Table 2.

Exploratory tDCS effects on RSNs: significant clusters for the contrast (real tDCS > baseline1) > (sham > baseline 2) and (real tDCS > baseline1) < (sham > baseline2) for each of the four networks

Contrast/network	Cluster	Brain area	Brodmann's area	Number of voxels	MNI coordinates
					x	y	z
(Real tDCS > baseline 1) > (sham tDCS > baseline2)
RSNc1/default mode	1	R inferior parietal lobule	40	277	64	−28	44
	1	Postcentral gyrus	3
	x	R middle frontal gyrus	11	84	28	26	−24
	2	R anterior cingulate	32	77	4	48	−12
	3	L superior frontal gyrus	8	61	−32	26	48
	4	R superior frontal gyrus	8	54	6	50	42
	5	L precuneus/L posterior	7/31	52	−2	−60	38
	6	R middle frontal gyrus	8	41	50	14	42
	7	L middle frontal gyrus	8	40	−48	20	40
	8	L superior frontal gyrus	9	33	−18	52	28
	9	R superior frontal gyrus	8	27	26	40	46
	10	R superior frontal gyrus	8	25	38	32	48
(Real tDCS > baseline1) < (sham tDCS > baseline2)	11	Posterior cingulate	23	114	0	−54	20
	x	L superior temporal gyrus	21	105	−40	−6	−36
	12	L superior frontal gyrus	6	85	−24	26	58
	13	R superior frontal gyrus	6	68	20	20	54
	14	L middle frontal gyrus	6	52	−34	10	60
	15	Brainstem		38	0	−20	−14
RSNc2/left frontal-parietal	1	L inferior frontal gyrus	46/10	206	−42	48	0
	2	L parahippocampal gyrus	30	163	−12	−40	−2
	3	L posterior cingulate	29	162	−12	−44	10
	4	L brainstem		159	−2	−12	−12
	x	R posterior cingulate gyrus	31	158	6	−30	38
	5	R middle frontal gyrus	10	52	40	42	4
	6	R middle frontal gyrus	8	37	38	44	36
	7	L inferior frontal gyrus	44	32	−50	18	10
	8	R inferior parietal lobule	40	31	54	−54	48
	9	R precentral gyrus	44	24	56	16	4
RSNc3/right frontal-parietal	1	R middle frontal gyrusa	8/9	444	38	44	36
	2	L middle frontal gyrus	9	327	−44	38	34
	3	R superior parietal lobule	7	191	44	−60	58
	4	R precentral gyrus	44	184	56	12	4
	5	R middle frontal gyrus	10	96	42	44	8
	6	R middle frontal gyrus	9/10	75	38	48	24
	7	R superior frontal gyrusa	10	57	16	68	8
	8	R inferior frontal gyrus	11	53	28	26	−24
	9	R superior frontal gyrus	9	27	26	60	26
RSNc4/self-referential	1	L hippocampus/L parahippocampal gyrus	19	228	−30	−48	−4
	2	R hippocampus/R parahippocampal gyrus	19	218	36	−42	−4
	3	L cerebellum culmen		217	−12	−32	−20
	4	L uncus	28	186	−28	4	−28
	5	L brainstem/thalamus		117	−2	−6	−4
	6	L superior temporal gyrus		28	−40	14	−22

Resting-state network contrast (RSNc) 1 corresponds to the contrast on the DMN, RSNc 2 to the contrast on the left FPN and RSNc 3 to the contrast on the right FPN, RSNc 4 corresponds to the contrast of the self referential network. Results are based on a whole brain dual regression approach and presented uncorrected with a p < 0.001 (cluster size >20 voxels). Numbers correspond to clusters in Figure 5. x = Clusters are not shown in Figure 5.

^aConnected within one cluster.