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A pseudohallucination (from Ancient Greek: ψευδής (pseudḗs) ' false, lying ' + hallucination) is an involuntary sensory experience that is vivid enough to be perceived as a hallucination, but is recognised by the individual as subjective and lacking objective reality. [1]
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."
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 ...
This glossary covers terms found in the psychiatric literature; the word origins are primarily Greek, but there are also Latin, French, German, and English terms. Many of these terms refer to expressions dating from the early days of psychiatry in Europe; some are deprecated, and thus are of historic interest.
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.
Edward Harold Hagen (born June 1, 1962) [1] is an American biological anthropologist and professor in the Department of Anthropology at Washington State University Vancouver, where he has taught since 2007. His research has focused on evolutionary explanations for mental health phenomena and substance use.
Paraphrenia is often associated with a physical change in the brain, such as a tumor, stroke, ventricular enlargement, or neurodegenerative process. [4] Research that reviewed the relationship between organic brain lesions and the development of delusions suggested that "brain lesions which lead to subcortical dysfunction could produce delusions when elaborated by an intact cortex".
The hallucinations occurred during normal conscious state and the patient’s neurological signs were associated with those characteristic of an infarct to the midbrain and pons. [1] Von Bogaert, Lhermitte’s colleague, named this type of hallucination “peduncular,” in reference to the cerebral peduncles , as well as to the midbrain and ...