 Neurological deficits have attracted philosophers interested in consciousness. For nearly fifty years philosophers have debated implications for the unity of the self of the Nobel Prize-winning experiments with commissurotomy patients who, for clinical reasons, had their corpus callosum surgically ablated (Nagel  1971).[12]  The corpus callosum is the huge bundle of axons connecting neurons across the left and right mammalian cerebral hemispheres. In carefully controlled experiments, commissurotomy patients seemingly display two dissociable “seats” of consciousness. Elizabeth Schechter (2018) has recently greatly updated philosophical treatment of the scientific details of these “split-brain” patients, including their own experiential reports, and has traced implications for our understanding of the self. 