This is not always the case. Only or naturally occuring deaths. Also, the reason you "dream" is because your rain releases all of its stored DMT in one sitting. Added on to THIS your brain activity slowly deteriorates through those seven minutes, so you are my tripping for seven minutes. You have maybe one to two minutes of potential subconscious thought before your brain stops receiving signals from the cortex.
No, I just know biology None of what I said is under assumption, it's the hard factual truth. Your brain does not perform at optimal level without oxygen. There may be occasional nerve synapse over residual connections for a brief time, but this wears away quickly.