hallucination, false perception characterized by a distortion of real sensory stimuli. Common types of hallucination are auditory, i.e., hearing voices or noises and visual, i.e., seeing people that are not actually present. Hallucinations play a prominent role in schizophrenia schizophrenia (skĭt'səfrē`nēə)
..... Click the link for more information. and in the mania stage of bipolar disorder (see depression depression, in psychiatry, a symptom of mood disorder characterized by intense feelings of loss, sadness, hopelessness, failure, and rejection. The two major types of mood disorder are unipolar disorder, also called major depression, and bipolar disorder, whose
..... Click the link for more information. ). They are also significant during withdrawal from various drugs, particularly depressants such as barbiturates, heroin, and alcohol (see delirium tremens delirium tremens (trē`mənz, trĕm`ənz)
..... Click the link for more information. ), and under the influence of hallucinogenic drugs hallucinogenic drug (həl
..... Click the link for more information. such as LSD LSD or lysergic acid diethylamide
..... Click the link for more information. , mescaline, and psylocybin. Hallucinations may occur in normal people under conditions of sensory deprivation, emotional stress, religious exaltation, or great fatigue.

hallucination

Perception of objects, sounds, or sensations having no demonstrable reality, usually arising from a disorder of the nervous system or in response to certain drugs (see hallucinogen). Hallucinations are in many ways similar to dreams: they derive their content from perceptions known to memory, though these can be greatly transformed. Hallucinations can result when attention collapses from intense arousal due to extreme anxiety, fatigue, excitement, or other causes. They figure prominently in the diagnosis of schizophrenia.

hallucination (redirected from hallucinational)

hallucination

hallucination
(redirected from hallucinational)