Cochlear implants (CIs) restore hearing in individuals with severe sensorineural hearing loss. In recent years, electrically evoked auditory steady-state responses (EASSRs) to amplitude modulated (AM) signals have been studied as an objective measure. EASSRs can be objectively detected in electroencephalography (EEG) recordings at the modulation frequency using statistical tests....
No immediate practice change; findings are methodological groundwork for researchers using EEG with cochlear-implant users, not a guide for clinical fitting or rehabilitation decisions.
Accurately characterizing and eventually removing cochlear-implant stimulation artifacts is a prerequisite for reliable objective hearing assessment in CI users, which could ultimately improve fitting and research validity.
- 01CI electrical stimulation creates large artifacts in EEG that can obscure neural responses of interest.
- 02Study combines theoretical modelling and bench/in-vivo experiments to characterise artifact properties.
- 03Focus is on electrically evoked auditory steady-state responses (EASSR), a key objective CI outcome measure.
- 04Results provide a systematic framework to guide artifact reduction strategies in future EEG-CI research.
- 05Published in IEEE Transactions on Neural Systems and Rehabilitation Engineering.
Cochlear-implant stimulation produces characterisable electrical artifacts in EEG recordings that follow predictable theoretical models.
studypartially supportedElectrically evoked auditory steady-state responses (EASSRs) are specifically affected by CI stimulation artifacts in EEG.
studysupported- PMID
- 42247548
- DOI
- 10.1109/TNSRE.2026.3700284.
- Journal
- IEEE Transactions on Neural Systems and Rehabilitation Engineering
- Publication type
- research_article
- Evidence level
- 2b
- Population
- Cochlear-implant users and/or experimental models used to characterise EEG stimulation artifacts
- Intervention
- Theoretical and experimental characterisation of CI-generated electrical stimulation artifacts in EEG
Primary outcomes
Characterisation of artifact morphology and magnitude in EEG recordings; Validation of theoretical artifact model against experimental data; Assessment of artifact impact on electrically evoked auditory steady-state responses (EASSRs)