Translating the Panoramic ECAP Method to Clinic

Authors: Charlotte Garcia1

1University of Cambridge

Background: The Panoramic ECAP Method (PECAP) uses Electrically Evoked Compound Action Potentials (ECAPs) to generate detailed patient-specific estimates of peripheral neural responsiveness and current spread for cochlear implant (CI) patients. It has detected localized areas of reduced neural responsiveness, manipulations to current spread, and differences in patterns of current spread between Cochlear © array types. This method can be leveraged for personalized programming of CI software, and may help individuals struggling to hear with their implants to reach their speech perception potential.

Methods: Previously, PECAP was only available as a research tool and required specialized programming experience to operate. This project develops a website that allows users to collect and analyse PECAP data without the need for specialist, non-clinical software. The site has two primary functions: (1) users can enter recording parameters and download data collection files that can be imported into Cochlear ©’s “Custom Sound EP” clinical software to record the PECAP data, and (2) users can upload collected PECAP data and analyse it using the PECAP algorithm, extracting plots and data that describe the current-spread and neural-responsiveness estimates for their individual users.

Results: The website has basic functionality but is under assessment at the time of abstract submission. It has been confirmed to provide the same results as the research-grade software, and is being evaluated for usability by researchers and clinicians.

Conclusion: Development of PECAP into an online platform will not only enable external researchers to analyse their own data, but will also allow clinicians to access the resource. We hope that this will increase the ability of clinicians to provide personalised hearing healthcare to cochlear implant users.