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Updated: Jun 19, 2026

Performing Intracochlear Electrocochleography During Cochlear Implantation
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Published on: March 8, 2022

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Cognitive processing speed improvement after cochlear implantation.

Isabelle Mosnier1, Joël Belmin2, Domenico Cuda3

  • 1Unité Fonctionnelle Implants Auditifs, ORL, GH Pitié-Salpêtrière, AP-HP Sorbonne Université and Université Paris Cité, Institut Pasteur, AP-HP, Inserm, Fondation Pour l'Audition, Institut de l'Audition, Paris, France.

Frontiers in Aging Neuroscience
|October 2, 2024
PubMed
Summary
This summary is machine-generated.

Cochlear implants (CIs) improved hearing and processing speed in younger seniors, but cognitive flexibility remained impaired in older adults with hearing loss. Further research is needed to understand long-term cognitive impacts.

Keywords:
cochlear implantcognitiondeclineelderlyhealthy aging

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Area of Science:

  • Audiology
  • Neuroscience
  • Gerontology

Background:

  • Untreated hearing loss impacts cognition due to increased auditory processing demands.
  • Hearing devices may mitigate cognitive resource depletion caused by hearing loss.

Purpose of the Study:

  • To assess the cognitive impact of cochlear implants (CIs) in older adults with severe to profound hearing loss.
  • To compare cognitive function pre- and post-CI implantation across different age groups.

Main Methods:

  • 100 subjects (≥60 years) with bilateral hearing loss received CIs.
  • Cognitive tests (MMSE, TMT-B, DSC, TUG) and hearing questionnaires were administered pre- and post-implantation (12 & 18 months).
  • Participants were grouped into young-old (60-64), middle-old (65-75), and old-old (75+).

Main Results:

  • Hearing significantly improved across all age groups post-CI.
  • No significant changes were observed in MMSE, TMT-B, or TUG scores.
  • Digit Symbol Coding (DSC) scores improved significantly in the 60-64 age group at 12 and 18 months post-CI.

Conclusions:

  • Cochlear implantation may enhance processing speed and attention in younger older adults by reallocating cognitive resources.
  • Older adults receiving CIs may still exhibit deficits in cognitive flexibility and processing speed compared to normally hearing peers.
  • This study provides valuable reference data for cognitive function in hearing-impaired individuals using CIs.