hypoxia (oxygen deficiency)
anoxia
electrical activity
​Anyone who is not shocked by quantum theory
has not understood it.
- Niels Bohr
dreams
drugs
What happens after death is so unspeakably glorious that our imagination and our feelings do not suffice to form even an approximate conception of it.
- Carl Jung
CO2 overload
hallucinations
The Day Science Begins to Study Non-Physical Phenomena, it Will Make More Progress in one Decade Than in All The Previous Centuries of its existence.
- Nikola Tesla
misc psychological
hypoxia
Sourcing - The majority of the information contained on this page, that addresses the arguments raised by skeptics of the near-death experience, are sourced from Pim van Lommel's invaluable book Consciousness Beyond Life. Click here to visit the book's Amazon page. We strongly recommend this most comprehensive book on the science of the near-death experience.