Table 2.

Brain regions showing significant gray matter volume difference between trigeminal neuralgia (TN) patients and matched healthy controls.

	Cluster size	Peak MNI coordinate			Peak
Brain regions	(voxels)	x	y	z	T-value
Right insula	183	6	0	18	−3.46
Left amygdala	172	−19	3	−21	−4.04
Right amygdala	141	18	4.5	−22	−4.68
Periaqueductal gray	104	1.5	−24	−10	−3.75