Lecture6Perception

Lecture6Perception - Sensation and Perception Chapter 4:...

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1 General Psychology January 21, 2010 Chapter 4: Sensation and Perception s Sensation b Raw input s Perception b Organization, Interpretation s Today: b Measuring Sensation and Perception b Attention b Processing b Perceptual Organization b Depth Perception Measuring Sensation and Perception s Psychophysics – link between physical stimuli and subjective sensation s Absolute threshold - smallest stimulus energy needed for the nervous system to detect b point at which a stimulus can be detected 50% of the time b Human error increases as stimuli get weaker Subliminal Perception Subliminal Stimuli: stimuli just below absolute threshold
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2 Measuring Sensation and Perception Just Noticeable Difference (JND): smallest difference between two stimuli that we can detect. • Weber’s Law Signal Detection Theory s Detection of stimuli based on b Intensity of stimulus b Signal to Noise Ratio b Sensitivity of individual b Psychological state s Experience s Expectations s Motivation s
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This note was uploaded on 11/13/2010 for the course PSY PSY 001 taught by Professor Unknown during the Spring '10 term at UC Davis.

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Lecture6Perception - Sensation and Perception Chapter 4:...

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