Related Experiment Video
Updated: Jan 24, 2026
06:04
Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
777
Comparison Between Simulated and Actual Unilateral Hearing in Sequentially Implanted Cochlear Implant Users, a Cohort
Alice van Zon1, Yvette E Smulders1, Veronique J C Kraaijenga1
1Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Center Utrecht, Utrecht, Netherlands.
Frontiers in Surgery
|May 29, 2019
Summary
Simulating unilateral hearing by deactivating one cochlear implant is a reliable method. This approach accurately reflects real-world unilateral hearing outcomes in bilateral cochlear implant users.
Area of Science:
- Audiology
- Neuroscience
- Otorhinolaryngology
Background:
- Bilateral cochlear implantation (BCI) is often compared to unilateral cochlear implantation (UCI).
- Simulating UCI in BCI users by deactivating one implant is a common research method.
- The accuracy of this simulation method compared to real UCI has not been well-established.
Purpose of the Study:
- To evaluate the accuracy of simulated unilateral hearing (deactivating one cochlear implant) versus real unilateral hearing (one cochlear implant and a non-implanted ear).
- To determine if deactivating one implant in BCI users yields comparable outcomes to using a single cochlear implant.
Main Methods:
- Utilized data from 19 postlingually deafened adults in a sequential BCI group from a multicenter randomized controlled trial.
- Compared outcomes of real unilateral hearing (1- and 2-year follow-up) with simulated unilateral hearing (3-year follow-up) using a within-subjects design.
- Assessed primary outcome: speech perception-in-noise; secondary outcomes: speech perception-in-silence, speech intelligibility-in-noise, and localization.
Main Results:
- No significant differences were observed in speech perception-in-noise, speech perception-in-silence, speech intelligibility-in-noise, or localization capabilities between simulated and real unilateral hearing conditions.
- Objective outcomes remained consistent across 1-, 2-, and 3-year follow-up periods.
Conclusions:
- Simulating unilateral hearing by deactivating one cochlear implant is a valid and reliable method for research.
- This simulation accurately represents real-world unilateral hearing experiences in individuals with bilateral cochlear implants.
- Findings support the continued use of this simulation technique in studies comparing unilateral and bilateral hearing outcomes.
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