Sleep and Dreaming Are for Important Matters
REVIEW ARTICLE published: 25 July 2013 doi: 10.3389/fpsyg.2013.00474 Sleep and dreaming are for important matters L. Perogamvros 1,2,3* , T. T. Da n g - Vu 4, M. Desseilles 5,6 and S. Schwartz 2,3 1 Sleep Laboratory, Division of Neuropsychiatry, Department of Psychiatry, University Hospitals of Geneva, Geneva, Switzerland 2 Department of Neuroscience, University of Geneva, Geneva, Switzerland 3 Swiss Center for Affective Sciences, University of Geneva, Geneva, Switzerland 4 Department of Exercise Science, Center for Studies in Behavioral Neurobiology, Concordia University, Montreal, QC, Canada 5 Department of Psychology, University of Namur Medical School, Namur, Belgium 6 Alexian Brother Psychiatry Clinic, Henri-Chapelle, Belgium Edited by: Recent studies in sleep and dreaming have described an activation of emotional and Jennifer M. Windt, Johannes reward systems, as well as the processing of internal information during these states. Gutenberg-University of Mainz, Specifically, increased activity in the amygdala and across mesolimbic dopaminergic Germany regions during REM sleep is likely to promote the consolidation of memory traces Reviewed by: Erin J. Wamsley, Harvard Medical with high emotional/motivational value. Moreover, coordinated hippocampal-striatal replay School, USA during NREM sleep may contribute to the selective strengthening of memories Edward F. Pace-Schott, Harvard for important events. In this review, we suggest that, via the activation of Medical School, USA emotional/motivational circuits, sleep and dreaming may offer a neurobehavioral substrate *Correspondence: for the offline reprocessing of emotions, associative learning, and exploratory behaviors, L. Perogamvros, Sleep Laboratory, Division of Neuropsychiatry, resulting in improved memory organization, waking emotion regulation, social skills, Department of Psychiatry, University and creativity.
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