PSYC 271 Lecture Notes - Lecture 14: Auditory Cortex, Cochlear Implant, Sensory Cortex
14 Dec 2015
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3 diff types of cortical sensory areas: o o o o o o o o (1) primary input mainly from thalamic relay nuclei; ex. V1 input from the lgn (2) secondary input mainly from primary & secondary cortex w/in the sensory sys (3) association input from multiple sensory sys; typically from secondary sensory cortex. Hierarchical organization: more specific & complex at higher levels. Functional segregation: functionally distinct areas w/in levels responsible for diff kinds of analysis. Parallel processing: simultaneous analysis of signals along multiple pathways. Stimulus in audition is a sound wave o. Sound wave pressure waves generated by vibrating air molecules; waves of diff pressure radiate outward. Sound occurs in both physical & perceptual dimensions below) Frequency & pitch describe how natural sounds are made of complex patterns of vibration. Pitch is related to the sound"s fundamental frequency o o o.
