PSYCH 1XX3 Lecture Notes - Olivary Body, Cochlear Nucleus, Extrastriate Cortex

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25 Feb 2014
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Sound waves and auditory systems: auditory systems can translate sound waves from vibrating objects into the psychological experience of audition, sound waves would be produced, sound is the result of our interpretation of wave. Lower frequency fish: higher frequency bats and rodents. The basilar membrane: varies in length across species, shortest amphibians and reptiles. Longest mammals: longer basilar membrane wider range of frequencies, mammals discriminate the widest range of frequencies, most other species cannot discriminate frequencies over 10,000 hz. The stimulus: sound waves: stimulus ears and brain are processing is the sound waves. Brief exposure can cause physical pain and permanent damage. Combination is timbre: bassoon and piccolo both play the same note but each instrument produces unique combination of the fundamental frequency and overtones, sound different even though each instrument is producing the same frequency and amplitude. Instrument used to detect sound waves and convert them into something that the brain can interpret.

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