Ivan Petrovich [ee-vahn pyi-traw-vyich] /iˈvɑn pyɪˈtrɔ vyɪtʃ/ (Show IPA), 1849–1936, Russian physiologist: Nobel Prize in medicine 1904.
Ivan Petrovich (iˈvan pɪˈtrɔvitʃ). 1849–1936, Russian physiologist. His study of conditioned reflexes in dogs influenced behaviourism. He also made important contributions to the study of digestion: Nobel prize for physiology or medicine 1904