What makes us who we are?

I picked an episode called “Who Am I?”, which is what my essay is intended to be about. People used to believe the self lies in the heart. Neurologists believe the self is created by constant firing of neurons. Both are wrong. Not only can people recognize themselves; but chimpanzees can recognize themselves too. A guy named Julian Keynon did an experiment where he mixed his own image with an image of Bill Clinton with some cheap photo editing software, fifty-fifty. He showed the image to many different people, and they all noticed Bill Clinton, and when he looked at it, he saw more of himself. He then did the same experiment with his patients, mixing their image fifty-fifty with an image of Bill Clinton. The same results occurred. Then Julian used an drug on said patient to put half their brain asleep, and then have then look at the image again. When the right hemisphere of the brain was asleep, the patient would fail to see themselves in the image. When the right hemisphere of the brain was awake, they would always see themselves in the image. So, whatever or however we are self-aware, it takes place in the right half of our brains. After that, they go on to tell the story of a woman who had a brain aneurism, called “The Day My Mother’s Head Exploded.” The title had already won me over. Her daughter asked her where she was while she was unconscious, and apparently she was in Vietnam, as a little old man, farming vegetables. After she underwent surgery she was unconscious for three months, then in a hospital room for another two. The weird part is that she had all these different personality traits, like she was a completely different person, almost the opposite of who she was before. Apparently “we are all just a car crash or a slip away from being a different person.” At least that’s what a neuropsychologist said. It kind of makes you think twice about a lot of things.