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Updated: May 1, 2026
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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
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A uniform graphical representation of intensity coding in current-generation cochlear implant systems
Bart Vaerenberg1, Paul J Govaerts, Thomas Stainsby
11The Eargroup, Antwerp-Deurne, Belgium; 2Laboratory of Biomedical Physics, University of Antwerp, Belgium; 3Cochlear Ltd., Sydney, Australia; 4MED-EL, Innsbruck, Austria; 5Advanced Bionics, Stäfa, Switzerland; and 6Neurelec, Vallauris, France.
Ear and Hearing
|April 1, 2014
Summary
This study introduces a graphical tool to visualize how changes in mean arterial pressure (MAP) affect electrical current in cochlear implant (CI) electrodes. This visualization aids clinicians in better understanding and predicting CI behavior for improved programming.
Area of Science:
- Audiology
- Biomedical Engineering
- Neurosurgery
Background:
- Predicting the impact of mean arterial pressure (MAP) on cochlear implant (CI) electrical current is crucial for effective device programming.
- Current methods for understanding CI intensity coding are complex and vary across different CI manufacturers.
Purpose of the Study:
- To develop a unified graphical representation for illustrating the intensity-coding behavior of four major cochlear implant systems.
- To provide a tool that simplifies the understanding of how MAP changes influence electrical current delivery at CI electrodes.
Main Methods:
- Intensity coding in CI systems was analyzed by separating it into two key transformations: acoustic-to-channel amplitude and within-channel mapping.
- A uniform plotting method was synthesized across different CI brands (Cochlear, MED-EL, Advanced Bionics, Neurelec).
Main Results:
- A graphical plot was generated to depict the output of a CI channel in response to various input signals.
- An interactive software application was developed, visualizing intensity coding stages and fitting parameter impacts for each CI brand.
Conclusions:
- The developed graphical plot serves as an assistive tool for clinicians.
- This tool enhances the understanding and prediction of CI behavior, potentially leading to more informed interpretation and programming of cochlear implants.
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