Attention to audiovisual speech shapes neural processing through feedback-feedforward loops between different nodes of the speech network.

ABSTRACT: Selective attention-related top-down modulation plays a significant role in separating relevant speech from irrelevant background speech when vocal attributes separating concurrent speakers are small and continuously evolving. Electrophysiological studies have shown that such top-down modulation enhances neural tracking of attended speech. Yet, the specific cortical regions involved remain unclear due to the limited spatial resolution of most electrophysiological techniques. To overcome such limitations, we collected both electroencephalography (EEG) (high temporal resolution) and functional magnetic resonance imaging (fMRI) (high spatial resolution), while human participants selectively attended to speakers in audiovisual scenes containing overlapping cocktail party speech. To utilise the

SUBMITTER: Wikman P 

PROVIDER: S-EPMC10957087 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature