“The study of haptic intelligence leads to even deeper questions about the somatic self. Our skin is us because it draws a line around our existence: we experience the world as ourself. We can separate ourself from our eyes and ears, recognize the information they give us as information, but our tactile and proprioceptive halos supply us with the sense that we are constant selves.
“There are rare conditions in which you come to believe that while, say, the right half of your body is you being yourself, the left half of your body is someone else’s—some uncomfortably close-talking, peering stranger you would like to get away from. Out-of-body experiences are related to these illusions, and they are probably key both to religious experience and to tales of alien abductions. The possibility of such illusions suggests that their opposite—our agreed-on coherent sense of a continuous self—may be a convenient fiction, an organized cognitive heuristic that we impose on experience to let us go on having it.” (bold added)
—Adam Gopnik, “Feel Me: What the Science of Touch Says About Us” in The New Yorker