I wonder why people report the same sort of experiences when they have an NDE or even an OBE, if you've ever had or read about sleep paralysis you'll find a lot of people experience odd sensations that aren't explained, theres the weird sounds and imagery but why the vibrations, energy, pounding heart (not physically), then floating above, being about to fly around in what appears to be the real world with distortions, its all very odd.
There's more common oddity like passing through walls takes some force and going near power pulls or pushes (i forget), there's also reports of a cord attaching to your physical body, why do so many report this and why would the brain make cause it, it has yet to be explained.