As someone with epilepsy, the divorce between what my body is doing/experiencing and what my brain perceives or is asking for are precisely how you describe it.

It leads to a lot of out of body experiences and dissociation. As a weird side effect I also mostly only have lucid dreams now.

One thing I found odd is that there's entire groups of people who chase this kind of mental state. Usually through a state of psychedelic drugs to induce a state of altered mind. It's really odd to me because I hate the feeling myself, being forced into it. Though I suppose it's like anything, where if it's in small doses it's a fun novelty for some.

Anyway, my epilepsy has greatly affected my perception of my own perception abilities.