Related Experiment Video
Updated: Jun 22, 2025
09:10
Performing Intracochlear Electrocochleography During Cochlear Implantation
Published on: March 8, 2022
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ZH-ECochG Bode Plot: A Novel Approach to Visualize Electrocochleographic Data in Cochlear Implant Users.
Marlies Geys1, Leanne Sijgers1, Ivo Dobrev1
1Department of Otorhinolaryngology, Head & Neck Surgery, University Hospital Zurich, University of Zurich, 8091 Zurich, Switzerland.
Journal of Clinical Medicine
|June 27, 2024
Summary
A new ZH-ECochG Bode plot standardizes electrocochleography (ECochG) visualization for cochlear implant (CI) users. This method enhances comparisons of ECochG data across studies and individuals.
Area of Science:
- Audiology and Bioengineering
- Biomedical Signal Processing
- Medical Imaging and Visualization
Background:
- Existing visualizations for electrocochleography (ECochG) along the basilar membrane (BM) lack standardization.
- This heterogeneity hinders comparisons of ECochG data within and between cochlear implant (CI) users and across publications.
- A systematic review identified diverse visualization methods in the literature.
Purpose of the Study:
- To synthesize existing ECochG visualization techniques found in scientific literature.
- To introduce a novel, generalized framework for visualizing ECochG data in CI users.
- To facilitate more consistent and accurate analysis of ECochG recordings.
Main Methods:
- Conducted a systematic review of PubMed and EMBASE for studies on ECochG and CI.
- Analyzed figures from 74 articles (115 figures) that visualized ECochG responses.
- Developed the ZH-ECochG Bode plot, incorporating advantages from existing methods and tested on three CI recipients.
Main Results:
- Identified various ECochG visualization approaches with differing axes and conventions.
- The novel ZH-ECochG Bode plot visualizes ECochG amplitude and phase across tonotopic regions and insertion depths.
- The plot integrates pre- and postoperative audiograms for direct comparison with ECochG responses.
Conclusions:
- The ZH-ECochG Bode plot offers a standardized, generalized visual representation for ECochG data.
- This visualization facilitates the study of complex ECochG potentials along the basilar membrane.
- Improved comparisons of ECochG recordings within and among CI users and publications are now possible.
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