Distortion Product Otoacoustic Emission Suppression in Subjects with Auditory Neuropathy
نویسندگان
چکیده
منابع مشابه
Fine Structure in Distortion Product Otoacoustic Emissions and Auditory Perception
4 The influence of the second source of distortion product otoacoustic emissions (DPOAE) on DPOAE input/output functions 41 INTRODUCTION 42 I. EXPERIMENTAL METHODS 45 A. Subjects 45 B. Instrumentation and signal processing 45 C. Calibration 46 D. DPOAE measurements 46 II. DATA ANALYSIS 47 A. Separation of DPOAE components via time windowing 47 B. DPOAE threshold according to Boege and Janssen 5...
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Distortion product otoacoustic emission (DPOAE) suppression measurements were made in 20 subjects with normal hearing and 21 subjects with mild-to-moderate hearing loss. The probe consisted of two primary tones (f2, f1), with f2 held constant at 4 kHz and f2/f1 = 1.22. Primary levels (L1, L2) were set according to the equation L1 = 0.4 L2 + 39 dB [Kummer et al., J. Acoust. Soc. Am. 103, 3431-34...
متن کاملDistortion product otoacoustic emission suppression tuning curves in human adults and neonates.
Distortion product otoacoustic emission (DPOAE) iso-suppression tuning curves (STC) were generated in 15 normal-hearing adults and 16 healthy term-born neonates for three f2 frequencies. The 2f1-f2 DPOAE was elicited using f2/f1 = 1.2, LI = 1.2, LI = 65 and L2 = 50 dB SPL. A suppressor tone was presented at frequencies ranging from 1 octave below to 1/4 octave above f2 and varied in level until...
متن کاملDistortion product otoacoustic emissions in normally hearing subjects.
The finding of active function by the outer hair cells for sound processing prior to neural transduction in the inner hair cells represents the basic mechanism for the generation of Otoacoustic Emissions in the cochlea. Among them the so-called Distortion Product Otoacoustic Emissions represent a tool for an in depth knowledge of the Organ of Corti micromechanics, more advantageous than others,...
متن کاملDistortion-product otoacoustic emission growth curves in neonates.
BACKGROUND The recording of otoacoustic emissions (OAE) enabled us to prove that the cochlea is able not only to receive sounds but also to produce acoustic energy. Through the use of distortion-product otoacoustic emission measurements, the growth of the response was seen according to the intensity of the sound stimulus presented (growth curve). OBJECTIVE to determine the thresholds for the ...
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ژورنال
عنوان ژورنال: Ear and Hearing
سال: 2000
ISSN: 0196-0202
DOI: 10.1097/00003446-200012000-00002