Communication profiles and executive impairments following right-hemisphere stroke: a crosscultural perspective / Perrine Ferré

Réalisation : 22 juin 2012 Mise en ligne : 22 juin 2012
  • document 1 document 2 document 3
  • niveau 1 niveau 2 niveau 3
  • audio 1 audio 2 audio 3

Communication profiles and executive impairments following right-hemisphere stroke: a crosscultural perspective / Perrine Ferré. In "Perspectives neuropsycholinguistiques sur l'aphasie - NeuroPsychoLinguistic Perspectives on Aphasia", colloque international organisé par l'Unité de Recherche Interdisciplinaire Octogone de l'Université Toulouse II-Le Mirail (France). Toulouse, 21-23 juin 2012.

It is now accepted among thescientific and clinical community that a right-hemisphere-stroke maylead to communication disorders. Former studies estimate that atleast 50% of right hemisphere damaged individuals have prosodic,discourse, pragmatics and/or lexico-semantic disorders. These aspectsof communication have been described in isolation in the literature,but only a few studies have been devoted to the fact that they mightco-exist in a same individual. Even fewer studies have been based ona crosscultural perspective. Executive impairments and othercognitive processes have been suspected to underlie communicationdeficits, suggesting that communication deficits are notlanguage-specific, but no study at large scale is available toconfirm this hypothesis. Like the portraits of aphasiaassociated with left brain injury, describing patterns ofcommunication following a right brain damage will help properidentification and clinical intervention in speech and languagetherapy. This research aimed at classifying communication profilesamong right-brain-damaged adults with an intercultural perspectiveand with regards to other cognitive processes. The sample is made up of 154right-brain-damaged individuals from four nationalities (Canadians,Brazilians, Italians and Argentineans). They were assessed using 13language tasks from the Protocol MEC and a neuropsychological batteryaddressing executive processing and attention. A hierarchical cluster analysisrevealed four distinct clinical profiles of communication: 1-extensive impairments in all components; 2-mixed impairments ofsemantic, prosodic and discursive fields; 3-exclusive conversationimpairment and 4- mild or no impairment. Since only few distinctions betweennationalities were to be observed, the results suggest that thereprobably is a universality of clinical profiles after a right braindamage. Exploration of executive impairment indicates that deficitsin inhibition, cognitive flexibility and attention mayexacerbate the severity and extent of deficits in allcomponents of communication. Nonetheless, there is no linearassociation between profiles of communication and executiveimpairments. Furthermore, clear dissociations at theindividual level are observable. This study proposes a specifictaxonomy of communication disorders among right-brain-damagedindividuals in a crosscultural and cognitive perspective. It mightcontribute to a better detection of communication disorders and tothe development of a more accurate clinical intervention for adultssuffering from consequences of a right hemisphere stroke. 

Langue :
Université Toulouse II-Le Mirail SCPAM (Publication), Université Toulouse II-Le Mirail (Production), Bruno BASTARD (Réalisation)
Conditions d'utilisation
Tous droits réservés à l'Université Toulouse II-Le Mirail et aux auteurs.
Citer cette ressource:
UT2J. (2012, 22 juin). Communication profiles and executive impairments following right-hemisphere stroke: a crosscultural perspective / Perrine Ferré. [Vidéo]. Canal-U. (Consultée le 25 mai 2022)

Giussani, C., Roux, F-E., Lubrano, V., Gaini, S. M., Bello, L. (2007). Review of language organisation in bilingual patients: what can we learn from direct brain mapping?, Acta Neurochirurgica, 149 (11), 1109–1116.

Indefrey, P. (2006). A Meta-analysis of hemodynamic studies on first and second language processing: Which suggested differences can we trust and what do they mean? Language Learning, 56, 279–304.

Lucas, T. H., McKhann, G. M., Ojemann, G. A. (2004). Functional separation of languages in the bilingual brain: a comparison of electrical stimulation language mapping in 25 bilingual patients and 117 monolingual control patients. Journal of Neurosurgery, 101, 449–457.

Ojemann, G., Ojemann, J., Lettich, E., Berger, M. (1989). Cortical language localization in left, dominant hemisphere: an electrical stimulation mapping investigation in 117 patients. Journal of Neurosurgery, 71, 316–326

Paradis, M., Libben, G. (1987). The Bilingual Aphasia Test. Hillsdale, NJ: Lawrence Earlbaum Associates.

Sanai, N., Mizadeh, Z., & Berger, M. S. (2008). Functional outcome after language mapping for glioma resection. The New England Journal of Medecine, 358, 18–27.

Szekely, A., et al. (2005). Timed action and object naming. Cortex, 41 (1), 7–26.

> Voir aussi la bibliographie générale à télécharger dans l'onglet "Documents" de la séquence vidéo d'ouverture du colloque.

Dans la même collection

Sur le même thème