Please use this identifier to cite or link to this item: http://hdl.handle.net/10668/1546
Título : Repeating with the right hemisphere: reduced interactions between phonological and lexical-semantic systems in crossed aphasia?
Autor : De-Torres, Irene
Dávila, Guadalupe
Berthier, Marcelo L.
Froudist Walsh, Seán
Moreno-Torres, Ignacio
Ruiz-Cruces, Rafael
Filiación: [De Torres,I; Dávila,G; Berthier,ML; Froudist Walsh,S; Ruiz Cruces,R] Unit of Cognitive Neurology and Aphasia, Centro de Investigaciones, Médico-Sanitarias, University of Málaga, Malaga, Spain. [De Torres,I] Unit of Physical Medicine and Rehabilitation, Carlos Haya University Hospital, Malaga, Spain. [Dávila, G] Psychobiology Area, Faculty of Psychology, University of Málaga, Malaga, Spain.[Froudist Walsh,S] Department of Psychosis Studies, Institute of Psychiatry, King's Health Partners, King's College London, UK. [Moreno Torres,I] Department of Spanish Language I, University of Málaga, Malaga, Spain.
Palabras clave : Right hemisphere
Languaje
Crossed Aphasia
Conduction Aphasia
Language network
Structural connectivity
Humanos
España
Memoria a corto plazo
Lenguaje
Afasia de conducción
Lóbulo temporal
Trastornos del lenguaje
MeSH: Medical Subject Headings::Geographicals::Geographic Locations::Europe::Spain
Medical Subject Headings::Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans
Medical Subject Headings::Psychiatry and Psychology::Psychological Phenomena and Processes::Mental Processes::Learning::Memory::Memory, Short-Term
Medical Subject Headings::Diseases::Nervous System Diseases::Neurologic Manifestations::Neurobehavioral Manifestations::Communication Disorders::Language Disorders::Speech Disorders::Aphasia::Aphasia, Conduction
Medical Subject Headings::Diseases::Nervous System Diseases::Neurologic Manifestations::Neurobehavioral Manifestations::Communication Disorders::Language Disorders
Medical Subject Headings::Anatomy::Nervous System::Central Nervous System::Brain
Medical Subject Headings::Anatomy::Nervous System::Central Nervous System::Brain::Prosencephalon::Telencephalon::Cerebrum::Cerebral Cortex::Temporal Lobe
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Neuroimaging::Diffusion Tensor Imaging
Fecha de publicación : 18-Oct-2013
Editorial : Frontiers Research Foundation
Cita Bibliográfica: De-Torres I, Dávila G, Berthier ML, Froudist Walsh S, Moreno-Torres I, Ruiz-Cruces R. Repeating with the right hemisphere: reduced interactions between phonological and lexical-semantic systems in crossed aphasia? Front Hum Neurosci. 2013; 7:675.
Abstract: Knowledge on the patterns of repetition amongst individuals who develop language deficits in association with right hemisphere lesions (crossed aphasia) is very limited. Available data indicate that repetition in some crossed aphasics experiencing phonological processing deficits is not heavily influenced by lexical-semantic variables (lexicality, imageability, and frequency) as is regularly reported in phonologically-impaired cases with left hemisphere damage. Moreover, in view of the fact that crossed aphasia is rare, information on the role of right cortical areas and white matter tracts underpinning language repetition deficits is scarce. In this study, repetition performance was assessed in two patients with crossed conduction aphasia and striatal/capsular vascular lesions encompassing the right arcuate fasciculus (AF) and inferior frontal-occipital fasciculus (IFOF), the temporal stem and the white matter underneath the supramarginal gyrus. Both patients showed lexicality effects repeating better words than non-words, but manipulation of other lexical-semantic variables exerted less influence on repetition performance. Imageability and frequency effects, production of meaning-based paraphrases during sentence repetition, or better performance on repeating novel sentences than overlearned clichés were hardly ever observed in these two patients. In one patient, diffusion tensor imaging disclosed damage to the right long direct segment of the AF and IFOF with relative sparing of the anterior indirect and posterior segments of the AF, together with fully developed left perisylvian white matter pathways. These findings suggest that striatal/capsular lesions extending into the right AF and IFOF in some individuals with right hemisphere language dominance are associated with atypical repetition patterns which might reflect reduced interactions between phonological and lexical-semantic processes.
Descripción : Journal Article;
URI: http://hdl.handle.net/10668/1546
Versión del editor : http://www.frontiersin.org/Journal/10.3389/fnhum.2013.00675/abstract
DOI: 10.3389/fnhum.2013.00675
ISSN : 1662-5161 (Online)
Appears in Collections:01- Artículos - Hospital Regional de Málaga

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