When heart stops beating - consciousness is lost in seconds. It is explained that it is due to the drop of blood pressure in brain veins. However, by my understanding - that should only make brain cells to starve of oxygen and make them die only in minutes(5+) and in the mean-time consciousness should continue all that time. Why that does not happen?

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    You're equating unconsciousness with brain death, and that's incorrect. Consciousness can be lost for many reasons even when the brain is perfectly healthy, which should tell you that consciousness is a much more fragile thing than brain death. – Carey Gregory Jul 16 '17 at 21:09
  • It's theorized that the brain releases large amounts of Dimethyltryptamine which slows downs time and gives the person in question vivid hallucinations and great feelings of spirituality while dying. So, according to this theory, the heart stopping triggers this release and for the next 5 minutes you trip some major ballsack, for what feels like an eternity, before becoming nothing more than a bag of flesh and nutrients for the ground. – DCON Jul 19 '17 at 13:35

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