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Estimation of Round-Trip Outer-Middle Ear Gain Using DPOAEs
Maryam Naghibolhosseini1,2, Glenis R Long3
1Communicative Sciences and Disorders, Michigan State University, 1026 Red Cedar Road, East Lansing, MI, 48824, USA. naghib@msu.edu.
Journal of the Association for Research in Otolaryngology : JARO
|November 1, 2016
Summary
This study presents a novel, noninvasive method to measure outer-middle ear pressure gain using distortion product otoacoustic emissions (DPOAEs). This technique enhances cochlear health assessments by quantifying middle ear effects on hearing.
Area of Science:
- Audiology
- Otoacoustic Emissions
- Hearing Science
Background:
- Otoacoustic emissions (OAEs) assess cochlear health but are influenced by outer and middle ear function.
- Quantifying outer and middle ear effects is crucial for accurate cochlear health evaluation using OAEs.
Purpose of the Study:
- To introduce a noninvasive method for estimating round-trip outer-middle ear pressure gain.
- To improve the assessment of cochlear health by accounting for middle ear transmission characteristics.
Main Methods:
- Distortion product otoacoustic emissions (DPOAEs) were recorded under two-tone and three-tone stimulation conditions.
- The method analyzed the impact of forward and reverse outer-middle ear transmission on DPOAEs.
- Round-trip outer-middle ear pressure gain was estimated based on these DPOAE measurements.
Main Results:
- The study successfully estimated round-trip outer-middle ear pressure gain.
- Estimated gain values ranged from -39 to -17 dB across frequencies from 1 to 3.3 kHz.
Conclusions:
- The developed noninvasive approach provides valuable insights into outer-middle ear function.
- This method can refine the interpretation of OAEs for more precise cochlear health diagnostics.
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