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La réorganisation fonctionnelle des aires cérébrales du langage et de l'organisation visuospatiale. Influence des régularités environnementales lors d'un entraînement non verbal : études en IRMf

Abstract : The language ability is a critical aspect of experimental design in functional imaging studies. Today, it is commonly accepted that the brain structures underlying the language are more distributed than the traditional Broca's and Wernicke's areas. Currently, some other areas as the premotor cortex, the supplementary motor area, the cerebellum or subcortical structures, notably, are recognised. However, a lesser studied question is to determine whether it is possible to observe a partial reorganisation of the activation observed during language tasks when the subjects have been trained to develop specific non-verbal abilities. Notably, a new theoretical framework claims that probabilistic regularities are the basis of the language acquisition processing. In this context, our goal was to test wether it is possible to develop some activations in areas implicated during language tasks by specific non-verbal probabilistic activities. 10 subjects have been trained to develop their probabilistic abilities by using specific tools: the Concrete Representations of Formal Systems. 10 others subjects composed a control group. Results show a greater activation in subcortical structures (in basal ganglia) during a verb generation task, particularly in the anterior part of the caudate nucleus for the experimental group. It might thus be possible that this area represents a “crossroad” between verbal and non-verbal activities.
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https://tel.archives-ouvertes.fr/tel-00134711
Contributor : Laurent Lefebvre <>
Submitted on : Monday, March 5, 2007 - 9:22:40 AM
Last modification on : Friday, October 23, 2020 - 4:36:37 PM
Long-term archiving on: : Friday, September 21, 2012 - 12:25:23 PM

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Laurent Lefebvre. La réorganisation fonctionnelle des aires cérébrales du langage et de l'organisation visuospatiale. Influence des régularités environnementales lors d'un entraînement non verbal : études en IRMf. Linguistique. Université de Mons-Hainaut, 2006. Français. ⟨tel-00134711⟩

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