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Titolo:
Language and spatial attention can lateralize to the same hemisphere in healthy humans
Autore:
Floel, A; Knecht, S; Lohmann, H; Deppe, M; Sommer, J; Drager, B; Ringelstein, EB; Henningsen, H;
Indirizzi:
Univ Munster, Dept Neurol, D-48129 Munster, Germany Univ Munster MunsterGermany D-48129 pt Neurol, D-48129 Munster, Germany
Titolo Testata:
NEUROLOGY
fascicolo: 6, volume: 57, anno: 2001,
pagine: 1018 - 1024
SICI:
0028-3878(20010925)57:6<1018:LASACL>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSCRANIAL DOPPLER SONOGRAPHY; POSITRON EMISSION TOMOGRAPHY; CEREBRAL BLOOD-FLOW; CROSSED APHASIA; NEGLECT; ORGANIZATION; LOCALIZATION; DOMINANCE; SYSTEM; HYPOTHESIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Floel, A Univ Munster, Dept Neurol, Albert Schweitzer Str 33, D-48129 Munster, Germany Univ Munster Albert Schweitzer Str 33 Munster Germany D-48129ny
Citazione:
A. Floel et al., "Language and spatial attention can lateralize to the same hemisphere in healthy humans", NEUROLOGY, 57(6), 2001, pp. 1018-1024

Abstract

Background: Disorders of language classically occur after left brain lesions, and disorders of spatial attention after right brain lesions. It is unclear whether the hemispheric dissociation of functions is a fixed pattern of brain organization. Objective: The authors determined whether lateralization of language and lateralization of spatial attention also dissociate in people with atypical (i.e., right hemispheric) language dominance. Methods:The authors selected 10 subjects with typical, i.e., left hemispheric, and10 with atypical, i.e., right hemispheric, language representation on a random basis from a sample of 326 healthy volunteers examined with functionaltranscranial Doppler sonography, (fTCD) for language dominance. In these subjects, hemispheric lateralization of cerebral perfusion during a line bisection task was determined with fTCD. Results: The authors found a dissociation between dominance for language and spatial attention in all but four subjects. In the latter subjects, there was a significant lateralization to the right hemisphere for both tasks. The four subjects showed normal intellectual, linguistic, and spatial performance, with normal EEG and MRI scans of the brain. Conclusion: Even in the absence of brain pathology, the same hemisphere can be dominant in control of both language and spatial attention.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/21 alle ore 04:32:38