1. Department of Neuroscience University of Pittsburgh Pittsburgh Pennsylvania USA
2. Animal Imaging Center University of Pittsburgh Pittsburgh Pennsylvania USA
3. Department of Neurobiology University of Pittsburgh Pittsburgh Pennsylvania USA
4. Department of Neurodegenerative Disease, Queen Square Institute of Neurology, Huntington's Disease Centre and UK Dementia Research Institute at UCL University College London London UK
5. Department of Radiology University of Pittsburgh Pittsburgh Pennsylvania USA
6. Department of Bioengineering University of Pittsburgh Pittsburgh Pennsylvania USA
7. Center for the Neural Basis of Cognition University of Pittsburgh Pittsburgh Pennsylvania USA