Fig. 1From: Association between insomnia and cognitive performance, gray matter volume, and white matter microstructure in cognitively unimpaired adultsParticipants’ selection flow-chart. aThis sample was used for analyses assessing associations between the presence of insomnia and performance in neuropsychological tests (NPS). bThis sample was used for analyses assessing associations between the presence of insomnia and gray matter volume. cThis sample was used for analyses assessing associations between the presence of insomnia and white matter diffusion imaging parametersBack to article page