Ch 5 - Sensation and Perception Sensation -Sensation -the...

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Sensation and Perception Sensation -Sensation -the process by which our sensory receptors and nervous systems receive and represent stimulus energy (bottom up processing) -Perception - a process of organizing and interpreting a sensory information, enabling us to recognize meaningful objects and events (Top down processing) -Bottom up processing - analysis that begins with the sense receptors and works up to the brain's integration of sensory information -Top Down Processing - information processing guided by higher-level mental processes - as when we construct perceptions drawing on our experiences and expectations Sensation -- Basic principles -Psychophysics study of the relationship between physical characteristics of stimuli and our psychological experience of them -Absolute Threshold minimum stimulation needed to detect a particular stimulus 50% of the time Sensation -- Thresholds -Subliminal below one's absolute threshold for conscious awareness -When stimuli are detectable less tan 50% of the time (below one's absolute threshold)
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Ch 5 - Sensation and Perception Sensation -Sensation -the...

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