There Are 19 Different Types of Smiles

The first person to discover that there were different kinds of smiles was a 19th-century French doctor named Duchenne de Boulogne. This man is considered one of the pioneers of neurology and an authority on smiles. Over time, the findings of Duchenne de Boulogne have been fully validated. This doctor was obsessed with the use of electricity for medical and therapeutic purposes. More particularly, he focused on the study of facial expressions. One of the topics he studied in depth was the different types of smiles. During his investigations, he came across a man who suffered from facial insensitivity. In…