" Bruce Miller, a neurologist at the University of California, San Francisco, studies elderly patients with a relatively common form of brain disease called frontotemporal dementia, or FTD. He’s found that in some cases where the FTD is localized on the left side of the brain, people who had never picked up a paintbrush or an instrument can develop extraordinary artistic and musical abilities at the very end of their lives. As their other cognitive skills fade away, they become narrow savants. "

― Joshua Foer , Moonwalking with Einstein: The Art and Science of Remembering Everything