> I suspect these messages rely on the tendancy of someone tripping to stare off into space so the afterimage effect can come into play.
Not necessarily. I've taken LSD before and it legitimately seems to increase persistence of vision (otherwise known as tracers). If I wave my paw in a circle on LSD, I can see a short trail behind it, and it seems to slightly lag behind its actual real-world position (by around a quarter of a second?).
Not necessarily. I've taken LSD before and it legitimately seems to increase persistence of vision (otherwise known as tracers). If I wave my paw in a circle on LSD, I can see a short trail behind it, and it seems to slightly lag behind its actual real-world position (by around a quarter of a second?).
It looks a lot like this: https://youtu.be/ggFKLxAQBbc?t=26