Laurel...to be totally honest, I watched about 30 seconds of it and shrugged. Watching him clap & sing was not particularly interesting...to me.

Of course it's possible to have that near-death experience and upon revival, feel joyous..etc! His experience is HIS...it made HIM want to sing and make happy noises...but it tells ME nothing about exactly what happened. When death is near, and the brain 'almost' ceases to function..(gets less blood and oxygen...etc.) all sorts of things might happen. Memories and images can be accessed in strange patterns because of neuro-chemical changes, and when revived, it can be like a weird dream.....we just don't KNOW, and it's hard to get volunteers to 'almost' die to run experiments, so we take notes from that small group who survive....and I realize that some report OOB memories. Why? I don't know. I do know *I* have dreamed of being places I could NOT have been...like flying....and that too was happy and joyous! I wish I had more flying dreams.

If it happened to me, I'd like to think I'd cherish the joy..and maybe sing a bit, too....but not speculate about metaphysical causes.

Your mileage may vary.