Cognitive Outcomes After Cochlear Implantation in Older Adults: A Narrative Review of Current Evidence, Mechanisms, and Long-Term Perspectives

Hearing loss is highly prevalent among older adults and represents a growing public health burden. Increasing attention has been given to the associations between hearing loss, cognitive decline, and dementia risk. Cochlear implantation is an established intervention for adults with severe-to-profound sensorineural hearing loss who obtain limited benefit from conventional amplification, but its potential cognitive...

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Evidence from this narrative review suggests cochlear implantation may have positive cognitive effects in older adults, but the findings are preliminary and heterogeneous; no change to current implant candidacy decisions is warranted until higher-quality prospective studies are available.

As audiology increasingly recognizes the hearing–cognition link, understanding whether cochlear implantation can slow cognitive decline in older adults has major implications for candidacy criteria and counseling.

1. 01Narrative review synthesizes evidence on cognitive outcomes (e.g., memory, attention) after cochlear implantation in older adults.
2. 02Proposes mechanisms by which restored auditory input may influence cognitive function.
3. 03Long-term cognitive trajectories post-implantation remain incompletely characterized.
4. 04Study quality and heterogeneity across included evidence limits definitive conclusions.
5. 05Findings could inform future candidacy guidelines for older cochlear implant candidates.

PMID

42345627

DOI

10.3390/audiolres16030088.

Journal

Audiology Research

Publication type

review

Evidence level

5

Population

Older adults undergoing cochlear implantation

Intervention

Cochlear implantation