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Study examines how the brain perceives stress
By Staff Writer
Soldiers who engage in combat are frequently exposed to trauma that could lead to the development of psychological conditions that require cognitive therapy, such as post traumatic stress disorder (PTSD). Researchers recently released the results of a study they conducted to analyze the effect stress has on how the brain perceives threats.
The study, which is published in the journal Molecular Psychiatry, analyzed 36 soldiers who took part in the International Security Assistance Force mission in Afghanistan between 2008 and 2010. Soldier brain activity was measured before and after taking the mission. A control group of equal size had received combat training, but remained in the barracks.
Study results revealed that the brains of the soldiers who participated in the mission adapted to continuous exposure to stress. Though these individuals did not develop PTSD, their combat experiences did have an effect on the parts of the brain that regulate vigilance and emotion. In addition, this effect was seen to persist at least two months after they had returned home.
These results led researchers to conclude that changes to the brain can be caused by combat experiences.
