On Einstein’s death in 1955, his body was taken to an autopsy lab in Princeton, NJ. He had donated his brain to science, prior to the cremation of his body. There, Dr. Thomas Harvey removed his brain, then stole it. He examined it in sections but could find nothing different. When he finally returned the brain, it was studied further. Here is a report provided by the Center for History of Physics on the website “How Stuff Works.”
“Inspecting samples that Harvey had carefully preserved, Sandra F. Witelson and colleagues discovered that Einstein’s brain lacked a particular small wrinkle (the parietal operculum) that most people have. Perhaps in compensation, other regions on each side were a bit enlarged; later they were found to have other unusual features. These regions, the inferior parietal lobes, are known to have something to do with visual imagery and mathematical thinking. Thus Einstein was apparently better equipped than most people for a certain type of thinking.”
