Arrêt de service programmé du vendredi 10 juin 16h jusqu’au lundi 13 juin 9h. Pour en savoir plus
Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Apraxia: a gestural or a cognitive disorder?

Abstract :

François Osiurak1,2 and Didier Le Gall31 Laboratoire d’Etude des Mécanismes Cognitifs (EA 3082), Université de Lyon, France2 Institut Universitaire de France, Paris, France3 Laboratoire de Psychologie des Pays de la Loire (EA 4638), Université d’Angers, FranceCorrespondence to: François Osiurak, Laboratoire d’Etude des Mécanismes Cognitifs (EA 3082), Institut de Psychologie, 5, avenue Pierre Mendès-France, 69676 Bron Cedex, France E-mail: Francois.Osiurak{at}univ-lyon2.frSir,We read with great interest the article by Buxbaum et al. (2014) about the critical brain regions for tool-related and imitative actions. The authors performed voxel-based lesion–symptom mapping with data from 71 left brain-damaged patients. Three types of actions were examined: (i) pantomime to sight of tools (GestTool); (ii) pantomime on imitation (ImTool); and (iii) imitation of meaningless gestures (ImNov). Impairments in all three of the gesture tasks were associated with lesions in left middle and inferior temporal and inferior parietal regions. Moreover, tool-related actions (both GestTool and ImTool) were dependent on left middle and inferior temporal lobe, whereas imitation of meaningless gestures (ImNov) was dependent on left inferior parietal regions. From these findings, the authors drew two conclusions. First, the left inferior parietal lobe might be the basis for the kinematic component of the praxis system, useful for planning movement trajectories in terms of extent, direction and timing. Second, middle and inferior temporal regions might support representational components of the praxis system (e.g. the arm and hand posture associated with the use of a hammer). Note that these conclusions lead to a profound revision of Buxbaum’s initial (2001) model. In this model, the left inferior parietal lobe was viewed …

Type de document :
Article dans une revue
Liste complète des métadonnées

https://hal.univ-angers.fr/hal-03355793
Contributeur : Okina Univ Angers Connectez-vous pour contacter le contributeur
Soumis le : lundi 27 septembre 2021 - 15:22:52
Dernière modification le : mercredi 27 avril 2022 - 03:59:13

Lien texte intégral

Identifiants

Collections

Citation

François Osiurak, Didier Le Gall. Apraxia: a gestural or a cognitive disorder?. Brain - A Journal of Neurology , Oxford University Press (OUP), 2014, pp.e333. ⟨10.1093/brain/awu238⟩. ⟨hal-03355793⟩

Partager

Métriques

Consultations de la notice

3