sleep deprivation-induced hallucination

sleep deprivation-induced hallucination
   Also known as sleep deprivation hallucination. The term sleep deprivation refers to the deliberate prevention of sleep. Sleep deprivation may be self-induced or induced by others, as in interrogation, torture, or sleep deprivation experiments. On the basis of sleep deprivation experiments it is known that many individuals can do without sleep for a period of up to 60 h without any substantial effects upon their performance on tasks with a novel or challenging character, whereas their performance on familiar and especially boring tasks tends to decrease dramatically. After 30-60 h of sleep deprivation, overall performance tends to decrease and symptoms such as dysarthria, blurring of vision, * diplopia, and the occurrence of *microsleeps may become manifest. Microsleeps are defined as short lapses of time, on the order of a few seconds to a minute, during which the brain enters a sleep state and the amplitude of alpha waves on the electroencephalogram (EEG), characteristic of the waking state, tends to be lower. After six or more days without sleep, additional symptoms tend to arise such as drowsiness, disorientation in time and place, illusory alterations in the passage of time (i.e. *time distortions), diminished reality monitoring, derealisation, depersonalization, formal thought disorder, a decrease in motor activity, paranoia, delusions, * illusions (including the *hat illusion), * hypnagogic and * hypnopompic hallucinations, * hallucinations proper, * metamorphopsias (such as * micropsia, * macropsia, * pelopsia, *macroproxiopia, and * microtelepsia), and other *misperceptions. Sleep deprivation-induced hallucinations tend to be visual in nature, but they can also be auditory, tactile, or compound in nature (such as the combined seeing and feeling of cobwebs all over one's body). Pathophysiologically, they are conceptualized as *perceptual release phenomena. As a technique, sleep deprivation may be regarded as diametrically opposed to * sensory deprivation. A person intentionally employing sleep deprivation for the purpose of exploring the psyche may be called a *psychonaut.
   Williams, H.L., Morris, G.O., Lubin, A. (1962). Illusions, hallucinations and sleep loss. In: Hallucinations. Edited by West, L.J. New York, NY: Grune & Stratton.

Dictionary of Hallucinations. . 2010.

Look at other dictionaries:

  • sleep deprivation hallucination —    see sleep deprivation induced hallucination …   Dictionary of Hallucinations

  • fasting-induced hallucination —    A term used to denote a hallucination evoked or facilitated by fasting. A conceptual distinction can be made between fasting for dietary reasons, anorexic fasting, forced fasting, and ritualistic fasting. In any case, fasting is a powerful… …   Dictionary of Hallucinations

  • sleep — sleepful, adj. sleeplike, adj. /sleep/, v., slept, sleeping, n. v.i. 1. to take the rest afforded by a suspension of voluntary bodily functions and the natural suspension, complete or partial, of consciousness; cease being awake. 2. Bot. to… …   Universalium

  • hallucination — hallucinational, hallucinative /heuh looh seuh nay tiv, neuh tiv/, adj. /heuh looh seuh nay sheuhn/, n. 1. a sensory experience of something that does not exist outside the mind, caused by various physical and mental disorders, or by reaction to… …   Universalium

  • Hallucination — For other uses, see Hallucination (disambiguation). Hallucination Classification and external resources My eyes at the moment of the apparitions by August Natterer …   Wikipedia

  • Psychosis — Not to be confused with Psychopathy. For other uses, see Psychosis (disambiguation). Psychosis Classification and external resources ICD 10 F20 F29[1] ICD 9 …   Wikipedia

  • Hypnagogia — (Greek ὕπνος, húpnos sleep + the root found in ἄγω, ágō to lead away, conduct, convey , ἀγωγεύς, agōgeús conveyor , ἀγωγή, agōgḗ abduction, transport, leading away etc.), often misspelled hypnogogia , is a term coined by Alfred Maury for the… …   Wikipedia

  • Insomnia — This article is about the sleeping disorder. For other uses, see Insomnia (disambiguation). Insomnia Classification and external resources ICD 10 F51.0, G47.0 …   Wikipedia

  • Somnolence — Classification and external resources ICD 10 R40.0 ICD 9 780.09 Somnolence (or drowsiness …   Wikipedia

  • Stimulant psychosis — Classification and external resources ICD 10 F15.5 ICD 9 292.1 Stimulant psychosis is a psych …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.