A distinguished figure in neuroscience, Herbert Jasper arrived at the MNI from the United States in the 1930s. He was a pioneer in the use of electroencephalography (EEG) a technique that he largely introduced to Canada and helped to develop into an essential neuroscience tool. In collaboration with MNI founder, Wilder Penfield, Jasper employed EEG to find the source of seizures in epilepsy and in other brain disorders. Together they wrote scientific papers about the brain's functional anatomy that had widespread influence. Jasper died in 1999.