This is actually one of the insights that I think are pretty common with LSD. Your brain is made up of various subsystems (visual processing, time perception, l

This is actually one of the insights that I think are pretty common with LSD. Your brain is made up of various subsystems (visual processing, time perception, language interpretation, language generation, motor control, etc.), but subjectively they all seem to be a singular "you" unit. With LSD it's really demonstrated to you that the "you" part is in some ways separate from some of the other parts but in other ways not separate. It's a feeling and an experience that is very hard to describe to someone who hasn't also experienced it, although I have heard some people have a similar effect with really deep meditative states. Either way, you're not likely to change into a completely different person after an acid trip. You just think about things a little differently is all, and even that wears off after a while.