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Perhaps separating the mind from most of the physical senses is partially what gives people a new sense of being and clarity.

We expend a lot of making sense of sensory inputs, but what if most of that processing power is freed up? Perhaps this is related to how some mediation practitioners claim to have clearer focus of thought.

> a possible resumption of a network-level of cognitive and neuronal activity emerged up to 35–60 minutes into CPR.

That sounds rather disturbing TBH. I was hoping that when you're done, you are done.

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This reminds me of the feeling of calm that survivors have reported when they are dying of hypothermia or drowning.

I wonder what the evolutionary advantage of these things is?

If you're at the point of dying, probably not much you can do to pass on your genes.
The argument would be that people who don't have strokes have more time to spend passing on genes.
genetics isn't that simple. You share genes with people who do have children, and so genes which cause you to somehow benefit others, or even just yourself, are still selected over ones that don't, even if you don't have kids ypurself.

Not that I see how a head trip while dying can be any part of this process, just saying that "pass on your genes" is not all there is to genes.

What’s the evolutionary advantage of having a stroke?

Nothing. It’s something breaking and having arbitrary consequences.

There could absolutely be an evolutionary advantage to genes that kill some % of individuals, depending on who/when/where/why, since genes also work at the species and even ecosystem level, not just the individual level. Just like there are genes to kill individual cells.
Sure

But not in the immediate short term of failing organs. Those are unhandled exception errors

You lack imagination. A failing organ could absolutely be genetically evolved to fail in a given set of conditions.
A vital organ could be designed to fail. It’s incredibly unlikely that the side effects of this vital organ failing, which almost inevitably leads to death, are advantageously evolved.

There’s no gameplan for the headless chicken.

Yes, they are advantageously evolved, just like programmed cell death, because that is more advantageous than cancer. Evolution doesn't just work on the individual and simple level.
This is true, but I also find it hard to believe that everything in nature is intentional towards a positive evolutionary outcome.

For example: sharks being incapacitated when they’re flipped upside down, or any number of genetic diseases. It looks more like something that nature hasn’t optimized yet rather than something beneficial to the species.

No one said intentional. Nothing about the process requires anything like intention or purpose. The process is nothing more than "That which works, works." That's it. Even "works" isn't a value judged or decided by anyone, it's just what happens, or doesn't happen.
Just watched a veritasium video yesterday about breath holding, and they mentioned that as your co2 levels increase your urge to breath increases up to a point, but when you stop feeling that urge thats when you need to go up, because youre nearly out of oxygen
If this is not well researched or if it’s improperly done it can be really dangerous. If people start believing their loved ones are in there when doctors can’t really save them this could add a lot of suffering and cost to the healthcare system. Can anyone here tell?
My thing is, if this is true, then a fairly large percentage of us will experience a “lock-in” syndrome of complete paralysis for as long as a hour before we die.

Death just got a bit longer haha.

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I worry sometimes that our perception of time changes as we near death, such that the actual dying moments could feel like year and years… sort of like the Picard flute story line from TNG
I once had a really bad trip where I thought this was what was happening, or it lasting for eternity. It was the worst thing ever and I ended up with really bad psychosis for a year after, repeatedly getting panic attacks.
Which substance?
Cannabis, funny enough
Are you positive it was real cannabis? I have a friend who got a similar reaction while smoking "weed" for the first time in Japan. Turns out it was one of those legal weed lookalikes.
I have a friend who also experienced something like that on "k2." It was (reportedly) really intense and scary.
One of my pot smoking friends had some of the same stuff and she said it felt just like ordinary weed to her, but I guess I'll never be 100% sure. Being an idiot teenager, I smoked a lot of it at once, never having smoked before.
This is my professional account, but in my professional experience, cannabis miscalculations can lead to time travel lmao
And it's indeed heightened consciousness and not merely hallucinations as in several cases people describe scenes and events occurring around them or even far away from them, that are later confirmed and verified. My only conclusion is that somehow our consciousness is completely independent from our brains, is connected to everything like a huge network, and survives death to exist in another dimension of reality.
Do you have some journal articles on this?
Who exactly has confirmed and verified legitimate instances of astral projection? That's not in the article.
"New dimensions of reality"? Sorry, there is only one dimension of reality. Our perception of that reality changes from the norm because neurotransmitters are obviously wonking about.

Don't romanticize death and dying, it's not good for people on the edge of caring about living.

>Sorry, there is only one dimension of reality.

How do you know that?

