Recently, there was a study done on rats which stated that when rats are at the Near Death stage, there seems to be a huge surge of activity in their brains. Some people believed that this may explain NDEs, but this one host at the Skeptiko website claims that the rat experiment was stupid, and that it cannot be used as a useful NDE explanation. This what he said:

Alex Tsakiris: The correlation isn’t that strong. It contradicts earlier research that looked at Co2 in the blood. But here’s the real kicker, and it’s what relates to the work that you’ve done both in your personal experience in adventure travel and about your book. That’s that the media has this perception that the near-death experience is about hallucination. It’s about all these symptoms that are associated with lack of oxygen in the blood, which is what this research is really about.
The elevated Co2 levels are really a by-product of not getting enough oxygen in the blood, as you point out quite correctly in your book. If you look at near-death experience research, which is well established now for 20 years, what we find is exactly the opposite. People who have a near-death experience have an increased level of lucidity; an increased level of awareness.
The most recent research that we reported on here where they interviewed extensively 1,000 near-death experiences, 76% of them said that their experience during the near-death experience was more conscious than their everyday life. And the data that they report is not hallucinatory at all – 98% of the data that they report is realistic and real. So if you have a dream and you see you’re in a car and then suddenly the car turns into a lion, these are hallucinations. These things don’t occur in the near-death experience.

After reading this quote, do you think it is possible that NDEs are actually real experiences?