Otfrid Foerster
Otfrid Foerster (German: [ˈfœʁstɐ]; 9 November 1873 – 15 June 1941) was a German neurologist and neurosurgeon, who made innovative contributions to neurology and neurosurgery, such as rhizotomy for the treatment of spasticity, anterolateral cordotomy for pain, the hyperventilation test for epilepsy, Foerster's syndrome, the first electrocorticogram of a brain tumor, and the first surgeries for epilepsy. He also made influential contributions in advancing knowledge of dermatomes (an area of skin that is supplied by a single pair of dorsal nerve roots), building upon previous work of Herringham, Thorburn, Sherrington, and others.