Hallucination

A hallucination is a sensory perception experienced in the absence of an external stimulus, as distinct from an illusion, which is a misperception of an external stimulus. Hallucinations may occur in any sensory modality - visual, auditory, olfactory, gustatory, tactile, or mixed.

References

• {{note|1}}Sidgewick, H., Johnson, A, Myers, FWH et al (1894) Report on the census of hallucinations. Proceedings of the Society for Psychical Research, 34, 25-394.
  
• {{note|2}}Ohayon MM. (2000) Prevalence of hallucinations and their pathological associations in the general population. Psychiatry Research, 97(2-3), 153-64.
  
• {{note|3}}Kapur S. (2003) Psychosis as a state of aberrant salience: a framework linking biology, phenomenology, and pharmacology in schizophrenia. American Journal of Psychiatry, 160(1), 13-23.
  
• {{note|4}}Bentall RP. (1990) The illusion of reality: a review and integration of psychological research on hallucinations. Psychological Bulletin, 107(1), 82-95.