Table 2.

Significant differences in the brainstem and thalamus between secondary and primary dynamic mechanical allodynia to the right ophthalmic division (V1) of the trigeminal nerve of 11 healthy subjects.

Area	Brush to the secondary area vs brush to the primary area (right V1)
	Talairach x, y, z	T
Medulla Reticular Formation	0, −30, −49	2.60
Ventral Medulla (RVM)	0, −25, −37	−2.22*
Pons Reticular Formation	−1, −24, −21	−2.51*
Ipsi dlPAG/IC	5, −32, −12	−2.94*
Ctrl dlPAG	−4, −32, −15	−2.23*
Ipsi Medial Thal	5, −10, 5	−2.28*
Ctrl Ant Cingulate (BA 24)	−8, 31, 9	−2.83*
Ctrl Post Cingulate (BA 23/30)	−5, −53, 20	−5.24*
Ctrl Sup Frontal Gyrus (BA 9)	−4, 53, 32	−2.31*
Ctrl Sup Frontal Gyrus (BA 8)	−13, 26, 54	−4.35*
Ipsi Cerebellum	1, −41, −18	−3.03*
Ctrl Cerebellum	−34, −57, −49	−3.27*

T = maximum t

^*minimum t (deactivation); Ipsi = ipsilateral; Ctrl = contralateral; spV = spinal trigeminal nucleus; RVM = rostroventromedial medulla; dlPAG = dorsolateral periaqueductal gray; IC = inferior colliculus; Thal = thalamus; Ant = anterior; Post = posterior; Sup = superior.