I think the sensation is called Dissociation.Dayle Record said:I have some news for you all, the world we layed down over the top of the natural world, is fake. We can't even really see it. Let me explain. Our eyes are round, and they really can't see all these straight up and down lines skyscrapers, bridges and buildings. We have to use our internal software, to interpret what we are seeing and make rectilinear perspective.
If you think about what self-awareness is and then think what it means to become momentarily self-aware of your self-awareness, then this is much like dissociation. You have become discociated to another level of awareness.