: a sensory perception (such as a visual image or a sound) that occurs in the absence of an actual external stimulus and usually arises from neurological disturbance (such as that associated with delirium tremens, schizophrenia, Parkinson's disease, or narcolepsy) or in response to drugs (such as LSD or phencyclidine)
An important aspect of the study of hallucinations is the judgement of reality. How does a patient confer the character of reality on stimuli which, beyond any reasonable doubt, originate in his own mind? Cesare Davalli et al.
b
: the object of a hallucinatory perception
wasn't sure if the creature was real or a hallucination
2
: an unfounded or mistaken impression or notion : delusion
delusion implies an inability to distinguish between what is real and what only seems to be real, often as the result of a disordered state of mind.
delusions of persecution
illusion implies a false ascribing of reality based on what one sees or imagines.
an illusion of safety
hallucination implies impressions that are the product of disordered senses, as because of mental illness or drugs.
suffered from terrifying hallucinations
mirage in its extended sense applies to an illusory vision, dream, hope, or aim.
claimed a balanced budget is a mirage
Example Sentences
He could not tell if what he was seeing was real or if it was a hallucination. He has been having hallucinations due to the medication.
Recent Examples on the WebFiction acquires the true, tangible qualities of a hallucination while reality becomes somehow an oneiric dimension.Vogue, 12 Sep. 2022 The brightly colored plants carry a natural neurotoxin called grayanotoxin that, when consumed, can induce euphoria, hallucination and intoxication — as the bear quickly came to know. María Luisa Paúl, Washington Post, 12 Aug. 2022 The hallucination sequence occurs right as Tommy begins the suicide act. Josh St. Clair, Men's Health, 13 June 2022 But then Audiard films her pirouetting in slow motion through that same restaurant, in a joyous hallucination of a sequence that becomes its own glorious expression of ardent, unbridled desire. Justin Changfilm Critic, Los Angeles Times, 14 Apr. 2022 As the older Hernán shares a draft of his hallucination-stirring home brew and speaks about his own personal history, Jessica seems to empty herself out. Justin Changfilm Critic, Los Angeles Times, 7 Apr. 2022 Interrupted by the floating lanterns, your figure becomes a hallucination, akin to a fickle mirage in water.Washington Post, 31 Mar. 2022 Its value is a collective hallucination, dependent on constant salesmanship and, in some cases, deception and market manipulation. Ben Mckenzie, The New Republic, 10 Mar. 2022 Gonzo journalism—Thompson’s unique blend of hyperbolic commentary, satire, invective, hallucination, and media critique—developed unevenly, haphazardly, almost by accident. Peter Richardson, The New Republic, 28 Jan. 2022 See More