TABLE 4.

The computational efficiency results of different microstate detection methods with different topographical clustering strategies.

		First-step clustering	Second-step clustering	Total
Task-free	Case 1	224,896 s	32 s	224,928 s
	Case 2	191,200 s	33 s	191,233 s
	Case 3	604,160 s	3,412 s	607,572 s
	Case 4	211,560 s	32 s	211,592 s
Task-Guided	Case 5 (valence)	604,160 s	682 s (low valence)	605,476 s
			634 s (high valence)
	Case 5 (arousal)	604,160 s	679 s (low arousal)	605,531 s
			692 s (high arousal)

c, the number of clusters; I, the number of iteration. Here, c ranges from 2 to 8, and I is set to 1000.