Trauma of 9/11 appears to have altered brains, study suggests

Magnetic resonance imaging of the brains of healthy adults more than three years after Sept. 11, 2001, shows areas that have less gray matter volume in those who were near ground zero on 9/11, compared with those who were much farther away. This is three views of the brain areas that have lower gray matter volume in the 9/11-exposed group. Notably, all of these areas (which show up brighter in this image) are associated with the processing of emotion.