That fake neurobiology trauma expert Dr. Haskell they used for these reports, my God, can it get any more pseudoscientific and hocus-pocus than this? Cortisol is not released by amygdala or by hippocampus. Brain does not change within seconds. The example she gives of someone pointing a gun and you not remembering details is utter non-sense. She classifies important details as "peripheral" details.  Before someone points a gun at you, you should be able to remember lot of details and when someone points a gun at you, you should still remember vividly lot of details about the gun according to Trauma Superiority Theory. More importantly, there is no "freeze" response by the brain, it is either fight or flight response. People only "freeze" when someone holds gun because they suspect any movement will lead to triggered bullet and ultimately instant confirmed death. They still look for an opportunity to fight/flight with the gun holder.