As a migraineur, just about the last thing I want to look at is migraine art. That said, none of the pieces shown in the article are particularly good visual representations of the scintillating scotoma that I experience.
Though I won’t look at the images, I can say that the auras I experience don’t all look the same. Some are blurrier than others, and some have more structure. It got to the point I could predict how painful and how long they would last by the shape and speed of the aura’s onset. The most painful ones had the most clearly defined structures, while I was much more likely to throw up if they were especially blurry.
And now I’m starting to feel that particular sort of sick just discussing it, so I’ll stop there!
Note to non-migraine-enjoyers: the grey blob in the video isn’t grey, it’s just an area you can’t see in. Your brain tries to fill it in the best it can, as it does with any eye damage, so you might see a blank region on a page when there’s actually text there, for example. This means the shimmery bit isn’t at the edge of a grey blob, but a strange nothing-zone of fuzziness where things that “enter” the zone may or may not vanish, and which feels distorted and wrong, like a fun-house mirror and a kaleidoscope at once. If they get big enough they kinda go blank, but still aren’t really grey—I’m not sure what color you’d call them.
(At least for me—maybe some people really see a grey splotch?)