Found it! Took me long enough. I wondered for a long time: ''Why
  do video games + movies ''feel'' like you're really there, when
  your body is sitting on your butt?''

  In 2005, they tested gamers and found that the ''lateral
  entorhinal cortex'' shows whether their CHARACTER is turning
  clockwise or counterclockwise... EVEN THOUGH the player's BODIES
  were sitting still.

  That's the missing piece I was looking for. This tiny little
  part of the brain, I think it's just behind your nose, gets
  input from ALL of the senses in some form - and especially the
  eyes and ears.. and gives you that ''artificial reality''
  feeling; it pulls in memories, pulls in information from your
  senses.. ties it together - my guess is it helps decide ''What
  is real right now''. It's active when you're dreaming... and, in
  short, I think it's the place in the mind where fantasy+reality
  are compared. inside > . < outside. It contains something you
  rarely hear about - I found very little information on it;
  called ''toggle neurons''; they have circuitry inside of them
  that behave very similarly to a #quantum computer; but you don't
  need fancy-shmancy quantum stuff to do it; it's just a feedback
  loop that nudges an on/off switch... and LOTS of them at the
  same time.

  The little man inside of the brain; there you are! You were
  right behind my nose the whole time.. (I hope this is it; been
  looking for it for over a year now)... and not knowing
  neuroscience, reading them scientific papers is hard :P