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Article Dans Une Revue NeuroImage Année : 2021

Neural oscillations track natural but not artificial fast speech: Novel insights from speech-brain coupling using MEG

Ana Sofía Hincapié Casas
  • Fonction : Auteur
Tarek Lajnef
  • Fonction : Auteur
Annalisa Pascarella
  • Fonction : Auteur
Hélène Guiraud-Vinatea
  • Fonction : Auteur
Hannu Laaksonen
  • Fonction : Auteur
Dimitri Bayle
  • Fonction : Auteur
  • PersonId : 765087
  • IdRef : 157504395
Karim Jerbi
  • Fonction : Auteur
Véronique Boulenger

Résumé

Neural oscillations contribute to speech parsing via cortical tracking of hierarchical linguistic structures, including syllable rate. While the properties of neural entrainment have been largely probed with speech stimuli at either normal or artificially accelerated rates, the important case of natural fast speech has been largely overlooked. Using magnetoencephalography, we found that listening to naturally-produced speech was associated with cortico-acoustic coupling, both at normal (∼6 syllables/s) and fast (∼9 syllables/s) rates, with a corresponding shift in peak entrainment frequency. Interestingly, time-compressed sentences did not yield such coupling, despite being generated at the same rate as the natural fast sentences. Additionally, neural activity in right motor cortex exhibited stronger tuning to natural fast rather than to artificially accelerated speech, and showed evidence for stronger phase-coupling with left temporo-parietal and motor areas. These findings are highly relevant for our understanding of the role played by auditory and motor cortex oscillations in the perception of naturally produced speech.
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Dates et versions

hal-03373459 , version 1 (11-10-2021)

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Ana Sofía Hincapié Casas, Tarek Lajnef, Annalisa Pascarella, Hélène Guiraud-Vinatea, Hannu Laaksonen, et al.. Neural oscillations track natural but not artificial fast speech: Novel insights from speech-brain coupling using MEG. NeuroImage, 2021, 244, pp.118577. ⟨10.1016/j.neuroimage.2021.118577⟩. ⟨hal-03373459⟩
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