clipped from: www.disaboom.com   
A bill currently being considered  by the Virginia State Senate could authorize experimentation on incapacitated and dying humans, say disability advocates and bioethics experts.
A woman in a coma
According to bioethics blogger Wesley J. Smith, this proposition directly violates the Nuremberg Code, a code of ethics governing human experimentation which specifically requires that human subjects be capable of consenting to the experiment in which they participate. The Nuremberg Code also mandates that human subjects be capable of fully understanding the experiment.
In addition, one Virginia advocate says the Virginia advance directive form has language permitting experimentation as the default, unless otherwise specialized. According to Smith, Unless the creator scratches the provision out, he or she is authorizing him or herself to be the subject of human experimentation.