Catie Chang1, Shella Keilholz2, Robyn Miller3, Mark Woolrich4. 1. Advanced MRI Section, National Institutes of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA. 2. Department of Biomedical Engineering, Emory University/Georgia Institute of Technology, Atlanta, GA, USA. Electronic address: shella.keilholz@bme.gatech.edu. 3. The Mind Research Network, Albuquerque, NM, USA. 4. Oxford Centre for Human Brain Activity, Wellcome Centre for Integrative Neuroimaging, Department of Psychiatry, University of Oxford, United Kingdom.