 Finally, DBS as well as neural prostheses and BCIs raise another neuroethical issue: our conception of humanity and our relations to machines. Some contend that these technologies effectively turn a person into a cyborg, making him or her something other than human. While some find this an ethically unproblematic natural extension of our species’ characteristic drive to invent and improve our selves with technology (Clark, 2004), others fear that creating a bio-cybernetic organism raises troubling questions about the nature or value of humanity, about the bounds of self, or about Promethean impulses. These questions too fall squarely in the domain of neuroethics.