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Related Experiment Video

Updated: Jul 13, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Published on: March 24, 2023

Perceptual benefit and functional outcomes for children using sequential bilateral cochlear implants.

Karyn Louise Galvin1, Mansze Mok, Richard C Dowell

  • 1Department of Otolaryngology, The University of Melbourne, East Melbourne, VIC, Australia. kgalvin@unimelb.edu.au

Ear and Hearing
|July 5, 2007
PubMed
Summary

Bilateral cochlear implants (CIs) can offer children improved speech perception in noise and daily function. However, benefits vary, and binaural listening skills like localization may not develop within the first six months.

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Journal of clinical medicine·2020

Area of Science:

  • Audiology
  • Otolaryngology
  • Pediatric Medicine

Background:

  • Sequential bilateral cochlear implantation (CI) involves receiving a second CI after using a first.
  • Evaluating the benefits of bilateral CIs in children is crucial for optimizing auditory rehabilitation.

Purpose of the Study:

  • To assess the added perceptual benefits of two CIs versus one in children with sequential bilateral implantation.
  • To compare speech perception and spatial hearing abilities with single vs. bilateral CIs.

Main Methods:

  • Eleven children (age 4-15) with profound bilateral hearing loss received a second CI.
  • Speech perception and horizontal localization were tested in single-implant and bilateral conditions.
  • Parental questionnaires and reports tracked device use, attitude, and performance.

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Last Updated: Jul 13, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Published on: March 24, 2023

Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process
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Main Results:

  • Eight of ten children showed improved speech perception in noise when presented ipsilateral to the first CI.
  • No significant benefit in localization or when noise was contralateral to the first CI was observed.
  • Parental ratings indicated improved spatial hearing and daily function for most children with bilateral CIs.

Conclusions:

  • Children aged 4+ may gain significant benefits from a second CI, including better speech perception and functional hearing.
  • Bilateral CI use showed more positive attitudes and consistent device use in most children.
  • Factors influencing benefit require further investigation to guide clinical decisions on second CI implantation.