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Titolo:
Laterally directed arm movements and right unilateral neglect after left hemisphere damage
Autore:
Bartolomeo, P; Chokron, S; Gainotti, G;
Indirizzi:
INSERM, Ctr Paul Broca, Unit 324, F-75014 Paris, France INSERM Paris France F-75014 Paul Broca, Unit 324, F-75014 Paris, France Hop Henri Mondor, Dept Neurosci, F-94010 Creteil, France Hop Henri MondorCreteil France F-94010 eurosci, F-94010 Creteil, France CNRS, UMR 5105, Grenoble, France CNRS Grenoble FranceCNRS, UMR 5105, Grenoble, France Fdn Ophthalmol Rothschild, Paris, France Fdn Ophthalmol Rothschild ParisFrance halmol Rothschild, Paris, France Univ Sacred Heart, Inst Neurol, I-00168 Rome, Italy Univ Sacred Heart Rome Italy I-00168 t, Inst Neurol, I-00168 Rome, Italy
Titolo Testata:
NEUROPSYCHOLOGIA
fascicolo: 10, volume: 39, anno: 2001,
pagine: 1013 - 1021
SICI:
0028-3932(2001)39:10<1013:LDAMAR>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIRECTIONAL HYPOKINESIA; EGOCENTRIC REFERENCE; SPATIAL NEGLECT; HEMISPATIAL NEGLECT; LESIONS; ATTENTION; HEMINEGLECT; IMPAIRMENTS; BRADYKINESIA; MECHANISMS;
Keywords:
unilateral neglect; directional hypokinesia; reaction time; brain damage;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Bartolomeo, P INSERM, Ctr Paul Broca, Unit 324, 2ter Rue Alesia, F-75014 Paris, France INSERM 2ter Rue Alesia Paris France F-75014 4 Paris, France
Citazione:
P. Bartolomeo et al., "Laterally directed arm movements and right unilateral neglect after left hemisphere damage", NEUROPSYCHO, 39(10), 2001, pp. 1013-1021

Abstract

Signs of unilateral neglect for events occurring in one hemispace most often result from right hemisphere lesions. Right unilateral neglect after left hemisphere damage is much rarer, and has received less attention. The present study explores the relationships between right unilateral neglect and asymmetries in producing laterally directed arm movements in the horizontalplane in left brain-damaged (LBD) patients. Participants produced right- or left-directed arm movements with their left arm in response to centrally located visual stimuli. Results showed that LBD patients with signs of right unilateral neglect were consistently slowed when producing arm movements toward the right (neglected) side, as compared to left-directed movements. Taking into account patients with and without signs of neglect, this directional asymmetry positively correlated with a reaction-time measure of perceptual spatial bias. These findings stand in contrast with previous results obtained with the same experimental paradigm in right brain-damaged patients, in whom a consistent slowing of leftward-directed movements was rare andapparently unrelated to the presence and severity of left neglect. These conflicting results are discussed with respect to the hypothesis that different mechanisms may underlie left and right unilateral neglect. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 23:26:08