Reference : Neural precursors of delayed insight
Scientific journals : Article
Social & behavioral sciences, psychology : Neurosciences & behavior
Human health sciences : Radiology, nuclear medicine & imaging
http://hdl.handle.net/2268/86820
Neural precursors of delayed insight
English
Darsaud, Annabelle [> >]
Wagner, Ullrich [> >]
Balteau, Evelyne mailto [Université de Liège - ULg > > Centre de recherches du cyclotron >]
Desseilles, Martin mailto [Université de Liège - ULg > Département des sciences cliniques > Psychiatrie et psychologie médicale >]
Sterpenich, Virginie [Université de Liège - ULg > > Centre de recherches du cyclotron >]
Vandewalle, Gilles mailto [Université de Liège - ULg > > Centre de recherches du cyclotron >]
Albouy, Geneviève [Université de Liège - ULg > > Centre de recherches du cyclotron >]
Dang Vu, Thien Thanh [Université de Liège - ULg > Département des sciences cliniques > Neurologie >]
Collette, Fabienne mailto [Université de Liège - ULg > Département de Psychologie : cognition et comportement > Neuropsychologie >]
Boly, Mélanie mailto [Université de Liège - ULg > Département des sciences cliniques > Neurologie >]
Schabus, Manuel [> >]
Degueldre, Christian 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 >]
Maquet, Pierre mailto [Université de Liège - ULg > > Centre de recherches du cyclotron >]
2011
Journal of Cognitive Neuroscience
MIT Press
23
8
1900-1910
Yes (verified by ORBi)
International
0898-929X
1530-8898
Cambridge
United Kingdom
[en] insight ; sleep ; fMRI
[en] The solution of a problem left unresolved in the evening can sometimes pop into mind as a sudden insight after a night of sleep in the following morning. Although favorable effects of sleep on insightful behavior have been experimentally confirmed, the neural mechanisms determining this delayed insight remain unknown. Here, using functional magnetic resonance imaging (fMRI), we characterize the neural precursors of delayed insight in the number reduction task (NRT), in which a hidden task structure can be learned implicitly, but can also be recognized explicitly in an insightful process, allowing immediate qualitative improvement in task performance. Normal volunteers practiced the NRT during two fMRI sessions (training and retest), taking place 12 hours apart after a night of sleep. After this delay, half of the subjects gained insight into the hidden task structure ("solvers," S), whereas the other half did not ("nonsolvers," NS). Already at training, solvers and nonsolvers differed in their cerebral responses associated with implicit learning. In future solvers, responses were observed in the superior frontal sulcus, posterior parietal cortex, and the insula, three areas mediating controlled processes and supporting early learning and novice performance. In contrast, implicit learning was related to significant responses in the hippocampus in nonsolvers. Moreover, the hippocampus was functionally coupled with the basal ganglia in nonsolvers and with the superior frontal sulcus in solvers, thus potentially biasing participants' strategy towards implicit or controlled processes of memory encoding, respectively. Furthermore, in solvers but not in nonsolvers, response patterns were further transformed overnight, with enhanced responses in ventral medial prefrontal cortex, an area previously implicated in the consolidation of declarative memory. During retest in solvers, before they gain insight into the hidden rule, significant responses were observed in the same medial prefrontal area. After insight, a distributed set of parietal and frontal areas is recruited among which information concerning the hidden rule can be shared in a so-called global workspace.
Centre de Recherches du Cyclotron - CRC
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Queen Elisabeth Medical Foundation ; Research Fund of the University of Liège ; Interuniversity Attraction Poles Programme – Belgian State – Belgian Science Policy
http://hdl.handle.net/2268/86820
also: http://hdl.handle.net/2268/98600
10.1162/jocn.2010.21550

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
Darsaud JOCN 2011.pdfPublisher postprint1.12 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.