Nothing really new here people. Humans have been put in "near death" states for years, hooked up to life support and have come back to "life"....so to speak.
Many have been determined "clinically dead" for several minutes, and brought back to life as well. Those who have come back to life, generally give accounts of "supernatural" visions regarding heaven and hell, so if anything...I believe these "near death" experiences would more than likely validate the possibility of life after death, rather than disprove it. Some say that chemical reactions in the brain are responsible for these "near death" visions..however..there really is nothing substantive out their to prove that theory.
Back on topic. I believe the real question science is trying to answer is how long can someone remain in a "near death" state, before completely dying?
My opinion...Unless someone is able to bring a completely dead body back to life...(ie bodies that have been in the mortuary/grave for a couple of days and are decomposing)
there isn't any real discovery here...