There is also HPPD (Hallucinogen persisting perception disorder) [using the same gif to visualize even] https://en.m.wikipedia.org/wiki/Hallucinogen_persisting

There is also HPPD (Hallucinogen persisting perception disorder) [using the same gif to visualize even] https://en.m.wikipedia.org/wiki/Hallucinogen_persisting_perception_disorder https://en.m.wikipedia.org/wiki/Hallucinogen_persisting_perc... I always thought this is the way human see the world. But no it's just me and some other unfortunate people it seems. I too always assumed it's associated to migraines. Thanks for the visual snow hint!