Significance of a notch in the otoacoustic emission stimulus spectrum

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Significance of a notch in the otoacoustic emission stimulus spectrum.

OBJECTIVE To explain a clinical observation: a notch in the stimulus spectrum during transient evoked otoacoustic emission measurement in ears with secretory otitis media. METHODS The effects of tympanic under-pressure were investigated using a pressure chamber. A model of the ear canal was also studied. RESULTS Tympanic membrane reflectance increased as a consequence of increased stiffness...

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Otoacoustic emissions, sounds generated in the inner ear, have become a convenient non-invasive tool to examine the efferent modulation of cochlear mechanics. Activation of the medial olivocochlear (MOC) efferents has been shown to alter the magnitude of these emissions. When the effects of efferent activation on the detailed spectral structures of these emissions have been examined, a shift of...

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ژورنال

عنوان ژورنال: The Journal of Laryngology & Otology

سال: 2012

ISSN: 0022-2151,1748-5460

DOI: 10.1017/s0022215112001533