I learned sometime ago that if you was a child who was brought up in trauma as an adult you may have an enlarged amygdala hence the constant hypervigilance. I have became aware recently that I am developing an aversion to any books/ tv / movies of a dark and heavy matter. been replacing it with light fluffy cute things. Do feel a lot calmer....it got me thinking do you recon that the primitive brain does not recognise that the horror movie with all the people being murdered in very creative ways is not really happening and is responding accordingly..setting you off letting out the stress chemicals e.t.c