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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
763
Phoneme discrimination and localization performance in children with cochlear implants and contralateral auditory
Erva Degirmenci Uzun1, Merve Ozbal Batuk2, Gonca Sennaroglu2
1Department of Audiology, Faculty of Health Science, Izmir Bakircay University, Izmir, Turkey. ervadegirmencii@gmail.com.
Summary
Bilateral cochlear implant (CI) and auditory brainstem implant (ABI) use significantly improves phoneme discrimination compared to ABI alone in children with inner ear malformations. Bilateral stimulation is recommended for optimal auditory outcomes.
Area of Science:
- Audiology
- Neuroscience
- Biomedical Engineering
Background:
- Severe inner ear malformations and cochlear nerve deficiencies pose significant challenges to auditory rehabilitation.
- Cochlear implants (CI) and auditory brainstem implants (ABI) offer alternative solutions for hearing restoration.
- Bilateral auditory stimulation aims to enhance sound processing and spatial hearing.
Purpose of the Study:
- To compare unilateral and bilateral phoneme discrimination (PD) and azimuth localization in children with severe inner ear malformations using a CI and contralateral ABI.
- To evaluate the efficacy of CI-only, ABI-only, and bilateral CI/ABI stimulation.
- To assess the relationship between auditory performance and Hearing-Related Quality of Life (HRQoL).
Main Methods:
- 17 children (7-18 years) with CI and contralateral ABI participated.
- Phoneme discrimination and localization tests were conducted under three conditions: CI only, ABI only, and bilateral.
- A self-report Hearing-Related Quality of Life (HRQoL) scale was administered.
Main Results:
- Phoneme discrimination scores were significantly higher in the bilateral condition versus ABI-only (p=0.003).
- No significant differences in PD were found between CI-only and bilateral conditions.
- Localization performance showed no significant differences across the three conditions; HRQoL predicted bilateral PD, and ABI localization predicted bilateral localization.
Conclusions:
- Bilateral stimulation with CI and ABI offers superior phoneme discrimination compared to ABI alone.
- Continued use of contralateral CI is recommended with ABI, even with severe inner ear malformations.
- Bilateral CI/ABI use can achieve comparable PD and localization performance, enhancing HRQoL.
Keywords:
Auditory brainstem implantsCochlear implantsQuality of lifeSound localizationSpeech perceptionMore Related Videos
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