porropsia
   The term porropsia comes from the Latin verb portare (to carry, to transport, to take away) and the Greek verb opsis (seeing). It translates loosely as 'seeing things being carried away' and is used to denote a visual distortion in which stationary objects appear to be moving away from the observer. The German neologism Porropsie was introduced in or shortly before 1904 by the German psychiatrist and neurologist Karl Heil-bronner (1869-1914). Phenomenologically, various types of porropsia can be discerned. In 1937 the Japanese physician Chuo-Gauka-Iho Arimoto proposed a classification of three phe-nomenological types, which he referred to as porromicropsia, porropsia proper, and porro-macropsia. In Arimoto's system, the term por-romicropsia refers to a type of porropsia in which seemingly receding objects also appear to decrease in size, whereas in porropsia proper no changes are perceived in the apparent size. The term porromacropsia is used by him to denote a condition in which seemingly receding objects appear to increase in size. As a class, porrop-sia may be classified as a *metamorphopsia or a type of * dysmetropsia. It may present as an isolated symptom or as part of a cluster of symptoms known as the * Alice in Wonderland syndrome. Although Heilbronner considered por-ropsia to be an *entoptic phenomenon, its occurrence in the context of * aurae indicates that a central origin is equally possible. Today the concept of porropsia would seem to be assimilated by the concept of *teleopsia, which refers to a visual distortion in which objects appear to be further away than they are. Although the two phenomena are not identical, the terms porropsia and teleopsia are sometimes used as if they were synonyms.
   References
   Vujic, V., Ristic, J. (1939). Ein Fall von Porropsie mit gestörter palpatorischer Größenschätzung. Deutsche Zeitschrift für Nervenheilkunde, 150, 30-38.

Dictionary of Hallucinations. . 2010.

Look at other dictionaries:

  • порропсия — (porropsia; греч. porro далеко + opsis зрение) форма метаморфопсии, при которой предметы кажутся расположенными дальше или ближе, чем на самом деле …   Большой медицинский словарь

  • Порропси́я — (porropsia; греч. porrō далеко + opsis зрение) форма метаморфопсии, при которой предметы кажутся расположенными дальше или ближе, чем на самом деле …   Медицинская энциклопедия

  • teleopsia —    Also known as teliopsia and telopsia. All three terms stem from the Greek words tèle (far), and opsis (seeing). The term teleopsia was introduced in or shortly before 1949 by the British neurologist Macdonald Critchley (1900 1997) to denote a… …   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

  • 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

  • porromacropsia —    see porropsia …   Dictionary of Hallucinations

  • porromicropsia —    see porropsia …   Dictionary of Hallucinations

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