As you become more self-aware, you will notice several "mini-egos" that get triggered without your will. I talk about their characteristics, the role of the left-brain in its enforcement of these, and the effects of the attention on these mini-egos during Self-Observation.
Also, for further reading on the Left-brain, I recommend No Self, No Problem: How Neuropsychology Is Catching Up to Buddhism by Chris Niebauer, PhD.