On September 18, 2019, the twentieth participant completed experimental treatment in our ongoing study of the effect of MDMA on startle testing in healthy volunteers. Led by Principal Investigator Barbara Rothbaum, Ph.D., this study is conducted at Emory University in Atlanta, Georgia. If you have tried MDMA, you may be eligible to enroll in this study investigating the effects of MDMA on the startle response. For more information, please contact callan.m.coghlan@emory.edu. • Learn More