Investigating OAEs and audiogram fine structure in the extended high-frequency region
Investigating OAEs and audiogram fine structure in the extended high-frequency region
Introduction
Several studies suggest that both noise induced hearing loss (NIHL) and age related hearing loss (ARHL) lead to more rapid hearing threshold level (HTL) shifts in the extended-high frequency (EHF) 10-18 kHz region than in the conventional frequency region (0.25 – 8 kHz). It has therefore been hypothesised that the EHF region can provide early signs of hearing damage, before the conventional frequencies. Previous studies at conventional audiometric frequencies (<8 kHz) have found that the presence of audiogram fine structure (AFS) is associated with normal HTL and normal transient evoked otoacoustic emissions (TEOAEs). The main aim of the present study is to investigate whether the relationships between HTL, otoacoustic emissions (OAEs) (TEOAEs and distortion product otoacoustic emissions (DPOAEs)), and audiogram fine-structure obtained in the EHF region are similar to those reported at conventional frequencies.Research Questions1. Do we see a reduction in the depth of the EHF audiogram fine structure with increasing EHF-HTLs and with a reduction in amplitude of EHF-OAEs?
2. Do we see an average spectral periodicity in the EHF audiogram fine structure that is consistent with predictions from cochlear mechanical theory?
Method
Hearing will be assessed in normal otological adults with measurable EHF-HTL. Hearing sensitivity will be assessed using EHF audiometry (10-18 kHz) and EHF-AFS (8-16 kHz), while cochlear function will be evaluated with EHF-TEOAEs, EHF-DPOAEs and spontaneous OAEs.ResultsWithin subject design will be conducted to assess the correlation between EHF-measurements. Results will be present the correlation between the EHF-HTL, TEOAEs, DPOAEs, and AFS at EHF hearinglevel. The average spectral periodicity of the EHF-AFS will also be presented.
otoacoustic emmissions
Alenzi, Hind, Maher
42f3397c-2915-4a37-a83c-e4053956e147
Lineton, Ben
1ace4e96-34da-4fc4-bc17-a1d82b2ba0e2
7 September 2019
Alenzi, Hind, Maher
42f3397c-2915-4a37-a83c-e4053956e147
Lineton, Ben
1ace4e96-34da-4fc4-bc17-a1d82b2ba0e2
Alenzi, Hind, Maher and Lineton, Ben
(2019)
Investigating OAEs and audiogram fine structure in the extended high-frequency region.
56th Workshop on Inner Ear Biology, University of Padua, Padua, Italy.
07 - 10 Sep 2019.
Record type:
Conference or Workshop Item
(Poster)
Abstract
Introduction
Several studies suggest that both noise induced hearing loss (NIHL) and age related hearing loss (ARHL) lead to more rapid hearing threshold level (HTL) shifts in the extended-high frequency (EHF) 10-18 kHz region than in the conventional frequency region (0.25 – 8 kHz). It has therefore been hypothesised that the EHF region can provide early signs of hearing damage, before the conventional frequencies. Previous studies at conventional audiometric frequencies (<8 kHz) have found that the presence of audiogram fine structure (AFS) is associated with normal HTL and normal transient evoked otoacoustic emissions (TEOAEs). The main aim of the present study is to investigate whether the relationships between HTL, otoacoustic emissions (OAEs) (TEOAEs and distortion product otoacoustic emissions (DPOAEs)), and audiogram fine-structure obtained in the EHF region are similar to those reported at conventional frequencies.Research Questions1. Do we see a reduction in the depth of the EHF audiogram fine structure with increasing EHF-HTLs and with a reduction in amplitude of EHF-OAEs?
2. Do we see an average spectral periodicity in the EHF audiogram fine structure that is consistent with predictions from cochlear mechanical theory?
Method
Hearing will be assessed in normal otological adults with measurable EHF-HTL. Hearing sensitivity will be assessed using EHF audiometry (10-18 kHz) and EHF-AFS (8-16 kHz), while cochlear function will be evaluated with EHF-TEOAEs, EHF-DPOAEs and spontaneous OAEs.ResultsWithin subject design will be conducted to assess the correlation between EHF-measurements. Results will be present the correlation between the EHF-HTL, TEOAEs, DPOAEs, and AFS at EHF hearinglevel. The average spectral periodicity of the EHF-AFS will also be presented.
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More information
Published date: 7 September 2019
Venue - Dates:
56th Workshop on Inner Ear Biology, University of Padua, Padua, Italy, 2019-09-07 - 2019-09-10
Keywords:
otoacoustic emmissions
Identifiers
Local EPrints ID: 436644
URI: http://eprints.soton.ac.uk/id/eprint/436644
PURE UUID: 0c25c531-4a8e-42bd-9da0-bc860a6e0efb
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Date deposited: 19 Dec 2019 17:30
Last modified: 12 Sep 2022 01:38
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Contributors
Author:
Hind, Maher Alenzi
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