FIGURE 2.

HALL-Hallucination. Here are represented the French concepts that could have influenced the introduction of the term “pseudohallucination” by Hagen (1868); the contemporary German concepts that are very similar to pseudohallucinations but have different names; and the further evolution of the term: some authors emphasize the lack of objectivity as the main difference between hallucinations and pseudo hallucinations (Kandinsky, Jaspers, Lugaro, Petit) but others focus instead on the presence of insight (as Bleuler, Sedman, Hare).