The first PET scan of a person with Cotard's revealed that metabolic activity in the frontal and parietal regions of the brain was so low as to resemble that of someone in a vegetativestate (Cortex, doi.org/mmt).
In 2005, Owen's team was the first to use functional MRI to uncover signs of consciousness in a person who was thought to be in a persistent vegetativestate.
In 2005, just as the deep brain stimulation patient was making his first forays into awareness, the fate of Terri Schiavo, a Florida woman who had been in a vegetativestate since 1990, sparked an ideological war.