Trepanation

I am curious about this, but to try to answer this one with a scalpel or welding torch would be deeply unethical and terribly illegal. I mean, unless you like trepanation...

How do you perceive yourself?

Not you yourself your physical self and fleshy presence. I mean, how do you perceive of your own consciousness(and/or/)sentience? Not so much in the sense of "I think, therefore I am", but more of where your thoughts are thought and your memories are stored, how the stream of your consciousness moves, if it moves, or the shape of the container thereof.

I've given a lot of thought to this, but I'm not going to reveal how I perceive myself right now lest I bias your responses.