Events that trigger ptsd include: violent personal assault, natural or human cause disaster, accident, war. Affect on the brain: patients have significant reduction bilaterally, reductions in. Deficits in performance on neuropsychological tests of frontal and temporal lobe function: predisposing factors may also contribute including. A life background with poor social support. Treatment: often difficult, virtual-reality (vr) exposure therapy. Begins with mild events (such as children playing) and gradually add increasingly stressful components (such as a roadside bomb exploding) The system pumps smells that can range from the scent of bread baking to the smell of gun powder and burning rubber. Off-the-shelf subwoofers mounted under the subjects chair recreates movement. His theories were based on observations of his patients. Didn"t have the help of imaging data that we have today. Theory: our motivations are hidden by the unconscious mind, a repressive force withholds our sexual and aggressive motivation from conscious awareness, mental illness results from the failure of repressive processes.