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A hallucination is a perception in the absence of an external stimulus that has the compelling sense of reality. [6] They are distinguishable from several related phenomena, such as dreaming (), which does not involve wakefulness; pseudohallucination, which does not mimic real perception, and is accurately perceived as unreal; illusion, which involves distorted or misinterpreted real ...
The incident remains one of the prime examples of mass hysteria. West Bank fainting epidemic (1983) – a series of incidents in March 1983 wherein 943 Palestinian teenage girls, mostly schoolgirls, and a small number of IDF women soldiers fainted or complained of feeling nauseous in the West Bank.
An example of this would be hallucinations that have imagery of bugs, dogs, snakes, distorted faces. Visual hallucinations may also be present in those with Parkinson's, where visions of dead individuals can be present. In psychoses, this is relatively rare, although visions of God, angels, the devil, saints, and fairies are common.
For example, the task of generating high-resolution face images from low-resolution inputs is called face hallucination. [ 15 ] [ 16 ] In the late 2010s, the term underwent a semantic shift to signify the generation of factually incorrect or misleading outputs by AI systems in tasks like translation or object detection . [ 15 ]
In the Ghana sample, n = 76, auditory hallucinations were reported by 90.8% and visual hallucinations were reported by 53.9% of participants. [47] In the Nigeria sample, n = 324, auditory hallucinations were reported by 85.4%, and visual hallucinations were reported by 50.8% of participants. [47]
[3] [2] As an example of pseudohallucinations, Kandinsky cited hypnagogic hallucinations that occur in healthy individuals just before falling asleep. [4] Karl Jaspers further developed Kandinsky's ideas, emphasizing the "inner subjective space" as the locus of these experiences, where vivid sensory images occurred spontaneously but were devoid ...
Formication, a type of tactile hallucination, is the feeling of imaginary insects or spiders on the skin.. Tactile hallucination is the false perception of tactile sensory input that creates a hallucinatory sensation of physical contact with an imaginary object. [1]
For example, Slade and Bentall proposed the following working definition of a hallucination: "Any percept-like experience which (a) occurs in the absence of an appropriate stimulus, (b) has the full force or impact of the corresponding actual (real) perception, and (c) is not amenable to direct and voluntary control by the experiencer."