using single-photon emission computer tomography (SPECT), an imaging technique that can measure blood flow to highly specific regions of the brain.it will show increased activity in the limbic system, basal ganglia, prefrontal cortex, cerebellum, and temporal, occipital, and parietal lobes. Brain regions that are involved in fear processing and emotional regulation, sensory processing, and integration of information are also affected. The scan will be done under some kind of psychological stress

Talking about Post-traumatic stress disorder (PTSD)