PSYC 100 Lecture Notes - Lecture 5: Auditory Cortex, Outer Ear, Inner Ear

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Document Summary

The sense we rely on most after sight. Sound is vibration traveling through air: pitch wave frequency (hz, loudness amplitude of the sound waves (db); height of wave, timbre complexity of sound. Parts of the ear: outer ear funnels sound into the ear, middle ear delivers sound wave vibration (3 bones, inner ear. Hair cells excited, send signals to the brain via auditory nerve. Transduction occurs: cochlea fluid filled spiral structure where transduction occurs. Auditory pathways: sound is carried by the auditory nerve to the brainstem and up to the thalamus, routed to primary auditory cortex. Place theory location of hairs matches specific pitches (explains high pitch) Frequency theory frequency of firing neurons corresponds to pitch (explains low pitch) Loss of hearing: conductive deafness malfunction of ear. Disease: nerve deafness damage to auditory nerve. Our body sense: somatosensory touch and pain. Responds to stimuli applied to skin, temperature, injury: proprioception kinesthetic sense, movement, body position.

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