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SENSATION AND PERCEPTION

This article delves into the fascinating world of sensation and perception. Discover how our sensory receptors are stimulated and how we interpret sensory information. Explore concepts like absolute threshold, difference threshold, and sensory adaptation.

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SENSATION AND PERCEPTION

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  1. SENSATION AND PERCEPTION • Sensation: the stimulation of sensory receptors • Perception: the psychological process through which we interpret sensory information • We taste the lemon (sensation) and interpret it as sour (perception)

  2. ABSOLUTE THRESHOLD • The weakest amount of a stimulus that can be sensed • Vision: a candle flame viewed from a distance of about 30 miles on a dark night • Hearing: the ticking of a watch from about 20 feet away in a quiet room

  3. ABSOLUTE THRESHOLD • Smell: about one drop of perfume diffused throughout a small house • Taste: about one teaspoon of sugar dissolved in 2 gallons of water • Touch: the wing of a fly falling on a cheek from a distance of .4 inches

  4. Difference Threshold: minimum amount of difference that can be detected between two stimuli • Signal Detection Theory: method of distinguishing sensory stimuli that takes into account not only strengths but also setting, physical state, and attitude • Piano recital

  5. Sensory Adaptation: process by which we become more sensitive to weak stimuli and less sensitive to unchanging stimuli • Aromas and odors in others’ houses

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