Robert Monroe wrote 3 books on OOBEs. He used to try to correlate his experiences out of body with things in the real world. He did one set of tests several ti

Robert Monroe wrote 3 books on OOBEs. He used to try to correlate his experiences out of body with things in the real world. He did one set of tests several times. His wife put a number of nails in a locked box next to his bed and he'd put his phantom hand inside and try feel the number that were inside. He never got it right enough to be statistically significant. He also tried something similar with an object downstairs, but he said he'd have such weird experiences even going downstairs OOB that repeated tests were impossible. He suggested the process of trying to test something skewed the results or made his subconscious resist in someway. On the other hand there were one or two things that were very unusual, specific events that correlated very strongly, so it's tricky to discount the phenomenon as completely fabricated. I think that whether they're objectively true experiences or not, if you could get deeper into your subconscious and look around it'd be fascinating.