1. Department of Veterans Affairs Medical Center, VA Salt Lake City Health Care System, Salt Lake City, Utah, USA
2. Department of Neurology, University of Utah, Salt Lake City, UT, USA
3. Departments of Physical Medicine and Rehabilitation, Neurology, and Radiology, Baylor College of Medicine, Houston, TX, USA
4. Department of Radiology, Duke University Medical Center, Durham, NC, USA
5. Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, Richmond, VA, USA
6. Department of Physics, University of Colorado Boulder, Boulder, CO, USA
7. National Institute of Standard and Technology, Boulder, CO, USA
8. Phantom Metrics Division of Psychology Software Tools Inc, Pittsburgh, Pennsylvania, USA.
9. Learning Research and Development Center, University of Pittsburgh, Pittsburgh, PA, USA
10. Missouri Institute of Mental Health, University of Missouri-St. Louis, St. Louis, MO, USA
11. Department of Psychology, Brigham Young University, Provo, UT, USA
12. Departments of Psychology and Engineering, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
13. Departments of Neurosurgery and Radiology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA