In this scheme, the conscious ego (or "concrete ego," added Charcot) was the center of the mind. The unconscious stayed at the periphery of the conscious ego. As a consequence of a trauma or a nervous or affective shock, fixed ideas (idées fixes), designated "I" in the figure, were produced and located in the unconscious, which Charcot compared to a "second ego in formation." He drew from "I" a vector he called force de reviviscence that represented a force allowing recollection. The force located in the conscious ego was blocked by the fixed ideas. Is this vector the first description of Freud's repression, with its consequence of the return of repressed feelings or memories? This may be the case, as Charcot added that the unconscious, a second ego in formation, acted on the conscious ego. Under the drive of the fixed idea, the thoughts stayed at the outskirts, trapped in the unconscious, "the latent ego," unattainable, "repressed" (3). Charcot's death in 1893 prevented his ideas and speculations on unconscious processes from being shared at that time. In particular, the study of the Charcot-Freud correspondence shows that Freud did not receive a significant portion of Charcot's idea about the unconscious (3).