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Related Experiment Videos

Correlation between electrical auditory brainstem response and perceptual thresholds in Digisonic cochlear implant

E Truy1, S Gallego, J M Chanal

  • 1Department of Otorhinolaryngology, de Chirurgie Cervico-Faciale et de Phoniatrie Hôpital Edouard Herriot, Lyon, France.

The Laryngoscope
|April 18, 1998
PubMed
Summary
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Electrically evoked auditory brainstem responses (EABRs) in cochlear implant (CI) users strongly correlate with psychophysical perception, aiding in setting optimization and detecting electrode failure.

Area of Science:

  • Audiology
  • Neuroscience
  • Biomedical Engineering

Background:

  • Multichannel cochlear implants (CIs) restore hearing in severe to profound deafness.
  • Assessing CI function and optimizing device programming is crucial for patient outcomes.
  • Electrically evoked auditory brainstem responses (EABRs) offer an objective measure of auditory pathway integrity.

Purpose of the Study:

  • To investigate the relationship between psychophysical perception and EABRs in CI users.
  • To evaluate the efficacy of EABRs in diagnosing cochlear implant electrode failure.
  • To explore EABRs as a tool for estimating CI device settings.

Main Methods:

  • A descriptive and correlational study design was employed.
  • EABR characteristics were recorded during activation of individual electrodes in nine Digisonic DX1OR CI users.

Related Experiment Videos

  • Correlations between EABR thresholds and behavioral perception thresholds were analyzed.

    • Main Results:

    • EABRs successfully identified electrode failure in one pediatric patient.
    • A significant positive correlation was found between EABR thresholds and perceptual thresholds (r = 0.98, P < 0.001).
    • EABR latencies and amplitudes were consistent with existing literature.

    Conclusions:

    • EABRs can assist in estimating device settings for the Digisonic DX10 CI, including in pediatric populations.
    • EABRs are a valuable tool for diagnosing cochlear implant electrode dysfunction.
    • Further research is needed to explore EABR quality for predicting rehabilitation prognosis.