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Master Thesis

Variables affectant la latéralisation hémisphérique du langage chez des sujets mono- et plurilingues, à travers l’utilisation d’un paradigme en champs visuels divisés

Abstract : The dominant role of the left hemisphere (LH) in processing language has been well established and is now a fundamental principle of the brain functional organisation. It appears that several inter-individual factors can be identified as having an influence on this organisation. The current study aimed at investigating factors which could have an influence on language hemispheric lateralisation, by using a simple and reliable visual half-field (VHF) paradigm, the translingual lexical decision task (TLDT), that can measure language lateralisation. We tested a sample of 82 French participants. They all performed different questionnaires about laterality (handedness, footedness, eyedness and eareness), as well as foreign language tests, all being mono- or plurilinguals, speaking Spanish or English in addition to French as their mother tongue. A significant right-visual-field/LH advantage corresponding to the dominance of the LH for language was revealed for accuracy and reaction times, with a higher significance for accuracy. However, subjects with low footedness scores and low proficiency in a second language (L2) appeared to be less lateralised than others. Moreover, footedness was more related to language lateralisation than handedness. These findings suggest that footedness should be taken into consideration, and be preferentially used instead of handedness in studies about cerebral lateralisation, and that a higher proficiency in a L2 can reduce asymmetry for language.
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https://dumas.ccsd.cnrs.fr/dumas-03087115
Contributor : Bu Carreire Université de Bordeaux <>
Submitted on : Wednesday, December 23, 2020 - 12:59:54 PM
Last modification on : Friday, January 29, 2021 - 3:10:24 AM

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  • HAL Id : dumas-03087115, version 1

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Mathilde Vildy. Variables affectant la latéralisation hémisphérique du langage chez des sujets mono- et plurilingues, à travers l’utilisation d’un paradigme en champs visuels divisés. Sciences cognitives. 2020. ⟨dumas-03087115⟩

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