Liminaire

Here we highlight the importance of the notion of hyperendophasia in the history of verbal hallucination. Our literature review will call above all on the great names who contributed to the notion of hyperendophasia, starting with Jules Séglas, who proposed this term at the beginning of the twentieth century. This literature review will be followed by an attempt to draw a theoretical connection between hyperendophasia, external action syndrome, mental automatism, and language parasite in the sense of Lacan. We will thus see that historically hyperendophasia has its source in the psychic hallucinations of Baillarger, and that it falls under the heading of verbal pseudo-hallucinations. The particularity that makes it a “pathological disorder of inner language” lies in particular in the fact that the subject feels dispossessed of his thoughts, that he does not recognize them as his own, that they are imposed on him. But hyperendophasia is not simply a pathology of inner language; it is a phenomenon that highlights the intrusive dimension of the Other, as well as the open-air unconscious of psychosis.