Fig. 1
From: Cerebral blood flow and arterial responses in migraine: history and future perspectives
rCBF measured repeatedly during development of an attack of migraine aura. Top left shows a normal flow distribution in the hemisphere but during successive measurements numbered in the figure a blue area at the posterior pole of the hemisphere appears and it expands gradually forward. These changes are very similar to changes during CSD shown schematically on the right side of the figure. Adapted from Lauritzen et al. [15]