And is it length, width or depth? Surely our reality has atleast three dimensions.
Those dimensions are an invention of our brains
No, there are three plus one dimensions of reality.
The cardinality of ℝ is the same though for all finite n (same for ℕ, ℤ, or ℚ), so it doesn’t make that much of a difference. ;)
Ah! I see I've found a cosmologist!
Why are you not using normal letters to denote Rⁿ and N, Z or Q?
They're using the typical symbols for denoting those sets, which are fancier than the symbols used for mere variables. One only resorts to using basic letters if the usual symbols aren't available.

https://en.wikipedia.org/wiki/Real_number

Isn't it much more work to find those symbols and copy and paste them though?
More work for the author, but nicer for the reader, and makes it more self-explanatory which sets are meant. The latter is what I cared about.

Also, if you’re on desktop with a suitably configured Compose key, it’s actually simple to type (Compose I R for example), no need for copy&paste.

> Sorry, there is only one dimension of reality

I doubt it. I'm pretty sure whatever reality photons, black holes, etc are in, it's not really mine, except where it happens to slightly intersect with mine so I can detect it.

String theories give somewhere between 10 and 26 dimensions, depending on which one you like.
Have string theorists been able to find empirical evidence for any of those supposed dimensions?
String theory isn't yet reality, it's just a sometimes-useful thought experiment. Something doesn't become real until we can interact with it experimentally.
Things don't exist until their existence is discovered?
Independent of us, something may or may not exist, but until it can be interacted with, it is not real. It remains hypothetical. You can't do anything with it, only the idea of it is real.

(Edits to make my argument a bit less snarky.)

If it interacts with you but you don't realize it (say, radiation from uranium), is it real?

Where did you learn all of these things anyways, and which meaning of the word real are you working with?

Yes, radiation from uranium is real even if you don't realize it, because it causes measurable impact on our world. The definition of real I'm working with is an attempt to synthesize the demands of empiricist and rationalist epistemologies. While an objective world exists, it only matters insofar as we have access to it. Radiation is real because even if you don't know about it, it will kill you. Its existence affects what happens to us, and therefore it is a thing we can conceive of verifying experimentally.

String theory on the other hand operates at energy levels so small that it's completely inaccessible to us. A collider would have to be the size of the galaxy to probe the energy levels we're discussing. At the energy levels that govern on our lives and environment, quantum field theory doesn't require string theory to explain what's going on, and we would require godlike powers to approach testing it. This makes it very unreal. Not entirely unreal, and still important for understanding the corner cases, but it is about as ephemeral as it can get.

Something must not just be in principle falsifiable, but the means of falsifying it must be something we could possibly carry out. The more readily available those means, the more real a thing becomes.

"there is only one dimension of reality" - what do you mean by that?
What we see is only an interpretation of a reality we can never comprehend.
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One thing that really bothers me about HN is highly of opinionated comments that trash research but then make a bunch of unsourced anonymous claims themselves as if they authority figures on the matter.

You may be right, but give some evidence or references for your claims

Weird things happen when the mind contemplates the mind, it happens in every thread.
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i found this statement (fta)

''' Most doctors are taught and believe that the brain dies after about five or 10 minutes of oxygen deprivation,” Parnia said. “One of the key points that comes out of this study is that that is actually not true. Although the brain flatlines after the heart stops, and that happens within seconds, it doesn't mean that it's permanently damaged and [has] died. It's just hibernating. What we were able to show is that actually, the brain can respond and restore function again, even after an hour later, which opens up a whole window of opportunity for doctors to start new treatments. '''

quite remarkable.

They also do when taking psychoactive substances.
Besides the woo-ily worded stuff about dimensions of reality, this stands out:

>“Most doctors are taught and believe that the brain dies after about five or 10 minutes of oxygen deprivation,” Parnia said. “One of the key points that comes out of this study is that that is actually not true. Although the brain flatlines after the heart stops, and that happens within seconds, it doesn't mean that it's permanently damaged and [has] died. It's just hibernating. What we were able to show is that actually, the brain can respond and restore function again, even after an hour later, which opens up a whole window of opportunity for doctors to start new treatments.”

There's a paper from 2007 called "Brain Death - Too Flawed to Endure, Too Ingrained to Abandon" that gives a more sober overview of facts and beliefs around brain death in medicine.

For anyone interested in research surrounding death and near death experiences, check out "The Handbook of Near-Death Experiences: Thirty Years of Investigation"