Is Your Head Pulsating?

If you stare directly into a mirror and with a low light behind you, after about 30 seconds your head seems to change. Other people see their heads pulsate. But essentially, everything you're seeing is happening in the closed theatre of your cranium. That's where the show is getting played. So if you stop taking in information because you're stare, it'll start having its own reality trip. And so you go off to whatever reality you want. Really strange parts you believe it whatever your brain's serving up to. O when you're in the middle of a dream, you by the whole thing what do we the physical processes that are happening in the brain? This is right,