TABLE 6.

Differences of degree centrality (DC) 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
	right hippocampus	20	5427	33	−9	−18	4.3
PD-A vs. PD-NA	NA
PD-NA vs. HCs	NA
2. Slow-4 band
PD-A vs. HCs	PD-A < HCs
	left Cerebelum_7b		36018	−15	−78	−45	−4.9
	PD-A > HCs
	right parahippocampus	30	5724	27	−24	−24	4.3
PD-A vs. PD-NA	NA
PD-NA vs. HCs	PD-NA < HCs
	left pallidum		7452	−12	9	−3	−4.3
3. Slow-5 band
PD-A vs. HCs	PD-A < HCs
	left Cerebelum_Crus2		2997	0	−84	−15	−4.6
PD-A vs. PD-NA	NA
PD-NA vs. HCs	NA

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.