Modeling DPOAE Input/Output Function Compression: Comparisons with Hearing Thresholds.
Background: Basilar membrane input/output (I/O) functions in mammalian animal models are characterized by linear and compressed segments when measured near the location corresponding to the characteristic frequency. A method of studying basilar membrane compression indirectly in humans involves meas...
| Publicado en: | Journal of the American Academy of Audiology Vol. 25; no. 8; pp. 746 - 760 |
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| Autor principal: | |
| Formato: | equations & formulas research tables/charts Journal Article |
| Publicado: |
Thieme Medical Publishing Inc.
Sep2014
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=107805434&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 107805434 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10500545 9OC jtl: Journal of the American Academy of Audiology issn: 10500545 maglogo: Y pubinfo: dt: Sep2014 vid: 25 iid: 8 pid: 2811 pub: Thieme Medical Publishing Inc. place: New York, New York artinfo: ui: 107805434 99383293 10.3766/jaaa.25.8.5 NLM25380121 107805434 ppf: 746 ppct: 14 formats: fmt: @attributes: type: P tig: atl: Modeling DPOAE Input/Output Function Compression: Comparisons with Hearing Thresholds. aug: au: Bhagat, Shaum P. affil: Hearing Science Laboratory, School of Communication Sciences and Disorders, University of Memphis, Memphis, TN sug: subj: Otoacoustic Emissions, Evoked Hearing Tests Auditory Threshold Cochlea Physiology Human Prospective Studies Pearson's Correlation Coefficient Adult Male Female Descriptive Statistics Audiometers Audiometry, Pure-Tone Acoustic Impedance Tests Adult: 19-44 years Male Female ab: Background: Basilar membrane input/output (I/O) functions in mammalian animal models are characterized by linear and compressed segments when measured near the location corresponding to the characteristic frequency. A method of studying basilar membrane compression indirectly in humans involves measuring distortion-product otoacoustic emission (DPOAE) I/O functions. Previous research has linked compression estimates from behavioral growth-of-masking functions to hearing thresholds. Purpose: The aim of this study was to compare compression estimates from DPOAE I/O functions and hearing thresholds at 1 and 2 kHz. Research Design: A prospective correlational research design was performed. The relationship between DPOAE I/O function compression estimates and hearing thresholds was evaluated with Pearson product-moment correlations. Study Sample: Normal-hearing adults (n = 16) aged 22-42 yr were recruited. Data Collection and Analysis: DPOAE I/O functions (L2 = 45-70 dB SPL) and two-interval forced-choice hearing thresholds were measured in normal-hearing adults. A three-segment linear regression model applied to DPOAE I/O functions supplied estimates of compression thresholds, defined as breakpoints between linear and compressed segments and the slopes of the compressed segments. Pearson product-moment correlations between DPOAE compression estimates and hearing thresholds were evaluated. Results: A high correlation between DPOAE compression thresholds and hearing thresholds was observed at 2 kHz, but not at 1 kHz. Compression slopes also correlated highly with hearing thresholds only at 2 kHz. Conclusions: The derivation of cochlear compression estimates from DPOAE I/O functions provides a means to characterize basilar membrane mechanics in humans and elucidates the role of compression in tone detection in the 1-2 kHz frequency range. pubtype: Academic Journal doctype: equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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