The cortical dynamics of speaking: Lexical and phonological knowledge simultaneously recruit the frontal and temporal cortex within 200 ms

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• dc.contributor.author Strijkers, Kristof
• dc.contributor.author Costa, Albert, 1970-
• dc.contributor.author Pulvermüller, Friedemann
• dc.date.accessioned 2021-06-07T09:59:50Z
• dc.date.available 2021-06-07T09:59:50Z
• dc.date.issued 2017
• dc.description.abstract Language production models typically assume that retrieving a word for articulation is a sequential process with substantial functional delays between conceptual, lexical, phonological and motor processing, respectively. Nevertheless, explicit evidence contrasting the spatiotemporal dynamics between different word production components is scarce. Here, using anatomically constrained magnetoencephalography during overt meaningful speech production, we explore the speed with which lexico-semantic versus acoustic-articulatory information of a to-be-uttered word become first neurophysiologically manifest in the cerebral cortex. We demonstrate early modulations of brain activity by the lexical frequency of a word in the temporal cortex and the left inferior frontal gyrus, simultaneously with activity in the motor and the posterior superior temporal cortex reflecting articulatory-acoustic phonological features (+LABIAL vs. +CORONAL) of the word-initial speech sounds (e.g., Monkey vs. Donkey). The specific nature of the spatiotemporal pattern correlating with a word's frequency and initial phoneme demonstrates that, in the course of speech planning, lexico-semantic and phonological-articulatory processes emerge together rapidly, drawing in parallel on temporal and frontal cortex. This novel finding calls for revisions of current brain language theories of word production.
• dc.description.sponsorship We thank Elin Runnqvist for her useful comments on previous versions of the manuscript and we are grateful to Max Garagnani, Yuri Shtyrov and Olaf Hauk for the technical help with the MEG analyses. Kristof Strijkers received funding for this research from the People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme (FP7/2007–2013) under REA grant agreement number 302807, and from the French Ministry of Research (grant number: ANR16-CE28-0007-01)
• dc.format.mimetype application/pdf
• dc.identifier.citation Strijkers K, Costa A, Pulvermüller F. The Cortical dynamics of speaking: Lexical and phonological knowledge simultaneously recruit the frontal and temporal cortex within 200 ms. Neuroimage. 2017;163:206-19. DOI: 10.1016/j.neuroimage.2017.09.041
• dc.identifier.doi http://dx.doi.org/10.1016/j.neuroimage.2017.09.041
• dc.identifier.issn 1053-8119
• dc.identifier.uri http://hdl.handle.net/10230/47783
• dc.language.iso eng
• dc.publisher Elsevier
• dc.relation.ispartof NeuroImage. 2017;163:206-19
• dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/302807
• dc.rights © Elsevier http://dx.doi.org/10.1016/j.neuroimage.2017.09.041
• dc.rights.accessRights info:eu-repo/semantics/openAccess
• dc.subject.keyword Language
• dc.subject.keyword Speech production
• dc.subject.keyword Spatiotemporal brain activity
• dc.subject.keyword MEG
• dc.subject.keyword Sensorimotor circuits
• dc.title The cortical dynamics of speaking: Lexical and phonological knowledge simultaneously recruit the frontal and temporal cortex within 200 ms
• dc.type info:eu-repo/semantics/article
• dc.type.version info:eu-repo/semantics/acceptedVersion