Hierarchical clustering of brain activity during human nonrapid eye movement sleep
Proceedings of the National Academy of Sciences March 26, 2012 Melanie Boly, Vincent Perlbarg, Guillaume Marrelec et al. 201 citations
Consciousness is reduced during nonrapid eye movement (NREM) sleep due to changes in brain function that are still poorly understood. Here, we tested the hypothesis that impaired consciousness during NREM sleep is associated with an increased modularity of brain activity. Cerebral connectivity was quantified in resting-state functional magnetic resonance imaging times series acquired in 13...