An Introduction to PTSD Research
- The effects of previous traumatic events
- Brain anatomy and function
- Hormones and neurotransmitters.
Research on PTSD and Previous Traumatic Events
People who have been abused as children or who have had other previous traumatic experiences are more likely to develop PTSD.
It was previously believed that people who tended to be emotionally numb after a trauma were showing a healthy response; but now, some researchers suspect that people who experience this emotional distancing may be more prone to PTSD.
Research on Brain Anatomy
Studies in animals and humans have focused on pinpointing the specific areas of the brain and circuits involved in
anxiety and fear, which are important for understanding
anxiety disorders such as PTSD.
Fear, an emotion that evolved to deal with danger, causes an automatic, rapid protective response in many systems of the body. It has been found that the fear response is coordinated by a small structure deep inside the brain, called the amygdala. The amygdala, although relatively small, is a highly complicated structure, and recent research suggests that different
anxiety disorders may be associated with abnormal activation of the amygdala.
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