I suggest four explanations: (1) an extension of our normal sense of presence of ourselves and others in our physical and social environments; (2) a conflict between the high road of controlled reason and the low road of automatic emotion; (3) a conflict within the body schema, or our physical sense of self, in which your brain is tricked into thinking that there is another you; or (4) a conflict within the mind schema, or our psychological sense of self, in which the mind is tricked into thinking that there is another mind.
