Definition of Illusion
Illusion: A perception that occurs when a sensory stimulus is present but is incorrectly perceived and misinterpreted, such as hearing the wind as someone crying. Everyone may occasionally experience an illusion. However, illusions are extraordinarily common in people suffering from schizophrenia.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=26292
Last Editorial Review: 1/23/2004
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