Cognitive presentation of Progressive Supranuclear Palsy Lead Investigator: Henry Paulson Institution : University of Michigan E-Mail : henryp@med.umich.edu Proposal ID : 1008 Proposal Description: We wish to explore the cognitive presentation of Progressive Supranuclear Palsy (PSP). Most PSP is diagnosed by movement disorders specialists. Those NACC listed cases that ultimately have PSP in the diagnosis (whether clinically or pathologically) may have had a more cognitive presentation. Hence we seek information on any NACC-enlisted participants in which PSP is listed as a primary or contributing diagnosis, clinically or pathologically.