Table 3.

A correlation analysis revealed a correlation between monthly frequencies of attacks with periaqueductal gray connectivity strength during painful stimulation.

			COG MNI coordinates
Brain region	Side	Z-stat	X	Y	Z	Vol (voxels)
Frequently correlation
Positive correlation
WM (cluster including orbitofrontal cortex and caudate)	L	2.62	−24	34	−6	2,894
Sup. occipital	R	2.58	24	−70	30	2,258
SMA	R	2.83	4	−18	70	1,847
Cerebellum 9	R	2.56	8	−48	−58	941
Inf. frontal	R	2.43	36	18	34	861
Precentral/postcentral (face area)	L	2.27	−56	−8	32	683
Cerebellum crus 1	R	2.42	46	−62	−40	578
Inf. Temporal gyrus	R	1.97	52	0	−40	284
Negative correlation
Putamen	L	2.5	−22	4	6	871
Sup. frontal	R	2.58	20	48	40	334
Sup. parietal	R	2.33	26	−62	60	273
Precuneus	L	2.07	−8	−68	58	221
Cerebellum VI	R	2.09	18	−68	−28	178
Cerebellum VIII	R	2.1	28	−42	−52	159
Sup. temporal lobe	L	2.42	−48	−20	12	154
SMA	R	2.51	4	8	68	150
Mid. occipital	R	2.12	32	−94	2	146
Mid. cingulum	L	2.23	45	77	52	141
Precentral	L	2.2	−26	−14	56	118
Sup. occipital	R	2.55	28	−92	22	107
Cerebellum 9	L	2.28	−22	−42	−48	99
Precentral	L	2.38	−38	2	60	83
Inf. frontal tri	L	2.07	−54	32	14	80
Mid. frontal	L	2.5	−40	44	30	76
Cerebellum IV/V	R	2.17	18	−52	−20	71
Paracentral lobule	L	1.85	−14	−36	74	60
Precentral	R	2.1	30	−26	72	60
Insula	L	2.15	−38	−4	16	60
SMA	L	2.02	2	4	40	58
Cerebellum VIII	L	1.73	−44	−48	−50	55
Cerebellum crus 2	L	2.08	−26	−78	−46	54
Temporal pole	L	2.24	70	74	29	52
Precentral	L	1.99	−32	−30	40	51
ACC	R	2.37	4	34	10	50
Vermis 4/5		1.99	2	−50	-22	47
Caudate	R	2.2	6	12	6	41
SMA	L	2.2	−2	12	48	34
Mid. frontal	R	2.18	30	30	28	34
Precentral	R	1.94	48	6	28	30
Sup. frontal	L	2.36	−26	46	40	29
Lingual gyrus	R	2.06	18	−100	−8	28

ACC, anterior cingulate cortex; COG, center of gravity; Inf, inferior; Mid, middle; MNI, Montreal Neurological Institute coordinates; SMA, supplementary motor area; Sup, superior; Vol, volume; WM, white matter.