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The Relationship Between Distortion Product Otoacoustic Emissions and Extended High-Frequency Audiometry in Tinnitus Patients
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In: ETSU Faculty Works (2012)
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| 22 |
Recent Advances in Cochlear Physiology
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In: ETSU Faculty Works (2012)
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| 23 |
Auditory Temporal Processing of Speech and Non-speech Contrasts in Specialized Listeners
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In: ETSU Faculty Works (2012)
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| 24 |
Active Cochlear Processes and their Influence on the Generation of Otocoustic Emissions
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In: ETSU Faculty Works (2011)
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| 25 |
DPOAEs in Normally Hearing Patients with Either Unilateral or Bilateral Tinnitus
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In: ETSU Faculty Works (2011)
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| 26 |
Distortion Product Otoacoustic Emissions in Normal-hearing Patients with Bilateral Tinnitus and in Non-tinnitus Controls
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In: ETSU Faculty Works (2011)
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| 27 |
The Role of Temporal Fine Structure Processing in “Listening in the Dips” of Noise
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In: ETSU Faculty Works (2011)
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| 28 |
Temporal Processing in Patients with Tinnitus
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In: ETSU Faculty Works (2011)
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| 29 |
Distortion-Product Otoacoustic Emissions in Normal-hearing Patients with Either Unilateral or Bilateral Tinnitus
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In: ETSU Faculty Works (2011)
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| 30 |
The Effect of Tinnitus on Gap Detection
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In: ETSU Faculty Works (2011)
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| 31 |
Influence of Low- and Ultra High-frequency Hearing Thresholds on Distortion Product Otoacoustic Emissions (DPOAEs): An Attempt to Separate DPOAE Generation Mechanisms
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In: ETSU Faculty Works (2010)
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| 32 |
Binaural Performance in Normal-hearing Young Adults Influenced by Short-term Induced Unilateral Conductive and Sensory Changes
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In: ETSU Faculty Works (2010)
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| 33 |
Extended High-frequency Audiometry and DPOAEs in Patients with Unilateral Tinnitus
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In: ETSU Faculty Works (2010)
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| 34 |
Distortion Product Otoacoustic Emissions in Normal-hearing Patients with Unilateral Tinnitus
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In: ETSU Faculty Works (2010)
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| 35 |
Matching Pursuit Algorithm Applied to the Evaluation of Click-evoked Otoacoustic Emissions Recorded with Linear and Nonlinear Protocols
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In: ETSU Faculty Works (2009)
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| 36 |
Influence of Unilateral Tinnitus on Distortion Product Otoacoustic Emission Levels
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In: ETSU Faculty Works (2009)
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| 37 |
Extended High-frequency Audiometry and Distortion Product Otoacoustic Emissions in Normal-hearing Patients with Unilateral Tinnitus
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In: ETSU Faculty Works (2009)
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Abstract:
Some tinnitus patients have normal hearing on the conventional audiogram. It has been suggested that the presence of a limited area of damaged outer hair cells (OHCs) with intact inner hair cells, which is not detected on the audiogram, results in unbalanced neural activity between Type I and Type II fibers leading to tinnitus. Distortion product otoacoustic emissions (DPOAEs) provided ambiguous data of OHC function in normal-hearing tinnitus patients when compared to non-tinnitus controls. It is known that hearing loss in the extended high frequency (EHF) region may decrease DPOAEs evoked at lower frequencies. Results of EHF audiometry in tinnitus patients are limited. The aim of the study was to evaluate DPOAEs and EHF thresholds in normal-hearing patients reporting unilateral tinnitus in left ear. Thus, each subject acted as their own control. Data were obtained for 25 subjects with bilateral hearing thresholds 3dB. Median audiometric data showed that thresholds in the left ears were significantly higher than those in the right ears at all four EHFs. Mean DPOAE levels of the left ears were lower than those of the right ears in the frequency range above 1 kHz. Additionally, a paired-comparison test of DPOAE levels of each patient’s right and left ear revealed significant differences at 6, and 8 kHz. The results indicate that: 1. OHC impairment in the most basal region reduces contribution to more apically generated DPOAEs; 2. OHC impairment in a limited area, which may be revealed by DPOAEs but not by conventional audiometry, can contribute to tinnitus generation; and 3. patients with unilateral tinnitus and normal hearing on the conventional audiogram are likely to demonstrate hearing loss in the EHF region.
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Keyword:
Audiology and Speech-Language Pathology; distortion product; DPOAE; high-frequency audiometry; normal hearing; otoacoustic emissions; Speech Pathology and Audiology; unilateral tinnitus
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URL: https://dc.etsu.edu/etsu-works/2201
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| 38 |
Audiology Makes Rapid Advances in Poland
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In: ETSU Faculty Works (2008)
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| 39 |
Ultra-high Frequency (UHF) Hearing and DPOAE Levels at Lower Frequencies
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In: ETSU Faculty Works (2008)
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| 40 |
Otoacoustic Emissions Evoked by Two-Tone Bursts Using Linear and Non-Linear Protocol
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In: ETSU Faculty Works (2008)
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