Cortical tracking of formant modulations derived from silently presented lip movements and its decline with age.

ABSTRACT: The integration of visual and auditory cues is crucial for successful processing of speech, especially under adverse conditions. Recent reports have shown that when participants watch muted videos of speakers, the phonological information about the acoustic speech envelope, which is associated with but independent from the speakers' lip movements, is tracked by the visual cortex. However, the speech signal also carries richer acoustic details, for example, about the fundamental frequency and the resonant frequencies, whose visuophonological transformation could aid speech processing. Here, we investigated the neural basis of the visuo-phonological transformation processes of these more fine-grained acoustic details and assessed how they change as a function of age. We recorded whole-head m

SUBMITTER: Suess N 

PROVIDER: S-EPMC9627034 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature