Brian G Dias1, Kerry J Ressler2. 1. Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA 30329 Center for Behavioral Neuroscience, Yerkes National Primate Research Center, Atlanta, GA 30329. 2. Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA 30329 Center for Behavioral Neuroscience, Yerkes National Primate Research Center, Atlanta, GA 30329 Howard Hughes Medical Institute, Chevy Chase, MD 20815.