Table 3.

Average (± SEM) FA and MD (×10⁻³ μm/msec) values for the ipsilateral and contralateral (to pain) tracts for PTN and control subjects

	Controls	PTN		p-value
Trigeminal nerve (root entry zone)
FA	0.3 ± 0.024	Ipsilateral	0.31 ± 0.027	0.64
		Contralateral	0.34 ± 0.039	0.84
MD	1.97 ± 0.144	Ipsilateral	2.01 ± 0.166	0.88
		Contralateral	1.94 ± 0.174	0.89
Spinal trigeminal tract
FA	0.52 ± 0.031	Ipsilateral	0.46 ± 0.015	0.24
		Contralateral	0.53 ± 0.077	0.97
MD	0.87 ± 0.065	Ipsilateral	0.82 ± 0.103	0.66
		Contralateral	0.85 ± 0.18	0.88
Ipsilateral trigeminothalamic tract
FA	0.57 ± 0.028	Ipsilateral	0.60 ± 0.042	0.57
		Contralateral	0.57 ± 0.028	0.06
MD	0.70 ± 0.049	Ipsilateral	0.64 ± 0.062	0.42
		Contralateral	0.63 ± 0.063	0.34
Contralateral trigeminothalamic tract
FA	0.57 ± 0.029	Ipsilateral	0.58 ± 0.032	0.77
		Contralateral	0.62 ± 0.056	0.42
MD	0.69 ± 0.048	Ipsilateral	0.66 ± 0.051	0.69
		Contralateral	0.60 ± 0.076	0.28

p-values are reported for two-sample t test between PTN and controls.