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Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
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[Auditory and corporal laterality, logoaudiometry, and monaural hearing aid gain].
Mariela Benavides1, Yolanda R Peñaloza-López, Sabino de la Sancha-Jiménez
1Investigación en Medicina Familiar. Facultad de Medicina. Universidad Nacional Autónoma de México. México.
Acta Otorrinolaringologica Espanola
|December 18, 2007
Summary
The dichotic auditory laterality test best predicts which ear benefits most from a monaural hearing aid in symmetric bilateral hearing loss. This test helps determine optimal hearing aid fitting.
Area of Science:
- Audiology
- Hearing Science
- Clinical Otolaryngology
Context:
- Symmetric bilateral hearing loss presents challenges for monaural hearing aid fitting.
- Determining the optimal ear for a single hearing aid is crucial for patient benefit.
- Existing clinical tests may not perfectly correlate with hearing aid effectiveness.
Purpose:
- To identify the auditory or clinical test with the highest correlation to the ear receiving a monaural hearing aid.
- To evaluate the utility of the dichotic digits test for laterality in hearing aid selection.
- To assess the correlation between auditory laterality and hearing aid gain.
Summary:
- A study involving 37 adult patients with symmetric bilateral hearing loss examined correlations between speech discrimination, laterality tests, and hearing aid performance.
- The highest correlation (0.940) was found between auditory laterality, specifically the dichotic digits test, and hearing aid gain.
- Results indicate the dichotic test is effective in identifying the better ear for monaural hearing aid application.
Impact:
- The dichotic auditory laterality test is a valuable tool for selecting the optimal ear for monaural hearing aid fitting.
- This research suggests incorporating the dichotic test into the audiological assessment process before hearing aid prescription.
- Improved hearing aid fitting can lead to enhanced speech understanding and quality of life for individuals with hearing loss.
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