Table 2.

Regions of reduced grey matter volume in primary TN patients compared to healthy controls.

Anatomical regions	Side	Brodmann’s area	Voxels in cluster	MNI coordinates			Peak voxel t-value
				x	y	z
Insula	L	13	248	−38	17	1	5.60
Hippocampus	R	36	361	30	−31	−6	5.14
Somatosensory cortex 2	L	40	139	−38	−12	19	4.18
Anterior cingulate cortex	R	24	112	10	16	32	4.25
Inferior temporal gyrus	R	20	215	52	−33	−27	4.03
Middle temporal gyrus	L	21	439	−57	3	−21	4.68
Temporal pole	L	38	205	−39	−4	−42	3.93
Temporal pole	R	38	171	38	0	46	4.41
Precuneus lobe	L	7	256	−15	−68	34	3.74
Precuneus lobe	R	7	175	16	−56	28	4.36

Data are corrected for multiple comparisons using FDR with threshold at p < 0.05.