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Unformatted text preview: cochlear nerve impulses -> to brain IV. Anatomical Pathway to the Brain cochlear nerve (vestibulocochlear VIII)-> spiral ganglion --> cochlear nuclei (medulla) --> superior olivary nucleus --> lateral lemniscal tract --> inferior colliculus --> medial geniculate body of thalamus --> auditory cortex (superior temporal lobe) V. Processing of Auditory Information A. Perceiving Pitch (Frequency) - location of vibration on the basilar membrane B. Perceiving Differences in Loudness (Intensity) - amplitude increases, more hair cells of the basilar membrane (with same pitch) are activated Physiology of Hearing and Equilibrium C. localizing Source of Sound 1. superior olivary nucleus - first point where sound from both ears come together a. relative intensity - the amplitude of sound waves hitting the different ears b. relative timing - the difference in timing in which a sound reaches both ears...
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