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Auditory Localization Skills of Adult Cochlear Implant Users: Self-Report Assessment Results
Merve İkiz Bozsoy1, Betül Çiçek Çınar2
1Department of Speech and Language Therapy, Anadolu University, Eskisehir, Turkey.
The Annals of Otology, Rhinology, and Laryngology
|February 14, 2026
Summary
Individuals with normal hearing performed better in auditory localization tasks than cochlear implant (CI) users. Bimodal hearing did not significantly improve localization compared to unilateral CI use, indicating a need for better CI strategies.
Area of Science:
- Audiology
- Neuroscience
- Rehabilitation Science
Background:
- Auditory localization is crucial for communication and survival.
- Hearing loss, especially unilateral, impairs binaural hearing and sound localization.
- Cochlear implants (CIs) aim to restore hearing but their impact on localization varies.
Purpose of the Study:
- To compare auditory localization abilities in normal hearing (NH) individuals, unilateral cochlear implant (UnCI) users, and bimodal cochlear implant (BimCI) users.
- To investigate the effectiveness of different CI configurations for sound localization.
Main Methods:
- A total of 119 participants were included: 50 NH, 46 UnCI, and 23 BimCI.
- The Auditory Localization Scale, comprising 24 items across 5 subdimensions, was administered.
- Higher scores on the scale indicate greater difficulty with hearing and sound localization.
Main Results:
- Significant differences in auditory localization were found across all scale subsections and total scores among the three groups (P < .001).
- Normal hearing individuals scored significantly better than both UnCI and BimCI groups across all measures (P < .017).
- No significant difference in localization scores was observed between UnCI and BimCI users (P > .017).
Conclusions:
- Bimodal hearing, while providing binaural input, may not sufficiently restore auditory localization abilities in CI users.
- Further research and technological advancements are needed to improve subjective benefits and hearing outcomes for adult CI users.
- Current CI strategies may require enhancement to address the complexities of sound localization.
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