Researchers at the University of Washington have released an excellent video that nicely summarizes some of the ethical issues surrounding the development of neuroprosthetics and neuroengineering. I think it's very innovative that scientists and philosophers are working together at the UW Center for Sensorimotor Neural Engineering in order to anticipate ethical issues related to advances in neuroscience. As technology creeps into our sense of what it is to be human, scientific knowledge will have to join forces with knowledge from the social sciences and humanities in order to avoid ethical quagmires.