Veit Stuphorn1,2,3. 1. Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21218-2685; veit@jhu.edu. 2. Zanvyl Krieger Mind/Brain Institute, Johns Hopkins University, Baltimore, MD 21218-2685. 3. Department of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, MD 21218-2685.