I think that those results should be analyzed in the light of this
http://www.wired.com/wiredscience/2009/09/fmrisalmon/ study.
Sadly, the study about vegetative state pat... let's call them in the correct way, unburied corpses, has the only effect of giving unfounded hopes to relatives and prolong their hellish experience.
In the last decades, medicine has started to become more and more not a solution, but a problem. Doctors enjoy (probably for economical reasons) to intensify and prolong all kind of treatments, without the slightest regard about the outcome. E.g. a couple of hours ago I read on a news site the story of a little girl "saved" from a tumor. The terapy side effects will prevent her to grow beyond 4 feet (1.2 meters) and she will experience learning disabilities and hearing defects. A subnormal deaf dwarf. According to which criteria you can call this result a success?
Bye.