“In a trial like this, some subjects usually do get better, but rarely do they lose their PTSD diagnosis. It’s very promising.”“In a trial like this, some subjects usually do get better, but rarely do they lose their PTSD diagnosis. VNS Research Learn more about UTD researchers’ vagus nerve stimulation discoveries in News Center and UT Dallas Magazine. To learn more about how UT Dallas is enhancing lives through transformative research, explore New Dimensions: The Campaign for UT Dallas. Licensed clinical psychologist Dr. Mark Powers, a research center director of the Trauma Research Center at BSWRI, is the lead and co-corresponding author of the study.