Relationship between Distortion Product Otoacoustic Emissions and Pure Tone Thresholds in Normal and Hearing-impaired Ears.
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چکیده
منابع مشابه
Distortion product otoacoustic emission input/output functions in normal-hearing and hearing-impaired human ears.
DPOAE input/output (I/O) functions were measured at 7f2 frequencies (1 to 8 kHz; f2/f1 = 1.22) over a range of levels (-5 to 95 dB SPL) in normal-hearing and hearing-impaired human ears. L1-L2 was level dependent in order to produce the largest 2f1-f2 responses in normal ears. System distortion was determined by collecting DP data in six different acoustic cavities. These data were used to deri...
متن کاملDistortion product otoacoustic emission suppression tuning curves in normal-hearing and hearing-impaired human ears.
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 کاملOtoacoustic emissions from normal-hearing and hearing-impaired subjects: distortion product responses.
Distortion product otoacoustic emissions (DPOAE) were measured in normal-hearing and hearing-impaired human subjects. Analyses based on decision theory were used to evaluate DPOAE test performance. Specifically, relative operating characteristic (ROC) curves were constructed and the areas under these curves were used to estimate the extent to which normal and impaired ears could be correctly id...
متن کاملInput-output functions of the nonlinear-distortion component of distortion-product otoacoustic emissions in normal and hearing-impaired human earsa)
Distortion-product otoacoustic emissions (DPOAEs) arise in the cochlea in response to two tones with frequencies f1 and f2 and mainly consist of two components, a nonlinear-distortion and a coherent-reflection component. Wave interference between these components limits the accuracy of DPOAEs when evaluating the function of the cochlea with conventional continuous stimulus tones. Here, DPOAE co...
متن کاملDistortion product otoacoustic emissions to single and simultaneous tone pairs.
Distortion product otoacoustic emissions (DPOAEs) evoked by single tone pairs and three simultaneous tone pairs were recorded in 60 normal-hearing adult ears. The purpose was to replicate a previous study using the commercially available probe assembly of the Grason Stadler GSI 60 and including ear of presentation in the statistical analysis along with frequency and condition. DPOAE levels were...
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ژورنال
عنوان ژورنال: Nippon Jibiinkoka Gakkai Kaiho
سال: 1997
ISSN: 0030-6622,1883-0854
DOI: 10.3950/jibiinkoka.100.436