1. Functional Neuroimaging Unit; Centre de recherche de l'institut gériatrique de l'université de Montréal; Québec Canada
2. Center of Advanced Research in Sleep Medicine; Hôpital du Sacré-Coeur de Montréal; Montréal Québec Canada
3. Centre de recherche en neuropsychologie et en cognition; Department of Psychology; University of Montreal; Montreal Québec Canada
4. McConnell Brain Imaging Centre; Montreal Neurological Institute; McGill University; Montreal Canada H3A2B4
5. Laboratory for Functional Brain Imaging and Learning Research; The Brain-Behavior Center; University of Haifa; Haifa Israel
6. Laboratory of Brain and Cognition; NIMH; NIH; Bethesda Maryland
7. Unité Mixte de Recherche-S 678; Institut National de la Santé et de la Recherche Médicale/University of Paris 6; Centre Hospitalier Universitaire Pitié-Salpêtrière; Paris France