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Pig brains partially revived four hours after death

bbc.co.uk

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Re: Pig brains partially revived four hours after death

#171
post #23

Imagine donating your body to science and then waking up in a lab as a brain in a vat. "A Living Soul" by P. C. Jersild is amazing sci-fi book exploring this. https://www.amazon.com/Living-Norvik-Press-English-Swedish/d... https://en.wikipedia.org/wiki/P._C._Jersild

It would be like a sleep paralysis you could not wake from. The stuff of nightmares.

Re: Pig brains partially revived four hours after death

#172
post #27
post #23

Imagine donating your body to science and then waking up in a lab as a brain in a vat. "A Living Soul" by P. C. Jersild is amazing sci-fi book exploring this. https://www.amazon.com/Living-Norvik-Press-English-Swedish/d... https://en.wikipedia.org/wiki/P._C._Jersild

“We are all aware that the senses can be deceived, the eyes fooled. But how can we be sure our senses are not being deceived at any particular time, or even all the time? Might I just be a brain in a tank somewhere, tricked all my life into believing in the events of this world by some insane computer? And does my life gain or lose meaning based on my reaction to such solipsism?” - Project PYRRHO, Specimen 46, Vat 7…

For the curious, the quotation is from the amazing 1999 PC game, "Sid Meier's Alpha Centauri."

This game was a treasure trove of thought-provoking quotations, many of which can be found on WikiQuote. [1]

[1] https://en.wikiquote.org/wiki/Sid_Meier%27s_Alpha_Centauri

Re: Pig brains partially revived four hours after death

#173

Earlier quoted context omitted.

After living a full life? Probably?

I don't think you're appreciating what it would be like. Sure, at first, the peacefulness of absolute sensory deprivation would probably feel pretty relaxing. But then, it never ends. An eternity (or as long as your brain was kept alive) of nothing. You see nothing. You hear nothing. You feel, taste, and smell nothing. If you're lucky, you'd start building a fake reality to imagine yourself in, like a dream. Over tim…

I put my money on the brain adapting to the absence of those inputs.

Re: Pig brains partially revived four hours after death

#174
post #27

Earlier quoted context omitted.

“We are all aware that the senses can be deceived, the eyes fooled. But how can we be sure our senses are not being deceived at any particular time, or even all the time? Might I just be a brain in a tank somewhere, tricked all my life into believing in the events of this world by some insane computer? And does my life gain or lose meaning based on my reaction to such solipsism?” - Project PYRRHO, Specimen 46, Vat 7…

That's the justification I give when my boss says my code is shit.

Code monkey think maybe manager want to write goddamn login page himself

Code monkey not say this out loud

Code monkey not crazy, just proud

Re: Pig brains partially revived four hours after death

#175
post #53

>a specially designed liquid round the brain, which contained a synthetic blood to carry oxygen and drugs to slow or reverse the death of brain cells. I had no idea humanity achieved synthetic blood. This is from the study: >a haemoglobin-based, acellular, non-coagulative, echogenic, and cytoprotective perfusate that promotes recovery from anoxia Am I the only one excited by what viable synthetic blood might mean for…

Don't get your hopes up. I worked in a neurology lab where they used something similar years ago. You could keep a pig / rat brain running for a few hours like this, but it would start to fall apart in other ways pretty fast.

Is this study then representative with this synthetic blood?

Re: Pig brains partially revived four hours after death

#176
post #153

Earlier quoted context omitted.

Option 3: the experience of being disconnected from your body is so distressing that you can do nothing but attempt (and fail) to scream. The scientists have no idea you are in distress. This goes on for months or years. By the time technology develops to a point where they can communicate with you, you are irreparably broken.

In all cases i would not lose anything, because i would have already lost everything when dying. So in all cases it's a bonus time, and though being properly resurrected would be great, helping scientific progress and dying is still better than simply dying.

That's very optimistic of you. I can definitely think of a few situations in which I would be better off without that "bonus time". I'm not sure we have enough information to know how a brain would perceive being activated but without most it's sensory organs and the busy it was grown in. If you're used for experimentation before they have a way to communicate, stuck in void with only yourself for company is really a best case scenario.

It's sort of like being given a choice at the time of death. Would you rather everything ended now, or do you want to opt for a small chance at future life if there's also a chance that life consists entirely of torture of one type or another.

Re: Pig brains partially revived four hours after death

#177

Earlier quoted context omitted.

After living a full life? Probably?

I don't think you're appreciating what it would be like. Sure, at first, the peacefulness of absolute sensory deprivation would probably feel pretty relaxing. But then, it never ends. An eternity (or as long as your brain was kept alive) of nothing. You see nothing. You hear nothing. You feel, taste, and smell nothing. If you're lucky, you'd start building a fake reality to imagine yourself in, like a dream. Over tim…

I thought maybe looking into how people in comas experience their time, but apparently it's common for them to have experienced much of what happened around them as a hazy dream[1], which means a lot of sensory input was still being processed. I'm not sure what it would be like to actually lose all sensory input. There's probably some disease that causes this, so maybe I'll stumble on it eventually, but even then we'll only get answers at this point if it's reversible...

1: https://www.quora.com/What-was-it-like-for-you-to-awaken-aft...

Re: Pig brains partially revived four hours after death

#178

Throwing it out there—when I'm dead, you are totally allowed to resuscitate my brain. Better than being dead. Please make sure I am supplied with some good books to read, if at all possible.

I’m sorry but this feels like an ignorant view. Brain relies on sensory information coming from inside the body - hunger, bodily awareness, skin temperature, etc.

Without these signals, we have no clue whether you’ll be in immense confusion, anxiety, sadness or bliss. It could very well be much worse than death,

Are you ok with that gamble?

Re: Pig brains partially revived four hours after death

#179

Freezing your head might be good idea. If one day you could simulate a braina and scan a brain in sufficient detail just freezing might be enough to keep sufficient detail. Who you are must be in chemistry of your brain not in the electricity because you are same person after epileptic seizure as before.

This presumes that you are the same person after a seizure, or even after a nap, or even after half a minute of ordinary life, or even a unitary "person" to begin with.

That's a philosophical question (i.e. useless).

You are same enough for practical purposes like holding relationships and retaining knowledge and skills.

Re: Pig brains partially revived four hours after death

#180

Earlier quoted context omitted.

Couldn't they monitor brain activity for common pain modalities?

They currently ignore them. Not talking fantasy. When beating heart corpses (technically brain dead but body is alive) have their organs removed, in some cases the bodies go through symptoms of a live human being killed by vivisection. These are generally ignored. Let's hope our understanding of brain death is fully and completely correct.

What sort of symptoms are we talking here? There's rather a marked difference between "screaming loudly" and "bleeding" as an indicator of pain.
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