Actor and Alzheimer's advocate Seth Rogen testifies before the Senate Committee on Appropriations about the disease's damaging effects on patients and their loved ones.
Mandel Ngan/AFP/Getty Images
March 4, 2014 As those with Alzheimer's disease lose their memories, do they also lose their identities? Commentator Tania Lombrozo considers new research into traits seen as central to identity.
NPR thanks our sponsors
Become an NPR sponsor