This is a simulation of what a migraine aura, or "scintillating scotoma" looks like. I've reduced the gradual 30 minute timeframe down to 30 seconds. It happened to me for the first time last night, starting with central blurred shapes, blind spots, and bright lights, then radiating out to the right in an almost perfect semicircle of vibrating zigzag colors. The shape got further and further into my periphery until it finally disappeared.
