From what I've seen of research on apparently-dispersed storage of memories in worms, I'd not be at all surprised to find that a human brain separated from a bo

From what I've seen of research on apparently-dispersed storage of memories in worms, I'd not be at all surprised to find that a human brain separated from a body has (assuming we could "boot it up" in that state, as you put it) lost a lot of memories or functionality beyond the obvious, even assuming we could perfectly preserve everything present in the brain per se.