1.When do we become aware of self? According this problem, the doctor does a test about the kids. Their mother puts a mark on they face. First baby who is 18 months does not recognize his change on his face. But the second baby who is 24 months recognize her different on her face. Time by time, this test history is illustrate that the person's age between 18 to 24 months become aware4 of self. 2.Where does consciousness reside? All of brain cortex dose consciousness reside. It dose not tell us the general cortex. 3.Can we know whether someone still has conscious awareness? Someone still have conscious but not strong enough. 4.What evidence is there that single neurons are involved in consciousness? The evidence it that if you are very similar with something like super star, movie, just seeing the picture you would response to it. 5.What does the difference in consciousness between waking and sleeping tell us about our sense of self? When we are wake can conscious. A single shock shares a serious of responses.. Because we will connect the different parts to the cortex availably to communicate. But when we are sleeping we are unconscious the communication channels shout down. I think sometimes my conscious self charge my decisions but sometimes I can not control myself to do some decisions.