The expression système anti-hallucinatoire was introduced in or shortly before 1973 by the French psychiatrist Henri Ey (1900-1977) to denote the morphological and functional organizations of the brain and mind, which he envisaged along the lines of the British neurologists John Hughlings Jackson (1835-1911) and Charles Scott Sherrington (1857-1952), and to which he attributed an active protective influence against the interference of hallucinatory percepts. As Ey maintains, "It is due to its constitution and its equilibrium that consciousness is so organized that it can defend the ego's system in conformity with reality, as well as with its [own] idealistic values, against hallucinatory entropy."
References
Ey, H. (1973). Traité des hallucinations. Tome 2. Paris: Masson et Cie., Éditeurs.
Dictionary of Hallucinations. J.D. Blom. 2010.