Reference : Circadian preference modulates the neural substrate of conflict processing across the day
Scientific journals : Article
Social & behavioral sciences, psychology : Neurosciences & behavior
http://hdl.handle.net/2268/108976
Circadian preference modulates the neural substrate of conflict processing across the day
English
Schmidt, Christina mailto [> >]
Peigneux, Philippe mailto [Université de Liège - ULg > > Centre de recherches du cyclotron >]
Leclercq, Yves [> >]
Sterpenich, Virginie [> >]
Vandewalle, Gilles mailto [Université de Liège - ULg > > Centre de recherches du cyclotron >]
Phillips, Christophe mailto [Université de Liège - ULg > > Centre de recherches du cyclotron >]
Berthomier, Pierre [> >]
Berthomier, Christian [> >]
Tinguely, Gilberte [> >]
Gais, Steffen [> >]
Schabus, Manuel [> >]
Desseilles, Martin [> >]
Dang Vu, Thien Thanh [Université de Liège - ULg > Département des sciences cliniques > Neurologie >]
Salmon, Eric mailto [Université de Liège - ULg > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et révalid. cogn. >]
Degueldre, Christian mailto [Université de Liège - ULg > > Centre de recherches du cyclotron >]
Balteau, Evelyne mailto [Université de Liège - ULg > > Centre de recherches du cyclotron >]
Luxen, André mailto [Université de Liège - ULg > Département de chimie (sciences) > Chimie organique de synthèse >]
Cajochen, Christian [> >]
Maquet, Pierre mailto [Université de Liège - ULg > > Centre de recherches du cyclotron >]
Collette, Fabienne mailto [Université de Liège - ULg > Département de Psychologie : cognition et comportement > Neuropsychologie >]
2012
PLoS ONE
Public Library of Science
7
1
e29658
Yes (verified by ORBi)
International
1932-6203
San Franscisco
CA
[en] ciracadian ; inhibition
[en] Human morning and evening chronotypes differ in their preferred timing for sleep and wakefulness, as well as in optimal daytime periods to cope with cognitive challenges. Recent evidence suggests that these preferences are not a simple by-product of socio-professional timing constraints, but can be driven by inter-individual differences in the expression of circadian and homeostatic sleep-wake promoting signals. Chronotypes thus constitute a unique tool to access the interplay between those processes under normally entrained day-night conditions, and to investigate how they impinge onto higher cognitive control processes. Using functional magnetic resonance imaging (fMRI), we assessed the influence of chronotype and time-of-day on conflict processing-related cerebral activity throughout a normal waking day. Sixteen morning and 15 evening types were recorded at two individually adapted time points (1.5 versus 10.5 hours spent awake) while performing the Stroop paradigm. Results show that interference-related hemodynamic responses are maintained or even increased in evening types from the subjective morning to the subjective evening in a set of brain areas playing a pivotal role in successful inhibitory functioning, whereas they decreased in morning types under the same conditions. Furthermore, during the evening hours, activity in a posterior hypothalamic region putatively involved in sleep-wake regulation correlated in a chronotype-specific manner with slow wave activity at the beginning of the night, an index of accumulated homeostatic sleep pressure. These results shed light into the cerebral mechanisms underlying inter-individual differences of higher-order cognitive state maintenance under normally entrained day-night conditions.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers
http://hdl.handle.net/2268/108976

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