Table 3.

Brain regions with abnormal ALFF value in ID patients compared with HCs

Comparison	Brain area	Cluster size	MNI coordinates			t value	p value
			x	y	z
ID patients > HC	Insula _ L	89	-33	9	-18	3.80	0.036
	Amygdala _ R	70	24	-3	-24	3.47	0.039
ID patients < HC	SPL _ R	126	12	-54	66	3.64	0.005

Notes: Using two-sample t test, p < 0.05 (cluster-level FDR corrected) represents statistical significance. ID, insomnia disorder; HCs, healthy controls; SPL, superior parietal lobule; L, left; R, right