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Medical Dictionary

aura

play
noun au·ra \ˈȯr-ə\

Medical Definition of aura

plural auras also aurae \-ē\play

  1. :  a subjective sensation (as of voices or colored lights or crawling and numbness) experienced at the onset of a neurological condition and especially a migraine or epileptic seizure <About 20 percent of migraine sufferers experience an aura as the first symptom of an attack. The aura may be a pulsing star of light, or a dance of geometric forms across the visual field, sometimes turning into hallucinations …—Natalie Angier, The New York Times, 14 Sept. 1993> <The migraine aura, which consists of episodes of well-defined, transient, focal neurologic dysfunction, develops over the course of more than 4 minutes and usually lasts no more than 60 minutes.—Sid Gilman, The New England Journal of Medicine, 11 June 1992> <The aura is due to electrical activity originating from the seizure focus and thus represents the earliest manifestations of a partial seizure.—Gary L. Westbrook, in Principles of Neural Science, 4th edition, 2000>





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