moving scotoma
   A term used to denote a scotoma (i.e. an area of loss or impairment of vision) that moves across the field of vision. A well-known example is the *fortificating spectrum or * scintillating sco-toma preceding a migraine attack. The term moving scotoma is used in opposition to the term * stationary scotoma.
   References
   Sacks, O. (1992). Migraine. Revised and expanded. New York, NY: Vintage Books.

Dictionary of Hallucinations. . 2010.

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  • stationary scotoma —    A term used to denote a scotoma (i.e. an area of loss or impairment of vision) that does not move across the field of vision. The term is used in opposition to the term * moving scotoma.    References    Sacks, O. (1992). Migraine. Revised and …   Dictionary of Hallucinations

  • fortification spectrum —    Also known as fortification figure, fortification of Vauban, geometrical spectrum, herringbone, flittering scotoma, Norman arch, scintillating scotoma, telehopsia, and teichopsia. The introduction of the term fortification spectrum is commonly …   Dictionary of Hallucinations

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