Table S1.

Distribution of high- and low-arousal DCSs across subjects in the task-free condition

k	High-arousal state			Low-arousal state
	Mean	SD	No. of subjects	Mean	SD	No. of subjects
3	71	66	16	160	57	18
5	60	61	14	60	45	17
7	33	41	11	33	43	12
9	29	39	10	30	37	14

Presented are the mean and SD of the number of times (of 312 windows) that each identified high- and low-arousal DCS occurred during the 12-min task-free condition across individuals. The number of subjects (of 18 subjects) entering specific high- and low-arousal states are also indicated.