Article (Scientific journals)
Homeostatic sleep pressure and responses to sustained attention in the suprachiasmatic area.
Schmidt, Christina; Collette, Fabienne; Leclercq, Yves et al.
2009In Science, 324 (5926), p. 516-9
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Keywords :
Attention/physiology; Brain Mapping; Circadian Rhythm; Cognition/physiology; Female; Homeostasis/physiology; Humans; Magnetic Resonance Imaging; Male; Melatonin/metabolism; Polysomnography; Psychomotor Performance; Sleep/physiology; Suprachiasmatic Nucleus/physiology; Thalamus/physiology; Wakefulness; Young Adult
Abstract :
[en] Throughout the day, cognitive performance is under the combined influence of circadian processes and homeostatic sleep pressure. Some people perform best in the morning, whereas others are more alert in the evening. These chronotypes provide a unique way to study the effects of sleep-wake regulation on the cerebral mechanisms supporting cognition. Using functional magnetic resonance imaging in extreme chronotypes, we found that maintaining attention in the evening was associated with higher activity in evening than morning chronotypes in a region of the locus coeruleus and in a suprachiasmatic area (SCA) including the circadian master clock. Activity in the SCA decreased with increasing homeostatic sleep pressure. This result shows the direct influence of the homeostatic and circadian interaction on the neural activity underpinning human behavior.
Disciplines :
Neurosciences & behavior
Author, co-author :
Schmidt, Christina  ;  Université de Liège - ULiège > Centre de Recherches du Cyclotron - Département des sciences cognitives > Neuropsychologie
Collette, Fabienne  ;  Université de Liège - ULiège > Centre de Recherches du Cyclotron - Département des sciences cognitives > Neuropsychologie - Département des sciences cognitives
Leclercq, Yves ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Sterpenich, Virginie ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Vandewalle, Gilles  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Berthomier, Pierre
Berthomier, Christian
Phillips, Christophe  ;  Université de Liège - ULiège > Centre de recherches du cyclotron - Dép. d'électric., électron. et informat. (Inst.Montefiore)
Tinguely, Gilberte
Darsaud, Annabelle
Gais, Steffen
Schabus, Manuel
Desseilles, Martin ;  Université de Liège - ULiège > Département des sciences cliniques > Psychiatrie et psychologie médicale
Salmon, Eric  ;  Centre Hospitalier Universitaire de Liège - CHU > Centre de Recherches du Cyclotron > Neurologie Sart Tilman
Balteau, Evelyne ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Degueldre, Christian ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Luxen, André ;  Université de Liège - ULiège > Centre de Recherches du Cyclotron - Département de chimie (sciences) > Chimie organique de synthèse - Centre de recherches du cyclotron
Maquet, Pierre  ;  Université de Liège - ULiège > Centre de recherches du cyclotron - Département des sciences cliniques
Cajochen, Christian
More authors (11 more) Less
Language :
English
Title :
Homeostatic sleep pressure and responses to sustained attention in the suprachiasmatic area.
Publication date :
2009
Journal title :
Science
ISSN :
0036-8075
eISSN :
1095-9203
Publisher :
American Association for the Advancement of Science, Washington, United States - District of Columbia
Volume :
324
Issue :
5926
Pages :
516-9
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
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