TABLE 5.

Differences of regional homogeneity (ReHo) values in three frequency bands among the groups.

Contrast	Brain regions	BA	Volume (mm3)	MNI coordinates			t-value
				X	Y	Z
1. Conventional frequency band
PD-A vs. HCs	PD-A < HCs
	left Cerebelum_Crus2		27162	0	−81	−18	−5.4
	PD-A > HCs
	right cuneus	18	7533	6	−81	33	4.3
PD-A vs. PD-NA	NA
PD-NA vs. HC	PD-NA < HCs
	left Cerebelum_Crus2		23031	−9	−78	−42	−5.6
2. Slow-4 band
	PD-A < HCs
	left Cerebelum_Crus2		36126	−12	−81	−39	−5.8
	PD-A > HCs
	right cuneus	18	7668	6	−81	33	4.5
PD-A vs. PD-NA	NA
PD-NA vs. HCs	PD-NA < HCs
	left Cerebelum_Crus2		22464	−12	−81	−39	−5.5
3. Slow-5 band
PD-A vs. HCs	PD-A < HCs
	left Cerebelum_7b		5940	−6	−78	−42	−4.6
PD-A vs. PD-NA	NA
PD-NA vs. HCs	PD-NA < HCs
	right Cerebelum_8		8856	18	−75	−48	−4.9

BA, Brodmann’s area; MNI, Montreal Neurological Institute; PD-A, Parkinson’s disease with apathy; PD-NA, Parkinson’s disease without apathy; HCs, healthy controls; NA, Not applicable; - no significant clusters detected.