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Updated: Feb 5, 2026
06:04
Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
846
Cognitive Functions in Adult Cochlear Implant Users, Cochlear Implant Candidates, and Normal-Hearing Listeners
Scott Kramer1, Kara J Vasil1, Oliver F Adunka1
1Department of Otolaryngology-Head and Neck Surgery The Ohio State University Wexner Medical Center Columbus Ohio U.S.A.
Laryngoscope Investigative Otolaryngology
|September 7, 2018
Summary
Severe hearing loss and cochlear implantation (CI) effects on cognition were studied. After accounting for factors like socioeconomic status, cognitive abilities were similar between hearing-impaired and normal-hearing adults.
Area of Science:
- Neuroscience
- Audiology
- Cognitive Psychology
Background:
- Hearing loss is increasingly linked to cognitive decline.
- Cochlear implantation (CI) may improve cognitive function in adults.
- This study investigates cognitive performance in adults with severe-to-profound hearing loss and CI users.
Purpose of the Study:
- To compare non-auditory cognitive abilities in post-lingually deafened adults with severe-to-profound hearing loss (CI users and candidates) against normal-hearing (NH) peers.
- To assess the impact of cochlear implantation on cognitive functions.
- To explore the relationship between hearing loss, cognitive decline, and demographic factors.
Main Methods:
- A cohort study was conducted at a tertiary neurotology center.
- Participants included 43 experienced CI users, 19 CI candidates, and 40 NH controls.
- Cognitive function was assessed using non-auditory measures including working memory, reasoning, processing speed, and verbal learning.
Main Results:
- Initially, CI users and candidates showed trends towards poorer performance in non-verbal reasoning, processing speed, lexical access, and verbal memory compared to NH peers.
- After controlling for gender, socioeconomic status (SES), and vocabulary, these cognitive differences diminished.
- Few significant cognitive differences were observed between experienced CI users and CI candidates.
Conclusions:
- Adult CI users, CI candidates, and NH peers exhibit comparable non-auditory cognitive abilities when SES and vocabulary are considered.
- The findings support a link between cognitive decline and hearing loss, potentially mediated by SES and vocabulary.
- Cognitive function in adults with severe hearing loss may not be substantially impaired after accounting for relevant covariates.
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