Now a study conducted at Wake Forest Baptist Medical Center has found that a novel form of treatment reduced symptoms of the disorder by effectively letting patients "hear" their own brainwaves.
While it affects an estimated 7 to 8 percent of the general US population, PTSD is a particular problem for people serving in the military.
Symptoms include depression, insomnia, flashbacks, and emotional distress, which can over time greatly disrupt a person's everyday life.
"Ongoing symptoms of post-traumatic stress, whether clinically diagnosed or not, are a pervasive problem in the military," says Charles H. Tegeler, principal investigator on the study.
There, algorithms turn those readings into auditory frequencies and play them back in close to real-time, letting patients literally hear their own brain activity.
As a result, that resets the stress response patterns and helps fight the symptoms of PTSD.
Over 12 days, these patients received on average about 20 HIRREM sessions each, with symptoms recorded both before and after. »