xCollection: Mécanisme de la physionomie humaine: où, Analyse électro-physiologique de l'expression des passions
xTitle: Fig. 17 : A study of the expressive action of m. procures in an old man (also shown in Fig. 3, 7, 8, 9, 12, 13, and 14). On the right, electrization of m. procerus : severity, aggression. On the left : attention.