1 Institut de Neurosciences Cognitives et Intégratives d'Aquitaine-UMR 5287 CNRS, Team Neuroimaging and Human Cognition, Université de Bordeaux, Zone Nord Bat 2, 2ème étage, 146 Rue Léo Saignat, CEDEX, 33076 Bordeaux, France.
2 Northumbria Sleep Research, Faculty of Health and Life Sciences, Northumbria University, 134 Northumberland Building, Newcastle upon Tyne NE1 8ST, UK.