HAL : hal-00589352, version 1

DOI : 10.1002/hbm.21363

Fiche détaillée

Récupérer au format BibTeX - EndNote - TEI - RefWorks -

Human Brain Mapping (2011) Article first published online: 8 AUG 2011

Functional MRI assessment of orofacial articulators: neural correlates of lip, jaw, larynx and tongue movements

Krystyna Grabski (  Auteur correspondant ) 1, Laurent Lamalle 2, Coriandre Emmanuel Vilain 1, Jean-Luc Schwartz 1, Irène Troprès 2, Nathalie Vallée 1, Monica Baciu 3, Jean-François Le Bas 2, 4, Marc Sato 1

(2011)

Compared to complex coordinated orofacial actions, few neuroimaging studies have attempted to determine the shared and distinct neural substrates of supralaryngeal and laryngeal articulatory movements when performed independently. In order to determine cortical and subcortical regions associated with supralaryngeal motor control, participants produced lip, tongue and jaw movements while undergoing functional magnetic resonance imaging (fMRI). For laryngeal motor activity, participants produced the steady-state /i/ vowel. A sparse temporal sampling acquisition method was used to minimize movement-related artifacts. Three main findings were observed. First, the four tasks activated a set of largely overlapping, common brain areas: the sensorimotor and premotor cortices, the right inferior frontal gyrus, the supplementary motor area, the left parietal operculum and the adjacent inferior parietal lobule, the basal ganglia and the cerebellum. Second, differences between tasks were restricted to the bilateral auditory cortices and to the left ventrolateral sensorimotor cortex, with greater signal intensity for vowel vocalization. Finally, a dorso-ventral somatotopic organization of lip, jaw, vocalic/laryngeal and tongue movements was observed within the primary motor and somatosensory cortices using individual ROI analyses. These results provide evidence for a core neural network involved in laryngeal and supralaryngeal motor control and further refine the sensorimotor somatotopic organization of orofacial articulators.

1 :	Grenoble Images Parole Signal Automatique (GIPSA-lab)
	CNRS : UMR5216 – Université Joseph Fourier - Grenoble I – Université Pierre-Mendès-France - Grenoble II – Université Stendhal - Grenoble III – Institut Polytechnique de Grenoble - Grenoble Institute of Technology
2 :	RMN biomédicale : de la cellule à l'homme (RBCH)
	CNRS : IFR1 – INSERM : IFR1 – DIR CENTRALE DU SSA – CHU Grenoble – Université Joseph Fourier - Grenoble I – Université Pierre-Mendès-France - Grenoble II
3 :	Laboratoire de psychologie et neurocognition (LPNC)
	CNRS : UMR5105 – Université Pierre-Mendès-France - Grenoble II – Université Joseph Fourier - Grenoble I – Université de Savoie
4 :	Grenoble Institut des Neurosciences (GIN)
	INSERM : U836 – Université Joseph Fourier - Grenoble I – CHU Grenoble – CEA : DSV/IRTSV

Domaine

:

Sciences cognitives/Neurosciences Sciences cognitives/Linguistique Sciences cognitives/Psychologie Sciences de l'Homme et Société/Linguistique Sciences de l'Homme et Société/Psychologie

hal-00589352, version 1

http://hal.archives-ouvertes.fr/hal-00589352

oai:hal.archives-ouvertes.fr:hal-00589352

Contributeur : Marc Sato <>

Soumis le : Jeudi 28 Avril 2011, 16:46:41

Dernière modification le : Jeudi 23 Août 2012, 16:44:49