Neuromodulation of the Fear Extinction Circuit Using Temporally and Anatomically Specific TMS in Humans

This study is testing a brain stimulation technique called transcranial magnetic stimulation (TMS) to help people with PTSD (post-traumatic stress disorder) overcome fear responses. By targeting the brain circuit involved in fear extinction, researchers hope to find new ways to treat PTSD. The study also enrolls healthy volunteers for comparison. **You may be eligible if...** - You have a current diagnosis of PTSD (for the patient group) - OR you have no current psychiatric disorders (for the healthy volunteer group) - You are willing and able to give informed consent **You may NOT be eligible if...** - You have a history of seizures, significant head injury, or neurological disease - You have metal implants in your head (other than dental work) or a pacemaker/cochlear implant - You are pregnant - You are currently using illicit substances - You have significant active suicidal thoughts or behavior - You are taking antipsychotic medications or high-dose stimulants - You are on bupropion above 300 mg/day or on an unstable dose Talk to your doctor to see if this trial is right for you.