PSYC 1101_Sensation_and_Perception_III

PSYC 1101_Sensation_and_Perception_III - Perception *What...

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Perception *What we perceive may be different than what actually exists in the physical world 6/7/10 I. Neural Bases of Perception -Sensory information is relayed from thalamus to specific regions of the cortex -Olfaction (smell) is an exception a. Audition i. Primary Auditory Cortex (A1) 1. Organized tonotopically a. Code pitch of auditory stimuli b. Touch i. Primary somatosensory cortex (S1) 1. Somatosensory homunculus a. Body parts represented in adjacent cortex b. More cortex devoted to more sensitive areas c. Smell and Taste i. Perception of smell and taste are still not well understood d. Vision i. Primary visual cortex (V1) 1. Adjacent areas of retina correspond to adjacent areas of cortex Two parallel processing streams project from V1 (“What” vs. “Where”): ii. Ventral Stream 1. Specialized for object perception and recognition 2. “What” stream iii. Dorsal Stream 1. Specialized for spatial perception 2. “Where” stream II. Object Perception a. Gestalt Principles -Our brains are hard-wired to organize sensory information by certain principles i. Principle of Proximity
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1. Closer figures are more likely to be grouped together as the
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PSYC 1101_Sensation_and_Perception_III - Perception *What...

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