French neuropsychiatry in the Great War: between moral support and electricity.

In World War I, an unprecedented number of soldiers were suffering from nervous disturbances, known as war psychoneuroses. Mechanisms of commotion, emotion, and suggestion were defined in order to explain these disturbances. In France, emphasis was placed on the mechanism of suggestion, based on pithiatism, introduced by Joseph Babinski (1857-1932) before the war to highlight the concept of suggestion and its hazy border with simulation.