HALLUCINATORY DISPOSITION

Also known ashallucinatory stateandhallucinatory predisposition. The French termdisposition hallucinativeis indebted to the Latin noundispositio, which means arrangement or natural tendency. It was employed, and possibly introduced, by the French physician Pierre Dheur to denote an individual's ability or propensity to hallucinate. As Dheur argues, one's hallucinatory disposition is a given, involuntary property, whereas hallucinations themselves may in some cases be summoned up voluntarily (hence his use of the term * voluntary hallucination).

Dheur, P. (1899).Les hallucinations volontaires(l'état hallucinatoire).Suivi d'un chapitre sur les hallucinations. Notes manuscrites et inédites du Dr. J. Moreau(de Tours). Paris: Société d'Éditions Scientifiques.