When I was lying in my bed a while ago, trying to relax, I suddenly felt my eyes moving erratically from left to right. I was fully conscious when this happened, although deeply relaxed. At this time nothing further happened, but I have experienced it once before when meditating. That time it went further into the vibrations that precede lucid dreaming, but it went no further. Could this be the same eye movements as in REM-sleep? Has anyone had similar experiences?