Not alive, but not dead: disembodied human brains used for drug testing

3 hours ago (science.org)

Live dissection and experimentation on “alive but drugged” human brains is mental. How do you ensure that you aren’t torturing a brain that can’t see, hear or scream? How are you held accountable?

  • When I had my ear surgery about 20 years ago, the doctor explained to me that I would be awake for part of the procedure, but the anesthesia meant that I would have no memory of it.¹ It’s a weird thing to think about whether that lack of memory would obviate the pain or discomfort of the moment.

    1. As it turned out, I was so frightened in the lead-up to the surgery that they had to do general anesthesia on me because I was shaking too much for them to operate so I was unconscious for the whole thing.

    • Purely anecdotal, but I had surgery a few years ago (relatively minor). But I could feel for months after a sort of 'unconscious PSTD' I don't know how else to describe it. Even after it was healed and the pain was gone, there was just a deep sense of 'something bad happened in there' feeling. I'd have dreams of someone digging around in my body. Anyway, it's all gone now, but a weird experience for sure.

    • I had the same thoughts "but won't i feel it THEN?" when I was getting an upper endoscopy. The anesthesiologist said you're in such a trance, dreamlike state plus with the inability to form memories its like you're not your real "consciousness" but something different. Sort of like your brain is in "limp mode" and its not really _you._ This was both comforting and slightly terrifying in a different way.

    • > so I was unconscious for the whole thing

      Or so they claim - the patient would have no memory of that anyway.

  • From the article:

    > The brains are already almost devoid of the coordinated neural firing necessary even for minimal consciousness, says Brendan Parent, a bioethicist at New York University Langone Health and one of six ethicists on Bexorg’s advisory board. But the company also forestalls any electrical activity with the anesthetic propofol, among other measures.

    • I don't trust them to always give the brain propofol. The subject has no way of reacting because they have no body, so what are they going to do?

    • I recognized that anesthetic from its famous irresponsible use-

      "Attention to the risks of off-label use of propofol increased in August 2009, after the release of the Los Angeles County coroner's report that musician Michael Jackson was killed by a mixture of propofol and the benzodiazepine drugs lorazepam, midazolam, and diazepam on 25 June 2009." https://en.wikipedia.org/wiki/Propofol

      Used properly, however:

      "To induce general anesthesia, propofol is the drug used almost exclusively, having largely replaced sodium thiopental."

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  • It's still an open debate whether the seat of consciousness (or even simpler, perception) is the brain.

    see e.g. Wahbeh, H., Radin, D., Cannard, C., & Delorme, A. (2022). What if consciousness is not an emergent property of the brain? Observational and empirical challenges to materialistic models. Frontiers in psychology, 13, 955594. https://doi.org/10.3389/fpsyg.2022.955594

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

    Same for memory, which is "needed" as well for your question to make sense. The more current theories assume memories are stored not only in the brain, but throughout the body.

    see e.g. Repetto, C., & Riva, G. (2023). The neuroscience of body memory: Recent findings and conceptual advances. EXCLI journal, 22, 191–206. https://doi.org/10.17179/excli2023-5877

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

    • I believe to some extent that everything is conscious and that it's specifically our species' prized mental features that lessen it's level at least temporarily. purely esoterically the statement "a rock is more conscious than a human being" doesn't even seem too outrageous to me.

    • Ok, I only skimmed the paper but it seems like all of the "non-local phenomena" in support of their theory are basically psychic powers. Not exactly strong evidence.

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  • > Live dissection and experimentation on “alive but drugged” human brains is mental.

    There’s no such thing as live dissection. It’s vivisection.

  • Well, we know how to make living brains insensate - that's who we all make it through surgery.

    Presumably they're doing something similar - or using some other well-understood mechanism - to ensure that's not the case.

    > The brains are already almost devoid of the coordinated neural firing necessary even for minimal consciousness, says Brendan Parent, a bioethicist at New York University Langone Health and one of six ethicists on Bexorg’s advisory board. But the company also forestalls any electrical activity with the anesthetic propofol, among other measures. Bexorg obtains brains in partnership with organizations that procure donated organs for transplantation, and Vrselja says once families understand the company’s process and goals, their response is overwhelmingly positive.

