This study effects the effects of transcutaneous cervical vagal nerve stimulation (tcVNS) or a sham control on brain, physiology, and PTSD symptoms in Veterans with posttraumatic stress disorder (PTSD). Veterans undergo brain imaging and physiological measures in conjunction with traumatic scripts before and after three months of twice daily treatment with tcVNS or sham stimulation at home.
Veterans between the ages of 18 and 75 will be included with a diagnosis of PTSD based on DSM-5 criteria
a history of mild traumatic brain injury (mTBI) based on VA Criteria
moderate or greater TBI
positive pregnancy test
meningitis or other neurological disorder