I watched it happen inside of my head later on. Now that I'm
  aware of it I was able to walk through a doorway and "notice" a
  memory disappear and reappear. It was pretty awesome. A task I
  have to do, I remembered in one room. I walked through a door
  into the kitchen, and it was gone but I suddenly remembered
  something I needed to do in the kitchen. Went back to the
  livingroom, forgot the kitch...en thing and remembered the
  livingroom thing. "