1. Sanders‐Brown Center on Aging, College of Medicine University of Kentucky Lexington Kentucky USA
2. Department of Behavioral Science, College of Medicine University of Kentucky Lexington Kentucky USA
3. Department of Neurology, College of Medicine University of Kentucky Lexington Kentucky USA
4. Department of Radiology, College of Medicine University of Kentucky Lexington Kentucky USA
5. Department of Neuroscience, College of Medicine University of Kentucky Lexington Kentucky USA
6. Department of Physiology, College of Medicine University of Kentucky Lexington Kentucky USA