People who are more vulnerable to PTSD have a smaller _______ than those who do not develop this disorder.

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Research has shown that people who are more vulnerable to PTSD have a smaller amygdala than those who do not develop this disorder. The amygdala plays a key role in processing emotions, particularly fear and anxiety, and is involved in the formation of emotional memories. Therefore, a smaller amygdala may make individuals more susceptible to experiencing intense fear and anxiety in response to traumatic events, and may also contribute to the development of lasting emotional memories that contribute to the symptoms of PTSD.

People Who Are More Vulnerable to PTSD Have a Smaller