Neuroevolutionary Time-depth Principle and PTSD

Posttraumatic stress disorder in war veterans: A discussion of the Neuroevolutionary Time-depth Principle. 09/08/09. Trauma is a universal phenomenon. Violence is a type of trauma and war is one of the ways in which violence is expressed. The "Neuroevolutionary Time-depth Principle" of innate fears, based on prevalence data, suggests that high rates of posttraumatic stress disorder (PTSD) after combat exposure can be due to the fact that this fear-stress response appeared as a reaction to inter-group male-to-male and intra-group killings after the rising of population densities in the Neolithic period. Journal of Affective Disorders