Table 2.

In Vivo Radial Diffusivity in Rat Brain After Sham Injury, Single or Repeated mTBI.

				p
Region of interest	Sham	mTBI	rmTBI	Sham vs. mTBI	Sham vs. rmTBI	mTBI vs. rmTBI
I Corpus callosum	0.64±0.01	0.66±0.04	0.70±0.01	.25	<.001	.03
C Corpus callosum	0.68±0.04	0.65±0.04	0.68±0.04	.25	.74	.37
I Cingulum	0.65±0.02	0.63±0.02	0.65±0.02	.08	.70	.20
C Cingulum	0.65±0.03	0.62±0.02	0.62±0.03	.06	.18	.92
I Fimbria	0.68±0.02	0.67±0.03	0.65±0.03	.40	.04	.29
C Fimbria	0.67±0.02	0.64±0.02	0.64±0.015	.07	.027	.97
I Internal capsule	0.54±0.02	0.53±0.03	0.53±0.02	.56	.26	.82
C Internal capsule	0.56±0.02	0.54±0.02	0.55±0.02	.13	.15	.36
I Hippocampus	0.75±0.01	0.77±0.01	0.79±0.02	.21	<.001	.017
C Hippocampus	0.78±0.03	0.76±0.01	0.77±0.03	.26	.37	.77
I Cortex	0.69±0.01	0.68±0.01	0.68±0.01	.35	.36	.91
C Cortex	0.69±0.01	0.68±0.01	0.68±0.01	.55	.40	.82
I External capsule	0.64±0.01	0.64±0.01	0.67±0.02	.97	.005	.01
C External capsule	0.65±0.01	0.65±0.01	0.68±0.01	.61	.001	<.001
I Amygdala	0.82±0.05	0.78±0.04	0.79±0.05	.12	.20	.70
C Amygdala	0.79±0.04	0.78±0.02	0.79±0.02	.37	.99	.17

Note. I = ipsilateral or impact side; C = contralateral or uninjured side; mTBI = mild traumatic brain injury; rmTBI = repeated mild traumatic brain injury. Results presented as M ± SD. N for groups are Sham = 6, mTBI = 5, and rmTBI = 8. Significant differences are shown in bold.

p < .05 accepted as statistically significant and shown in bold.