I've had the strangest thing happen to me 4 times now over about a 3 year period. I will have been asleep and suddenly wake with a huge start. The first time I felt like everything was blank and for lack of any other way to explain it, I feel like I had been 'unplugged' and suddenly plugged back in. Like a switch had been flipped back on. This felt like it happened in the blink of an eye where I was just shocked into an awake state. It is very disturbing and I wonder at the time what in the world was that or what happened?

Has anyone ever had this experience and does anyone know what this is?