We did some acid with my then boyfriend. When we went to sleep that morning, he couldn’t sleep. He tossed and turned, still nothing. Then he had a sudden sort of “vision” of his friend in an unfamiliar room. He called him and described the room, turns out the friend was at his childhood home, visiting his parents. He described the room pretty clearly and his friend was flabbergasted - if thats the correct word. This is the one thing I could not explain, although had some theories on how acid might enhance the “receiver” part of the brain. There’s not enough research done so that stayed as a theory. We did acid a bunch of times later, couple times just to experience something similar, but it never did.