Migranes explained!

I have for years tried to explain the "aura" part of my migraines. This morning I woke up with one and in the ensuing "how do I make this thing go away" internet search I found this. It's a neat flash animation of how a visual migraine looks. It's not quite perfect, but it shows the general idea pretty well. (it's at the bottom of the blog post, though the words are interesting too)