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Updated: Jun 26, 2026

Performing Intracochlear Electrocochleography During Cochlear Implantation

Performing Intracochlear Electrocochleography During Cochlear Implantation

Published on: March 8, 2022

Over-the-fence cochlear implantation: is it worthwhile?

Geneviàve Tremblay¹, François Bergeron, Pierre Ferron

¹Institut de réadaptation en déficience physique de Québec, Quebec City, Canada.

Journal of Otolaryngology - Head & Neck Surgery = Le Journal D'Oto-Rhino-Laryngologie Et De Chirurgie Cervico-Faciale

|January 9, 2009

Summary

Cochlear implant candidates can achieve better speech perception, potentially up to 80%, especially when using a contralateral hearing aid. This study suggests expanding current selection criteria for improved outcomes.

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Area of Science:

Audiology
Otorhinolaryngology
Biomedical Engineering

Background:

Cochlear implantation is a vital treatment for severe to profound hearing loss.
Optimizing patient selection is crucial for maximizing the benefits of cochlear implants.

Purpose of the Study:

To determine the upper limits of speech perception for potential cochlear implant recipients.
To evaluate if current selection criteria for cochlear implant candidacy can be broadened.

Main Methods:

A retrospective chart review of over 700 cochlear implant users was performed.
Patients with preimplantation sentence recognition scores above 40% were analyzed.
Pre- and postoperative speech recognition abilities were compared using a multimedia auditory test battery.

Related Experiment Videos

Last Updated: Jun 26, 2026

Performing Intracochlear Electrocochleography During Cochlear Implantation

Performing Intracochlear Electrocochleography During Cochlear Implantation

Published on: March 8, 2022

Main Results:

Preimplantation sentence recognition scores in the best-aided condition reached up to 80-85%.
Postimplantation word recognition with the implant alone showed gains, reaching up to 60% in quiet sentence recognition tests.
A theoretical gain was observed in speech perception post-implantation.

Conclusions:

Speech perception selection criteria for cochlear implants can be safely extended to 60%.
An upper limit of 80% may be achievable, particularly with the use of a contralateral hearing aid.
These findings support revising current candidacy guidelines for cochlear implants.