persistent aura without infarction
   A term used to denote a rare complication of migraine with aura, consisting of persistent * simple or * geometric visual hallucinations such as *visual snow, lasting for months or years, without any evidence of cerebral infarction.
   References
   Relja, G., Granato, A., Ukmar, M., Ferretti, G., Antonello, R.M. (2005). Persistent aura without infarction: Description of the first case studied with both brain SPECT and perfusion MRI. Cephalalgia, 25, 56-59.

Dictionary of Hallucinations. . 2010.

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  • Persistent aura without infarction — (PAWOI) is a little known condition first described under the designation prolonged migraine aura status [Haas DC. Prolonged migraine aura status. Ann Neurol 1982; 11: 197 199] that is not yet fully understood. PAWOI is said to be a possible… …   Wikipedia

  • aura —    Also known as aural phenomenon and psychical state. The term aura is Greek for wind, breeze, or smell. Its introduction into medicine has been attributed to the Greek physician Pelops, the master of the great Galen of Pergamum (129 c. 216 AD) …   Dictionary of Hallucinations

  • Visual snow — is a transitory or persisting visual symptom where people see snow or television like static in parts or the whole of their visual fields, especially against dark backgrounds. It is much like camera noise in low light conditions. The severity or… …   Wikipedia

  • visual snow —    Also known as aeropsia. Both terms refer to a * simple visual hallucination depicting televisionlike static. Visual snow may be either transient or permanent, and it may affect either the whole visual field, or one or more parts of it. In… …   Dictionary of Hallucinations

  • dream scintillation —    Also known as flickering consciousness. The term dream scintillation is indebted to the Latin noun scintilla (spark). It was introduced in or shortly before 1949 by the American neurobiologist Alexander Forbes (1882 1965) to denote… …   Dictionary of Hallucinations

  • Neige visuelle — Demande de traduction Visual snow → Neige visuelle …   Wikipédia en Français

  • Palinopsia — (Greek: palin for again and opsia for seeing ) is a visual disturbance that causes images to persist to some extent even after their corresponding stimulus has left. These images are known as afterimages and occur in persons with normal vision.… …   Wikipedia

  • Imagerie par résonance magnétique — Pour les articles homonymes, voir IRM et MRI. L imagerie par résonance magnétique (IRM) est une technique d imagerie médicale permettant d obtenir des vues 2D ou 3D de l intérieur du corps de façon non invasive avec une résolution relativement… …   Wikipédia en Français

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