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Electrical middle ear muscle reflex: use in cochlear implant programming

A V Hodges1, T J Balkany, R A Ruth

  • 1Department of Otolaryngology, University of Miami Ear Institute, FL 33101, USA.

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|October 23, 1997
PubMed
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Cochlear implants in children.

Otolaryngologic clinics of North America·2001

Electrically elicited middle ear muscle reflexes (eMEMR) offer an objective method for programming cochlear implants (CIs). This technique accurately estimates loudness perception, aiding young children receiving CIs.

Area of Science:

  • Audiology
  • Biomedical Engineering
  • Neuroscience

Background:

  • Cochlear implant (CI) programming relies on subjective patient feedback, which is challenging for young children.
  • Accurate loudness perception programming is crucial to avoid discomfort or pain.

Purpose of the Study:

  • To evaluate electrically elicited middle ear muscle reflexes (eMEMR) for objective CI programming.
  • To assess the correlation between eMEMR and subjective loudness perception.
  • To determine the reliability and utility of eMEMR in CI fitting.

Main Methods:

  • Studied 25 postlinguistically deafened adult CI users and attempted reflexes on 40 children.
  • Measured eMEMR characteristics and compared them to subjective loudness judgments.
  • Assessed the reliability of eMEMR responses.

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Main Results:

  • eMEMR provided objective confirmation of electrical stimulation in CI users.
  • Comfort levels predicted by eMEMR strongly correlated with subjective assessments in adults.
  • eMEMR responses were present in 71% of pediatric participants.

Conclusions:

  • eMEMR is a reliable and accurate objective measure for estimating maximum comfortable loudness levels in CI users.
  • This method can significantly aid in the initial programming of cochlear implants, especially for young recipients.
  • eMEMR offers a valuable tool to overcome challenges in subjective programming for pediatric CI users.