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A common theme in these early perspectives was the differentiation of pseudohallucinations from hallucinations based on their subjective, internal nature and absence of sensory realness. [ 5 ] The relevance of pseudohallucinations in contemporary psychiatry has grown with the establishment of initiatives like the Hearing Voices Network .
Kandinsky described a state involving auditory hallucinations that were perceived to be "made by someone else," which he termed pseudohallucinations. Over time, Kandinsky found the term "pseudohallucinations" confusing and preferred terms such as "hallucinoid," "presentation," "illumination", and "illustration."
Hallucination is defined as visual perception without external stimulation. It must be distinguished whether the individual is able to recognize that the perception is not real, also called pseudo-hallucination, or that the individual endorses it as real, also called delusion. It is only delusion that has serious psychiatric implications.
Hallucinogen persisting perception disorder (HPPD) is a non-psychotic disorder in which a person experiences apparent lasting or persistent visual hallucinations or perceptual distortions after using drugs, [1] including but not limited to psychedelics, dissociatives, entactogens, tetrahydrocannabinol (THC), and SSRIs.
Articles relating to hallucinations, perceptions in the absence of an external stimulus that have the qualities of real perceptions. Hallucinations are vivid, substantial, and are perceived to be located in external objective space. Hallucinations are a combination of 2 conscious states of brain wakefulness and REM sleep.
Paul Eugen Bleuler (/ ˈ b l ɔɪ l ər / BLOY-lər, [1] Swiss Standard German: [ˈɔʏɡeːn ˈblɔʏlər, ˈɔʏɡn̩-]; 30 April 1857 – 15 July 1939) [2] was a Swiss psychiatrist and humanist [3] [4] most notable for his contributions to the understanding of mental illness.
Stendhal syndrome is a proposed condition in which someone experiences rapid heartbeat, fainting, confusion, and even hallucinations when exposed to works of beauty. [ 81 ] Stockholm syndrome is a proposed condition in which a hostage develops an emotional bond with their kidnapper while in captivity. [ 82 ]
The syndrome is commonly accompanied by frequent hallucinations, pseudohallucinations, and visual illusions. [ 5 ] Individuals with oneiroid syndrome typically recognise the perceived phenomena as belonging to alternate realms or dimensions inaccessible to ordinary people, rather than to the tangible, external world. [ 5 ]