NROC64H3 Chapter Notes - Chapter 11: Oval Window, Auditory System, Vestibular Nuclei

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Chapter 11 the auditory and vestibular systems. Audition (sense of hearing) and vestibular system (sense of balance) have very different functions but similar structure and mechanism; audition is an important communication and balance is for our personal, internalized process. Sounds in our environment are translated into meaningful neural signals. Movements of our head are translated into a sense of where we are. Sounds are audible variations in air pressure e. g. object moving towards a patch of air, increases the density of molecules. Sound waves all propagate at the same speed; they differ in frequency and intensity (amplitude) Intensity difference in pressure between compressed and rarefied patches of air; determines loudness. The structure of the auditory system y pinna helps collect sounds from a wide area. shape makes us more sensitive to sounds coming from ahead than behind. Inner ear apparatus medial to the oval window.

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