. Author manuscript; available in PMC: 2009 Jun 8.

Published in final edited form as: Nat Neurosci. 2007 Dec 23;11(2):232–237. doi: 10.1038/nn2032

Table 4.

Mean PTSD symptom intensity

Group	Re-experience	Avoidance/Numbing	Hyperarousal
Amygdala	0.45	0.28	0.41
vmPFC	0.84	0.58	0.83
Non-vmPFC/Non-amygdala	0.95	0.67	1.02
No brain damage	1.02	0.84	1.16

17 individual PTSD symptoms belonging to one of three symptom categories (re-experience, avoidance/numbing, and hyperarousal) were rated for intensity (0=none; 1=mild; 2=moderate; 3=severe; 4=extreme). A 3 × 4 ("symptom type" × "lesion group") ANOVA revealed a significant main effect of "lesion group" but no interaction effects.