Auditory cortical delta-entrainment interacts with oscillatory power in multiple fronto-parietal networks

Keitel, A. , Ince, R. A.A. , Gross, J. and Kayser, C. (2017) Auditory cortical delta-entrainment interacts with oscillatory power in multiple fronto-parietal networks. NeuroImage, 147, pp. 32-42. (doi:10.1016/j.neuroimage.2016.11.062) (PMID:27903440) (PMCID:PMC5315055)

Keitel, A. , Ince, R. A.A. , Gross, J. and Kayser, C. (2017) Auditory cortical delta-entrainment interacts with oscillatory power in multiple fronto-parietal networks. NeuroImage, 147, pp. 32-42. (doi:10.1016/j.neuroimage.2016.11.062) (PMID:27903440) (PMCID:PMC5315055)

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Abstract

The timing of slow auditory cortical activity aligns to the rhythmic fluctuations in speech. This entrainment is considered to be a marker of the prosodic and syllabic encoding of speech, and has been shown to correlate with intelligibility. Yet, whether and how auditory cortical entrainment is influenced by the activity in other speech–relevant areas remains unknown. Using source-localized MEG data, we quantified the dependency of auditory entrainment on the state of oscillatory activity in fronto-parietal regions. We found that delta band entrainment interacted with the oscillatory activity in three distinct networks. First, entrainment in the left anterior superior temporal gyrus (STG) was modulated by beta power in orbitofrontal areas, possibly reflecting predictive top-down modulations of auditory encoding. Second, entrainment in the left Heschl's Gyrus and anterior STG was dependent on alpha power in central areas, in line with the importance of motor structures for phonological analysis. And third, entrainment in the right posterior STG modulated theta power in parietal areas, consistent with the engagement of semantic memory. These results illustrate the topographical network interactions of auditory delta entrainment and reveal distinct cross-frequency mechanisms by which entrainment can interact with different cognitive processes underlying speech perception.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Keitel, Dr Anne and Kayser, Professor Christoph and Ince, Dr Robin and Gross, Professor Joachim
Authors: Keitel, A., Ince, R. A.A., Gross, J., and Kayser, C.
College/School:College of Medical Veterinary and Life Sciences > Institute of Neuroscience and Psychology
Journal Name:NeuroImage
Publisher:Elsevier
ISSN:1053-8119
ISSN (Online):1095-9572
Published Online:27 November 2016
Copyright Holders:Copyright © 2016 The Authors
First Published:First published in Neuroimage 147:32-42
Publisher Policy:Reproduced under a creative commons license

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
658701Pathways and mechanisms underlying the visual enhancement of hearing in challenging environments.Christoph KayserBiotechnology and Biological Sciences Research Council (BBSRC)BB/L027534/1INP - CENTRE FOR COGNITIVE NEUROIMAGING
670551DynaSensChristoph KayserEuropean Research Council (ERC)646657INP - CENTRE FOR COGNITIVE NEUROIMAGING
597051Natural and modulated neural communication: State-dependent decoding and driving of human Brain Oscillations.Joachim GrossWellcome Trust (WELLCOME)098433/Z/12/ZINP - CENTRE FOR COGNITIVE NEUROIMAGING