tortopia

tortopia
   The term tortopia comes from the Latin tor-tum (that which has been turned) and the Greek verb opsis (seeing). It translates loosely as 'seeing things in a tilted position'. The term was proposed in 1983 by the American neurologist Allan H. Ropper to denote a symptom complex characterized by a tilting of the visual environment. At the core of this symptom complex lies the symptom " environmental tilt. In a conceptual and phenomenological sense, tortopia is closely related to " plagiopsia.
   References
   Ropper, A.H. (1983). Illusion of tilting of the visual environment. Report of five cases. Journal of Clinical Neuro-ophthalmology,3, 147-151.

Dictionary of Hallucinations. . 2010.

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  • environmental tilt —    Also referred to as visual tilting, tilting illusion, upside down reversal of seeing, and floor on ceiling phenomenon. All five terms denote a transient illusory percept in which the extracor poreal environment assumes a tilted or upside down… …   Dictionary of Hallucinations

  • plagiopsia —    The term plagiopsia comes from the Greek words plagios (tilted) and opsis (seeing). It is used to denote a visual distortion in which objects are perceived as inclined. As a phenomenon, plagiop sia was described as early as 1933 by the British …   Dictionary of Hallucinations

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