About this trial
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.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Veterans will be included with a diagnosis of post-traumatic stress disorder (PTSD) based on DSM-5 criteria
Disqualifiers
a history of mild traumatic brain injury (mTBI) based on VA Criteria
moderate or greater traumatic brain injury
positive pregnancy test
meningitis or other neurological disorder
Trial design
Parallel
Treatments tested in this trial
tcVNS
DeviceActive stimulation with transcutaneous Vagal Nerve Stimulation (tcVNS)
sham
DeviceSham stimulation
Treatment groups
Trial outcomes
Primary outcomes
Change in post-traumatic stress disorder (PTSD) symptoms
Change in PTSD symptoms measured with the Clinician Administered PTSD Scale (CAPS) and PTSD Checklist (PCL) in tcVNS versus sham conditions
Secondary outcomes
Sympathetic function
Change in pre-ejection period (PEP) during traumatic scripts with VNS compared to sham. PEP is the time from ventricular contraction to aortic valve opening and is a measure of cardiac sympathetic tone
Interleukin-6
Change in interleukin 6 concentration in blood in response to traumatic scripts with stimulation with VNS versus stimulation with sham
Sponsors and contacts
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