History: French neurologist Guillaume Duchenne de Boulogne triggers the expression of 'terror' on a subject through electrical stimulation the mimetic muscles, 1862 [902x1248]

http://i.imgur.com/iZi5VzK.jpg via /r/HistoryPorn http://www.reddit.com/r/HistoryPorn/comments/4f29gu/french_neurologist_guillaume_duchenne_de_boulogne/