1The PTSD Research Group, Brain Sciences Center, Department of Veterans Affairs Health Care System, Minneapolis, MN, United States

2Department of Neuroscience, University of Minnesota Medical School, Minneapolis, MN, United States

3Department of Psychiatry, University of Minnesota Medical School, Minneapolis, MN, United States

5Department of Psychology, University of Minnesota, Minneapolis, MN, United States

6Department of Neurology, University of Minnesota Medical School, Minneapolis, MN, United States