Clinical Research Details Clinical Research Non-invasive vagal nerve stimulation and sleep Study Description This study is investigating if using a stimulation devise can improve quality of sleep for veterans suffering from PTSD. Inclusion/Exclusion Criteria Inclusion Between 18 and 50 years old Veteran Meets PTSD criteria (consider a combination of the following): PTSD dx Meets criteria for all PTSD DSM-5 criteria on CAPS-5 (A-E) and symptoms have lasted for at least one month Exclusion TBI < 6 months ago Current significant neurologic (e.g., dementia, stroke) or psychiatric illness (e.g., bipolar disorder, schizophrenia) History of major psychiatric illness prior to PTSD (e.g., bipolar disorder, schizophrenia) Untreated sleep apnea Habitual sleeping conditions that cannot be realistically recreated Prescribed medications that can interfere with the autonomic nervous system Current illicit or prescription drug abuse Current marijuana or alcohol use beyond low risk Currently pregnant Open Enrollment Contact Name: Meghan MarotzContact Phone: (904) 244-4694Contact Email: meghan.marotz@jax.ufl.edu Investigators Mariam Louis, M.D. Medicine