Walter Rudolf Hess ( March 17 , 1881 -- August 12 , 1973 ) was a Swiss physiologist who won the Nobel Prize in Physiology or Medicine in 1949 for mapping the areas of the brain involved in the control of internal organs .
Walter Rudolf Hess ( 17 March 1881 -- 12 August 1973 ) was a Swiss physiologist . He won the Nobel Prize in Physiology or Medicine in 1949 for locating the areas of the brain involved in the control of internal organs which he shared with Egas Moniz .