Table 3.

Comparison of diffusion tensor imaging parameters of the subgroups A and B.

	Lower dorsal ARAS		Lower ventral ARAS		Upper ARAS
	FA	TV	FA	TV	FA	TV
Subgroup A	0.41 (±0.05)	330 (±165.70)	0.36 (±0.04)	262 (±147.55)	0.35 (±0.02)	19725.61 (±3852.02)
Subgroup B	0.39 (±0.04)	363.29 (±172.64)	0.36 (±0.04)	132.48 (±100.79)	0.35 (±0.03)	20758.85 (±7028.13)
p-value	0.127	0.441	0.836	0.003*	0.899	0.524

Values represent mean (±standard deviation); ARAS, ascending reticular activating system; FA, fractional anisotropy; TV, tract volume.

^*significant differences between the subgroup A and B at p < 0.05.