For combat veterans suffering from post-traumatic stress disorder, ‘fear circuitry’ in the brain never rests

http://feeds.sciencedaily.com/~r/sciencedaily/~3/fADMLxhJrxg/130518153257.htm

Chronic trauma can inflict lasting damage to brain regions associated with fear and anxiety. Previous imaging studies of people with post-traumatic stress disorder, or PTSD, have shown that these brain regions can over-or under-react in response to stressful tasks.

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