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Titolo:
Experience-dependent changes in cerebral functional connectivity during human rapid eye movement sleep
Autore:
Laureys, S; Peigneux, P; Phillips, C; Fuchs, S; Degueldre, C; Aerts, J; Del Fiore, G; Petiau, C; Luxen, A; Van dr Linden, M; Cleeremans, A; Smith, C; Maquet, P;
Indirizzi:
Univ Liege, Cyclotron Res Ctr, B-4000 Liege, Belgium Univ Liege Liege Belgium B-4000 Cyclotron Res Ctr, B-4000 Liege, Belgium CHU Sart Tilman, Dept Neurol, B-4000 Liege, Belgium CHU Sart Tilman Liege Belgium B-4000 Dept Neurol, B-4000 Liege, Belgium Univ Liege, Dept Neuropsychol, Liege, Belgium Univ Liege Liege BelgiumUniv Liege, Dept Neuropsychol, Liege, Belgium Free Univ Brussels, Cognit Sci Res Unit, Brussels, Belgium Free Univ Brussels Brussels Belgium nit Sci Res Unit, Brussels, Belgium Trent Univ, Dept Psychol, Peterborough, PQ, Canada Trent Univ Peterborough PQ Canada Dept Psychol, Peterborough, PQ, Canada Univ Coll London, Wellcome Dept Cognit Neurol, London, England Univ Coll London London England ome Dept Cognit Neurol, London, England
Titolo Testata:
NEUROSCIENCE
fascicolo: 3, volume: 105, anno: 2001,
pagine: 521 - 525
SICI:
0306-4522(2001)105:3<521:ECICFC>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUPPLEMENTARY MOTOR AREA; PREMOTOR CORTEX; MACAQUE MONKEY; PARIETAL CORTEX; BASAL GANGLIA; PROJECTIONS; DORSAL; MEMORY; LOBE; PET;
Keywords:
memory; brain plasticity; psychophysiological interaction analysis; functional neuroimaging; positron emission tomography;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Maquet, P Univ Liege, Cyclotron Res Ctr, Sart Tilman B30, B-4000 Liege, Belgium Univ Liege Sart Tilman B30 Liege Belgium B-4000 Liege, Belgium
Citazione:
S. Laureys et al., "Experience-dependent changes in cerebral functional connectivity during human rapid eye movement sleep", NEUROSCIENC, 105(3), 2001, pp. 521-525

Abstract

One function of sleep is hypothesized to be the reprocessing and consolidation of memory traces (Smith, 1995; Gais et al., 2000; McGaugh, 2000; Stickgold et al., 2000). At the cellular level, neuronal reactivations during post-training sleep in animals have been observed in hippocampal (Wilson and McNaughton, 1994) and cortical (Amzica et al., 1997) neuronal populations. At the systems level, using positron emission tomography, we have recently shown that some brain areas reactivated during rapid-eye-movement sleep in human subjects previously trained on an implicit learning task (a serial reaction time task) (Maquet et al., 2000). These cortical reactivations, located in the left premotor area and bilateral cuneus, were thought to reflectthe reprocessing - possibly the consolidation - of memory traces during post-training rapid-eye-movement sleep. Here, the experience-dependent functional connectivity of these brain regions is examined. It is shown that the left premotor cortex is functionally more correlated with the left posterior parietal cortex and bilateral pre-supplementary motor area during rapid-eye-movement sleep of subjects previously trained to the reaction time task compared to rapid-eye-movement sleep of untrained subjects. The increase infunctional connectivity during post-training rapid-eye-movement sleep suggests that the brain areas reactivated during post-training rapid-eye-movement sleep participate in the optimization of the network that subtends subject's visuo-motor response. The optimization of this visuo-motor network during sleep could explain the gain in performance observed during the following day. (C) 2001 IBRO. Published by Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/20 alle ore 03:28:27