Efferent Modulation of Stimulus Frequency Otoacoustic Emission Fine Structure
نویسندگان
چکیده
منابع مشابه
Efferent Modulation of Stimulus Frequency Otoacoustic Emission Fine Structure
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...
متن کاملProperties of a nonlinear version of the stimulus-frequency otoacoustic emission.
A procedure for extracting the nonlinear component of the stimulus-frequency otoacoustic emission (SFOAE) is described. This nSFOAE measures the amount by which the cochlear response deviates from linear additivity when the input stimulus is doubled in amplitude. When a 4.0-kHz tone was presented alone, the magnitude of the nSFOAE response remained essentially constant throughout the 400-ms dur...
متن کاملThe effect of stimulus-frequency ratio on distortion product otoacoustic emission components.
A detailed measurement of distortion product otoacoustic emission (DPOAE) fine structure was used to extract estimates of the two major components believed to contribute to the overall DPOAE level in the ear canal. A fixed-ratio paradigm was used to record DPOAE fine structure from three normal-hearing ears over a range of 400 Hz for 12 different stimulus-frequency ratios between 1.053 and 1.36...
متن کاملSignificance 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...
متن کاملMeasurement of Amplitude and Delay of Stimulus Frequency Otoacoustic Emissions.
Although stimulus frequency otoacoustic emissions (SFOAEs) have been used as a non-invasive measure of cochlear mechanics, clinical and experimental application of SFOAEs has been limited by difficulties in accurately deriving quantitative information from sound pressure measured in the ear canal. In this study, a novel signal processing method for multicomponent analysis (MCA) was used to meas...
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ژورنال
عنوان ژورنال: Frontiers in Systems Neuroscience
سال: 2015
ISSN: 1662-5137
DOI: 10.3389/fnsys.2015.00168