information about the world? Perception: the selection, organization and interpretation of stimuli How do we make sense of the sensory information we take in? Perceptual constancy: we experience perceptual stability even though the sensed stimulus changes For example: size constancy- hand 6” vs. 18” from your eyes. .. it looks different in size, but your hand doesn't get larger or smaller in reality! Also, shape constancy- a football looks very different from different angles/perspectives but it maintains its shape consistantly. Experiencing a Stimulus Stimulus: anything that activates a sensory system 3-Step Process: 1. Stimulus energy (for example, a light photon) impacts sense receptors 2. Sense organ (in this case, the eye) interprets the stimulus energy into an electrical code 3. This code is sent to the cerebral cortex, which results in a
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psyc_sept61 - September 6 2007 Sensation and Perception •...

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