"Clinically, trauma-exposed victims often experience acute insomnia, indicating that such insomnia might provide prophylactic benefits in reducing the development of posttraumatic stress disorder via extinction of the fear-magnifying effects of memory."
Sleep deprivation facilitates extinction of implicit fear generalization and physiological response to fear - PubMed https://pubmed.ncbi.nlm.nih.gov/20889142/
"Clinically, trauma-exposed victims often experience acute insomnia, indicating that such insomnia might provide prophylactic benefits in reducing the development of posttraumatic stress disorder via extinction of the fear-magnifying effects of memory."