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Ch. 3 Perception - Sensation vs Perception Sensory...

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Sensation vs. Perception Sensory Adaptation & the Afterimage The ABCs of Perception The Constancies The Gestalt Principles Depth Perception Perceptual Illusions Factors that affect Perception
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Sensation = activation of receptors in sensory organs (energy in the environment transformed into neural signals). Visual receptors are on the retina of the eye (see Fig. 3.2) Perception = interpreting and organizing those signals into something meaningful. S ensation vs. Perception
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Sensory adaptation occurs when sensory receptors become less responsive to an unchanging stimulus. In color vision, this creates the “Afterimage” illusion. Based on the opponent-process theory of color vision (see Fig. 3.6, 92) S ensory Adaptation & the Afterimage
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The “Shifting gears” illusion is also based on the Afterimage. Complementary colors create apparent movement in our peripheral vision as our eyes shift across the page.
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T he ABCs of Perception 1. The Constancies: Even though visual sensations are
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