Alpha oscillatory activity reveals focused-attentional disparity between cochlear implant users and normal hearing listeners

Cochlear implants (CIs) allow hearing-impaired subjects to regain access to speech. However, the individual outcome variability remains high and unexplained. One contributing factor to the CI performance could be related to higher cognitive functions, which are not as well studied as in normal hearing (NH) populations....

Alpha oscillatory activity differences between cochlear implant users and normal-hearing listeners offer a potential biomarker for attention-related outcome variability, but this is preliminary neurophysiological research; no change to CI fitting or rehabilitation practice is warranted yet.

Identifying neural markers of attentional processing in cochlear implant users could eventually guide personalised rehabilitation strategies and help explain the wide variability in real-world speech understanding outcomes.

1. 01Alpha brain oscillations differ between cochlear implant users and normal-hearing listeners during focused attention tasks.
2. 02Attentional disparity may partly explain the large variability in cochlear implant speech-understanding outcomes.
3. 03Published in Scientific Reports (PMID 42106549; DOI 10.1038/s41598-026-52434-6).
4. 04Study is neurophysiological; findings are not yet translated into clinical fitting or auditory rehabilitation protocols.
5. 05Could inform future brain-computer interface or neurofeedback-based CI rehabilitation research.

PMID

42106549

DOI

10.1038/s41598-026-52434-6.

Journal

Scientific Reports

Publication type

research_article

Evidence level

3

Population

Cochlear implant users and normal-hearing listeners

Intervention

EEG measurement of alpha oscillatory brain activity during focused attention tasks

Comparator

Normal-hearing listeners