Table 2.

Group comparison of fractional anisotropy in ten reconstructed pathways

	PTSD		TENC		F*	p
	Mean	SD	Mean	SD
Forceps major	0.625	0.027	0.644	0.028	7.329	0.011
Forceps minor	0.521	0.045	0.531	0.041	1.730	0.198
ATR	0.417 (l) 0.410 (r)	0.034 (l) 0.031 (r)	0.431 (l) 0.421 (r)	0.034 (l) 0.035 (r)	2.641	0.088
Cingulum (angular)	0.330 (l) 0.342 (r)	0.032 (l) 0.042 (r)	0.348 (l) 0.340 (r)	0.039 (l) 0.044 (r)	1.735	0.194
Cingulum (c. gyrus)	0.494 (l) 0.418 (r)	0.040 (l) 0.043 (r)	0.509 (l) 0.447 (r)	0.067 (l) 0.049 (r)	2.766	0.079
CST	0.517 (l) 0.486 (r)	0.027 (l) 0.026 (r)	0.520 (l) 0.479 (r)	0.031 (r) 0.026 (r)	0.732	0.489
ILF	0.487 (l) 0.483 (r)	0.047 (l) 0.045 (r)	0.521 (l) 0.490 (r)	0.037 (l) 0.034 (r)	6.654	0.004**
SLF (parietal)	0.423 (l) 0.405 (r)	0.034 (l) 0.036 (r)	0.444 (l) 0.420 (r)	0.038 (l) 0.033 (r)	2.510	0.098
SLF (temporal)	0.461 (l) 0.432 (r)	0.034 (l) 0.027 (r)	0.474 (l) 0.439 (r)	0.029 (l) 0.031 (r)	2.443	0.104
Uncinate	0.403 (l) 0.412 (r)	0.038 (l) 0.025 (r)	0.422 (l) 0.422 (r)	0.023 (l) 0.024 (r)	2.713	0.083

^*F value for effect of group in univariate (f. major, f. minor) or multivariate (all others, predicting both hemispheres) analysis controlling for age, sex, and TMI.

^**p < 0.005. PTSD: posttraumatic stress disorder; TENC: trauma-exposed normal control; ATR: anterior thalamic radiation; CST: corticospinal tract; ILF: inferior longitudinal fasciculus; SLF: superior longitudinal fasciculus