Cochlear mechanics applications to the physiology of hearing and to the diagnostic use of otoacoustic emissions.
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V - Biofisica e fisica medica
Aula 32C-2 - Martedì 18 h 09:00 - 13:00
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Otoacoustic emissions (OAEs) are acoustic signals generated in the cochlea as a by-product of the active feedback mechanism responsible for the remarkable sensitivity and frequency resolution of human hearing. OAEs can be measured in the ear canal using conventional miniaturized microphones or pressure-velocity intensimetric probes. Cochlear models, based on the mechanics of an elastic structure (the basilar membrane) coupled to an incompressible fluid, allow one to predict OAE generation, and to relate observable OAE quantities (level and phase) to the physiology and pathology of the peripheral hearing system, providing accurate diagnostic tools for the objective evaluation of the hearing function.