1. Department of Radiology, Michigan State University, East Lansing, Michigan.
2. Department of Psychology, Michigan State University, East Lansing, Michigan.
3. Cognitive Imaging Research Center, Michigan State University, East Lansing, Michigan.
4. Department of Intercollegiate Athletics, Michigan State University, East Lansing, Michigan.
5. Department of Kinesiology, Michigan State University, East Lansing, Michigan.
6. Department of Neurology and Ophthalmology, Michigan State University, East Lansing, Michigan.
7. Department of Family Medicine, Michigan State University, East Lansing, Michigan.
8. Department of Psychiatry, Michigan State University, East Lansing, Michigan.