Related Experiment Video
Updated: Nov 20, 2025
06:04
Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
624
Factors Influencing Speech Perception in Adults With a Cochlear Implant
Floris Heutink1, Berit M Verbist2,3, Willem-Jan van der Woude2
1Department of Otorhinolaryngology, Radboudumc, Nijmegen, the Netherlands.
Ear and Hearing
|January 22, 2021
Summary
Cochlear implants with precurved electrodes significantly improve speech perception in adults. This finding holds true regardless of patient age, hearing history, or electrode placement, highlighting the electrode design
Area of Science:
- Otorhinolaryngology
- Biomedical Engineering
- Neuroscience
Background:
- Cochlear implantation (CI) is a vital treatment for severe to profound hearing loss.
- Optimizing speech perception outcomes in CI recipients is a key clinical goal.
- Understanding factors influencing CI performance is crucial for patient selection and device development.
Purpose of the Study:
- To identify factors affecting speech perception in adult cochlear implant recipients.
- To investigate the impact of electrode type (precurved vs. straight) on speech perception.
- To analyze biographic, audiologic, and electrode position variables influencing CI outcomes.
Main Methods:
- Cross-sectional study of 129 postlingual adult CI recipients with a single manufacturer's device.
- Speech perception tests (CVC words, digits-in-noise) and ultrahigh-resolution CT scans were performed.
- Evaluated biographic (age, education), audiologic (hearing thresholds), and electrode position (scalar location, depth, wrapping factor, type) variables.
Main Results:
- Precurved electrodes resulted in significantly better speech perception (11.8% higher CVC50 score) compared to straight electrodes, independent of other factors.
- Younger age at implantation correlated with better CVC50 scores in the straight electrode group.
- Precurved electrode recipients with poorer preoperative hearing performed better than straight electrode recipients with better preoperative hearing.
Conclusions:
- Cochlear implantation using precurved electrodes leads to superior speech perception outcomes.
- Electrode design is a significant factor in CI performance, independent of patient-specific and anatomical variables.
- The study suggests precurved electrodes may offer advantages for a broader range of hearing loss profiles.
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