L0040117 Experiments in physiology. Expression; Sorrowful Prayer Credit: Wellcome Library, London. Wellcome Images images@wellcome.ac.uk http://wellcomeimages.org The facial expression of sorrowful prayer on the human face being induced by electrical currents. Photograph 19th Century By: Guillaume Benjamin Amand Duchenne de BoulogneMÈcanisme de la physionomie humaine, ou, Analyse Èlectro-physiologique de l'expression des passions Guillaume Benjamin Amand Duchenne de Boulogne Published: 1862 Copyrighted work available under Creative Commons Attribution only licence CC BY 4.0 http://creativecommons.org/licenses/by/4.0/
