One of the most informative articles I have read can be found if you search,
Post Traumatic Stress Disorder What happens in the Brain written by Sethanne Howard and Mark W. Crandall, MD. I have WePow to thank for this article as I am constantly researching information on PTSD.

The other information I found very informative is at http://www.bullyonline.org/stress/ptsd.htm

Open Eyes