Rhythmic modulation of prediction errors: A top-down gating role for the beta-range in speech processing.

ABSTRACT: Natural speech perception requires processing the ongoing acoustic input while keeping in mind the preceding one and predicting the next. This complex computational problem could be handled by a dynamic multi-timescale hierarchical inferential process that coordinates the information flow up and down the language network hierarchy. Using a predictive coding computational model (Precoss-β) that identifies online individual syllables from continuous speech, we address the advantage of a rhythmic modulation of up and down information flows, and whether beta oscillations could be optimal for this. In the model, and consistent with experimental data, theta and low-gamma neural frequency scales ensure syllable-tracking and phoneme-level speech encoding, respectively, while the beta rhythm is ass

SUBMITTER: Hovsepyan S 

PROVIDER: S-EPMC10655987 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature