- The term microtelepsia comes from the Greek words mikros (small), tèlè (far), and opsis (seeing). It refers to a variant of *dysmetropsia in which the perceived size and distance of objects is altered, in the sense that objects are perceived as smaller and further away than they are. Microtelepsia may present as an isolated symptom, as part of an *aura, or as part of a cluster of symptoms called the * Alice in Wonderland syndrome. Etiologically, it is associated with a variety of conditions, including epileptic seizures, migraine, * delirium, * delirium tremens, alcohol withdrawal, toxoplasmosis or typhoid infections, mesencephalic lesions, and intoxication with * hallucinogens such as LSD andmescaline.ReferencesNijboer, T.C.W., Ruis, C., van der Worp, H.B., de Haan, E.H.F. (2008). The role of Funktionswandel in metamorphopsia. Journal ofNeu-ropsychology, 2, 287-300.Taylor, I., Scheffer, I.E., Berkovic, S.F. (2003). Occipital epilepsies: Identification of specific and newly recognized syndromes. Brain, 126, 753-769.
Dictionary of Hallucinations. J.D. Blom. 2010.
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Alice in Wonderland syndrome — Also known as Alice in Wonderland effect, Wonderland syndrome, and syndrome of Alice in Wonderland. The term syndrome of Alice in Wonderland was introduced in or shortly before 1955 by the British psychiatrist John Todd (1914 1987) to denote a … Dictionary of Hallucinations
Dodgson, Charles Lutwidge — (1832 1898) Better known as Lewis Carroll. A British mathematician, and member of the Society for Psychical Research (SPR), as well as an author of children s books, who is probably best known for his Alice s Adventures in Wonderland.As… … Dictionary of Hallucinations
dysmetropsia — The term dysmetropsia comes from the Greek words dus (bad), metron (yardstick), and opsis (seeing). It is used to denote a distorted perception of image size. The term dysmetropsia was introduced in or shortly before 1916 by the British… … Dictionary of Hallucinations
lysergic acid diethylamide (lsd) and hallucinations — Lysergic acid diethylamide is known under many names, including LSD, LSD 25, and acid. It is usually classified as a semi synthetic psychedelic substance of the family of ergot alkaloids, as a hallucinogen or an entheogen. The ergo tamine… … Dictionary of Hallucinations
metamorphopsia — The term metamorphopsia comes from the Greek words metamorphoun (to change the form) and opsis (seeing). It translates roughly as seeing an altered form . It is not clear who introduced the term, but it appears in a medical lexicon as early as … Dictionary of Hallucinations
migraine aura — The term migraine comes from the Old English megrim, which is in turn indebted to the Greek noun hèmikranion (meaning half the skull). The introduction of the term hèmikranion is attributed to the classical physician Galen of Pergamum, born as … Dictionary of Hallucinations
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 … Dictionary of Hallucinations