Giovanni Fazio, Daniele Olivo, Nadine D Wolf, Dusan Hirjak, Mike M Schmitgen, Florian Werler, Miriam Witteman, Katharina M Kubera, Vince D Calhoun, Wolfgang Reith, Robert Christian Wolf, Fabio Sambataro
The brain mechanisms underlying the risk of cannabis use disorder (CUD) are poorly understood. Several studies have reported changes in functional connectivity (FC) in CUD, although none have focused on the study of time-varying patterns of FC. To fill this important gap of knowledge, 39 individuals at risk for CUD and 55 controls, stratified by their score on a self-screening questionnaire for cannabis-related problems (CUDIT-R), underwent resting-state functional magnetic resonance imaging. Dynamic functional connectivity (dFNC) was estimated using independent component analysis, sliding-time window correlations, cluster states and meta-state indices of global dynamics and were compared among groups...
May 2024: Addiction Biology