I saw that your post had been up nearly all day and no one had replied so I thought I would take a crack at it. Though I have never had a seizure I do have panic attacks every once in a while. It’s like the thoughts in my head are coming way to fast and I feel a pit in my stomach then I’ll have a snap back to reality. Afterwards I’ll often feel exhausted for quite awhile afterward. I don’t really have any visual disturbances with them though.

P.S. I love your Carl Sagan quote 🙂