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Related Experiment Video

Updated: Oct 5, 2025

Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process
07:00

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

Published on: June 21, 2024

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Electrically Evoked Auditory Late Responses as a Novel Method for Cochlear Implant Programming.

Rişvan Deniz1, Eyyup Kara1,2, Burcu Deniz1,2

  • 1Department of Otolaryngology, Head and Neck Surgery, Cerrahpaşa Medical Faculty.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology
|January 27, 2022
PubMed
Summary

Electrically evoked auditory late responses (eALR) show promise for objective cochlear implant (CI) fitting. This study found eALR effective for determining most comfortable levels (MCL) without impacting hearing performance.

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Area of Science:

  • Auditory neurophysiology
  • Cochlear implant audiology
  • Signal processing in hearing

Background:

  • Cochlear implant (CI) fitting relies on various objective and behavioral methods.
  • A need exists for objective measures confirming electrical signal transmission to the auditory cortex.
  • Electrically evoked auditory late responses (eALR) indicate auditory cortex activation.

Purpose of the Study:

  • To investigate the utility of eALR as an objective method for CI programming.
  • To compare CI programming using eALR with traditional methods.
  • To assess the impact of eALR-guided programming on audiological outcomes.

Main Methods:

  • Two programming strategies were compared in 21 unilateral Med-El CI users.
  • Program 1: Most comfortable level (MCL) set by electrical stapes reflex threshold (eSRT), behavioral threshold (THR) adjustment.
  • Program 2: MCL set using eALR visualization, THR set at the lowest eALR P1 wave detection level.

Main Results:

  • No significant difference in MCLs between the two programming methods.
  • Significant differences observed in THR levels between the programs.
  • No significant difference in free-field hearing and speech test performance.

Conclusions:

  • eALR can be a reliable objective method for determining MCL in CI programming.
  • CI programming using eALR did not compromise audiological performance.
  • Further research can explore eALR's role in optimizing CI fitting.