scintillating scotoma
   Also known as flittering scotoma, fortification spectrum, fortification figure, "fortification of Vauban, geometrical spectrum, herringbone, Norman arch, telehopsia, and teichopsia. The term scintillating scotoma is indebted to the Latin noun scintilla (spark) and the Greek noun sko-tos (darkness). It was coined in or shortly before 1870 by the British physician and migraineur Hubert Airy (1838-1903), whose father was a migraineur as well. Airy's classical autodescription of the phenomenon runs as follows. "When it was at its height it seemed like a fortified town with bastions all around it, these bastions being coloured most gorgeously... All the interior of the fortification, so to speak, was boiling and rolling around in a most wonderful manner as if it was some thick liquid all alive." Today the terms scintillating scotoma, fortification spectrum, and the others mentioned above are used to denote a * geometric visual hallucination consisting of an extremely bright, sometimes coloured, zigzag line or 'fortification wall', which may begin near the fovea in one hemi-field and then spread out towards the periphery of that same hemifield without touching the vertical meridian. For a further description of this phenomenon, see the entry Fortification spectrum.
   References
   Airy, H. (1870). On a distinct form of transient hemiopsia. Philosophical Transactions of the Royal Society of London, 160, 247-264.
   Sacks, O. (1992). Migraine. Revised and expanded. New York, NY: Vintage Books.
   Wilkinson, F. (2004). Auras and other hallucinations: Windows on the visual brain. Progress in Brain Research, 144, 305-320.

Dictionary of Hallucinations. . 2010.

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  • Scintillating scotoma — Infobox Disease Name = PAGENAME Caption = Example of a scintillating scotoma, as may be caused by cortical spreading depression. DiseasesDB = ICD10 = ICD10|H|53|1|h|53 ICD9 = ICD9|368.12 ICDO = OMIM = MedlinePlus = eMedicineSubj = neuro… …   Wikipedia

  • scintillating scotoma — noun a localized area of diminished vision edged by shimmering colored lights; in many people it indicates the onset of migraine • Syn: ↑flittering scotoma • Hypernyms: ↑scotoma …   Useful english dictionary

  • Scotoma — Infobox Disease Name = PAGENAME Caption = DiseasesDB = ICD10 = ICD10|H|53|4|h|53, ICD10|H|53|1|h|53 ICD9 = ICD9|368.4, ICD9|368.12 ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = D012607 A scotoma (Greek: darkness ; plural:… …   Wikipedia

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  • scotoma — 1. An isolated area of varying size and shape, within the visual field, in which vision is absent or depressed. 2. A blind spot in psychological awareness. [G. skotoma, vertigo, fr. skotos, darkness] absolute s. a s. in which there is no… …   Medical dictionary

  • flittering scotoma — noun a localized area of diminished vision edged by shimmering colored lights; in many people it indicates the onset of migraine • Syn: ↑scintillating scotoma • Hypernyms: ↑scotoma …   Useful english dictionary

  • 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… …   Dictionary of Hallucinations

  • Retinal migraine — Classification and external resources ICD 10 G43.81 Migraines Migraine Prevention of migraines Aura Cortical spreading depression …   Wikipedia

  • 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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