Study Study shows how traumatic experiences can leave their mark on a person's eyes

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New research shows that a patient's pupils can reveal if they have suffered a traumatic experience in the past. The study examined how an individual's eyes responded when shown threatening images.


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The response of people with PTSD was different to other people, including people who had been traumatised but did not have PTSD.
Another unexpected result was that pupils of the patients with PTSD not only showed the exaggerated response to threatening stimuli, but also to stimuli that depicted “positive” images, such as exciting sports scenes.
These were the most interesting parts, to me.
 
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