Speech outcomes in cochlear implant users depend on visual cross-modal cortical activity measured before or after implantation.

ABSTRACT: Cochlear implants can partially restore hearing function in deaf individuals, but long-term speech listening outcomes vary widely across cochlear implant users. Visual cross-modal plasticity, where auditory cortical neurons upregulate visual inputs to assist visual processing, is one factor proposed to worsen cochlear implant users' speech outcomes because it may limit auditory processing capability. However, evidence for this view is conflicting, and the relationship of cross-modal activity to speech perception may depend on other variables such as the type of visual activity and when it is assessed. To clarify, we measured visual cross-modal activity during a silent lip reading task using EEG in a cross-sectional, observational study. The study tested visual brain activation in 14 indivi

SUBMITTER: Paul BT 

PROVIDER: S-EPMC11851104 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature