Soldiers’ brains adapt to perceived threat during mission
A study of soldiers who took part in the ISAF mission in Afghanistan between 2008 and 2010 has found that their brains adapt when they are continuously exposed to stress. The perceived threat appears to be the major predictor of brain adaptation, rather than the actual events. In other words, if a roadside bomb goes off right in front of you, the degree to which you perceive this as threatening is what counts. This is what determines how the brain and the stress system adapt. Between 2008 and 2010 the researchers studied a group of 36 soldiers. Before and after taking part in the mission, the soldiers’ brain activity was measured and compared with the brain activity of a control group of equal size who stayed at home. Unique to this study is that it is the first to use a control group. This control group, which stayed behind in...