Unit 4

Sensation and Perception 6-8%

Essential Task 4-1: Discuss basic principles of sensation/bottom up processing with specific attention to sensory transduction, absolute threshold, difference threshold (Weber's Law), signal detection, and sensory adaptation.

Essential Task 4-2:Describe the sensory process of vision including the specific nature of energy transduction (rods and cones and the trichromatic theory of color vision), relevant anatomical structures (cornea, pupil, iris, lens, retina, optic nerve, blind spot and fovea) and specialized pathways in the brain (opponent process theory of color vision and the occipital lobe).

Essential Task 4-3: Describe the other sensory processes (e.g., hearing, touch, taste, smell, vestibular, kinesthesis,pain), including the specific nature of energy transduction (Frequency Theory, Place Theory ,Volley Principle, Gate Control Theory) relevant anatomical structures, and specialized pathways in the brain for each of the senses.

Essential Task 4-4: Explain common sensory disorders (e.g., visual and hearing impairments).

Essential Task 4-5: Describe general principles of perception/ top down processing (organizing and integrating sensation) that promote stable awareness of the external world with specific attention to the Gestalt principles of figure/ground, closure, proximity, connectedness, similarity and the mono and binocular cues for depth perception).

Essential Task 4-6: Discuss how experience, context and culture can influence perceptual processes with specific attention to perceptual set, illusions, change blindness, and selective attention.

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