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Anomalous experiences, such as so-called benign hallucinations, may occur in a person in a state of good mental and physical health, even in the apparent absence of a transient trigger factor such as fatigue, intoxication or sensory deprivation.[1]
The evidence for this statement has been accumulating for more than a century. Studies of benign hallucinatory experiences go back to 1886 and the early work of the Society for Psychical Research,[2][3] which suggested approximately 10% of the population had experienced at least one hallucinatory episode in the course of their life. More recent studies have validated these findings; the precise incidence found varies with the nature of the episode and the criteria of "hallucination" adopted, but the basic finding is now well-supported.[4]
- ^ Patterson, Christopher; Procter, Nicholas (2023-05-24). "Hallucinations in the movies tend to be about chaos, violence and mental distress. But they can be positive too". The Conversation. Retrieved 2023-05-28.
- ^ Gurney, E., Myers, F.W.H. and Podmore, F. (1886). Phantasms of the Living, Vols. I and II. London: Trubner and Co.
- ^ Sidgwick, Eleanor; Johnson, Alice; and others (1894). Report on the Census of Hallucinations, London: Proceedings of the Society for Psychical Research, Vol. X.
- ^ See Slade, P.D. and Bentall, R.P. (1988). Sensory Deception: a scientific analysis of hallucination. London: Croom Helm, for a review.