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Updated: Jan 30, 2026

Author Spotlight: Optimizing EAS with Long Electrodes for Enhanced Cochlear Coverage and Hearing Preservation
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Optimizing maps for electric acoustic stimulation users.

Yang-Soo Yoon1, You-Ree Shin2, Ji-Min Kim2

  • 1a Department of Communication Sciences and Disorders , Baylor University , Waco , TX , USA.

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|January 30, 2019
PubMed
Summary
This summary is machine-generated.

Optimizing sound maps for Electric Acoustic Stimulation (EAS) users enhances hearing performance. Tailoring these maps to individual aided hearing thresholds improves outcomes for diverse hearing loss profiles.

Keywords:
Cochlear implantEAS frequency mapsEAS subject groupingElectric acoustic stimulationSpeech perception in EAS

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Area of Science:

  • Audiology
  • Neuroscience
  • Biomedical Engineering

Background:

  • Electric Acoustic Stimulation (EAS) combines electric and acoustic hearing.
  • Optimizing sound processing maps is crucial for EAS users.
  • Individual hearing thresholds vary significantly among EAS patients.

Purpose of the Study:

  • To optimize patient sound maps in Electric Acoustic Stimulation (EAS) based on post-operative aided hearing thresholds.
  • To evaluate the effectiveness of different sound map configurations (Full Overlap, Narrow Overlap, Gap, Meet) for various EAS patient groups.

Main Methods:

  • Twenty-one adult EAS patients were categorized into three groups based on unaided hearing thresholds: Electric Complementary (EC), EAS, and Marginal-EAS (M-EAS).
  • Speech perception in noise, melodic contour identification, and subjective preferences were assessed.
  • Performance was evaluated using four distinct sound map types.

Main Results:

  • The highest performing maps varied by patient group: Gap for EC, Meet for EAS, and Full Overlap for M-EAS.
  • These map preferences were consistent across different test materials.
  • Results aligned with subjective patient preferences.

Conclusions:

  • Clinical fitting for EAS listening requires individual tailoring.
  • Optimizing sound maps between acoustic and electric stimulation, based on aided hearing thresholds, can enhance EAS performance.
  • Personalized map optimization is key to maximizing benefits for EAS users.