Typical propagation pattern of a visual migraine aura.

Abstract

<p>(a) Right visual hemifield (dotted polar grid) with five subsequent sketched “snapshots” of a traveling visual migraine aura symptom in the shape of a crescent pattern. Numbers inside the scotom gives the time passed (in minutes) since first occurrence. Data is taken from Ref. <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0005007#pone.0005007-Lashley1" target="_blank">[1]</a> (b) Visual field disturbance shown by reversed retinotopic mapping projecting the affected area onto a flat model of the primary visual cortex.1.</p