Predictive entrainment of natural speech through two fronto-motor top-down channels

Hyojin Park*, Gregor Thut, Joachim Gross

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)
223 Downloads (Pure)

Abstract

Natural communication between interlocutors is enabled by the ability to predict upcoming speech in a given context. Previously we showed that these predictions rely on a fronto-motor top-down control of low-frequency oscillations in auditory-temporal brain areas that track intelligible speech. However, a comprehensive spatio-temporal characterisation of this effect is still missing. Here, we applied transfer entropy to source-localised MEG data during continuous speech perception. First, at low frequencies (1-4 Hz, brain delta phase to speech delta phase), predictive effects start in left fronto-motor regions and progress to right temporal regions. Second, at higher frequencies (14-18 Hz, brain beta power to speech delta phase), predictive patterns show a transition from left inferior frontal gyrus via left precentral gyrus to left primary auditory areas. Our results suggest a progression of prediction processes from higher-order to early sensory areas in at least two different frequency channels.
Original languageEnglish
Pages (from-to)739-751
Number of pages13
JournalLanguage, Cognition and Neuroscience
Volume35
Issue number6
Early online date26 Sept 2018
DOIs
Publication statusPublished - 2 Jul 2020

Keywords

  • Speech
  • Entrainment
  • Top-down
  • Prediction
  • Beta
  • Delta

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