FIG. 4.

Functional relevance of the two main states. The two brain states observed at the group level (Fig. 2B) are correlated with each subject's rest and task data (separately for each time point). No discernable temporal organization of State A and State B is observed in resting-state data across all 100 subjects (A). Evidence of State A during rest may suggest subjects are performing covert tasks during rest. Clear structure is seen when correlated with activity during the reasoning task (B). All subjects consistently enter State A when entering task blocks (in red), and enter State B when entering intertask rest periods (in blue). Color images available online at www.liebertpub.com/brain