I get essentially the same migrane symptoms. In my case probably due to micro-damage in the brain during open heart surgery, although I was also doing intense endurance based physical activities both before and after the surgery.
The visuslas are different from most drugs, but its pretty obvious from my experience that a lot of drug visuals result from distorted / altered interpretations of these (and other) “visual processing errors”. Some of my drug (and migrane) visions were / are strikingly similar to later work by Chuck Close, a hyper-realist painter who in his later work attempted to show the visual effects that resulted from his stroke.
