I mean, I didn't suggest that it was who they are. I am talking about a metaphysical concept called thought impulse. Nothing about the chemicals in your brain make you recieve thought impulses. If that was true, I could make you think specific thoughts at certain times. The best they have is patterns of brain wave function. (aggression, sympathy, honesty, and so on) What people think the brain does is widely misunderstood because people have been train to only think in terms of subject object. Read Pirsig, the Dynamic quality is the goal.