It is natural to feel afraid during and after a traumatic situation. Fear triggers many split-second changes in the body to help defend against danger.

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Post-Traumatic Stress Disorder (PTSD) can happen to anyone. A number of factors can increase the chance that someone will have PTSD, many of which are not under that person's control.
Lead study author Joseph Dunsmoor said that the human mind uses cues to danger learned over time for self-defense, but certain circumstances can cause people to misidentify those cues Dunsmoor added, "Our research reveals that stress levels and the amount of time since an adverse event promote this type of overgeneralization." The research may help improve PTSD treatment outcomes for veterans in part by helping us understand how we may be able to prevent it in the first place. The researchers tested the effects of stress and time on a person's ability to correctly identify a cue associated with a negative outcome. The participants heard two tones with one followed by a shock, set by the participant at the level of "highly annoying but not painful."
Then, the researchers played tones in the range of the two frequencies and gauged participants' expectations of shock by self-report and data on skin responses that indicate emotional arousal. One group took the shock expectancy test immediately after the initial shock. The second group took the test 24 hours after the initial shock. Both groups underwent the stress/control priming activity just before the shock expectancy test. This study provides new data that will help us care for people with disordered patterns of fear and worry. The research appears in the Proceedings of the National Academy of Sciences.
Source-ANI
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