    • That’s somewhat overstated.

      We know anesthesia "works," and we know some of its molecular targets, but we do not fully know the mechanism by which it produces unconsciousness, ie whether anesthesia eliminates experience, or mainly blocks memory, report, and integrated neural processing.

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    • My understanding was that we now believe that patients under anesthesia are often "awake" but the drugs prevent them from forming memories so they can't complain once the anesthesia wears off.

      Is that incorrect?

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  • It's not a great article, and it glosses over the reality that if you hooked this brain up to an EEG it would show unequivocal brain death. CELLS of the brain are alive, but in terms of being able to function in any sort of coordinated way there that ship sailed minutes after the person who donated their organs died. The wave of depolarization that marks brain death isn't something we can reverse, and what's being done here is all about metabolism and structure rather than those much more subtle functions.

    IMO the more questionable aspect of this entire operation is the use of "AI" to reach conclusions about how the test molecules are being metabolized, but that's a lot less compelling than implying that some company is somehow preserving life in a disembodied brain.

  • The word "alive" is doing a lot of work here. A brain is pretty much permanently fried after five to fifteen minutes without oxygen, and these are donor brains, not some emergency brain extraction team, so the timeframe will be much longer than that. There might be 'life' left in there in the technical sense, but there's no 'person' left.

  • I’ll volunteer to waive my rights here. Feel free to do whatever you wish with my brain once it’s detached from my body :)

    Can’t be worse than my organs being harvested for donation.

  • Brain does not have physical feelings, and with all other feelings cut off and not possible, even with consciousness it won’t be a horror scenario like in MetallicA’s “One”.

    • People go crazy in solitary confinement, and they at least have senses left. I’m not sure I’m as confident as you on this one.

“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 Activity recorded M.Y. 2302.22467 (TERMINATION OF SPECIMEN ADVISED)

  • Give credit where credit is due: Descartes, Kant, Putnam, etc.

    • Meditations on First Philosophy messed me up bad. All of Descartes’ reasoning about the inability to determine whether experience was real made complete sense to me. But when I got to where he started to try to build back reality, I didn’t buy it. I can only believe in reality by willfully forgetting Descartes.

I just finished reading "That Hideous Strength" (CS Lewis) this weekend where they have a disembodied head kept "alive", and some convicts in the pipeline whose heads/brains, it is implied, will be experimented on similarly. Lewis was remarkably prophetic.

This makes me feel physically ill. It's like something straight out of a sci-fi dystopia, how did this get approved? Who determined that reinjecting biological activity into a human brain is definitely not some form of reanimation? If they're using heavy sedation to prevent electrical activity, is that not tacit admission they're not 100% sure that consciousness might return otherwise? How did this pass ethics review, or did they even bother?

  • Dude we can't revive brains minutes after cardiac arrest, when they're inside their bodies, even when we're TRYING TO DO SO. You can think about "what if" if you like the though experiment, but seriously arguing that there's any way that brains could recover consciousness the next day because you gave them nutrients is like arguing that voyager could crash back on earth and injure someone after being flung backwards around a loose interstellar body.

I will be removing my organ donor status. This is horrifying.

  • It looks like the families have to agree to do this, before your brain can be donated:

    > Bexorg obtains brains in partnership with organizations that procure donated organs for transplantation, and Vrselja says once families understand the company’s process and goals, their response is overwhelmingly positive.

NEW VISTA, OUTER RIM—Just a cycle ago, the brain was in a living person. Now, hours after its first owner died, it sits on a slab draped in tubes that quiver as they pump liters of blood substitute and other fluids through the organ, supplying oxygen and removing waste. As far as anyone knows, with many of its key functions intact but maybe awarness muffled by drugs, the brain hovers between life and death. As people subject it to experimental drugs, sensors record the brain's reactions, capturing hundreds of data points on its cells, proteins, and physiology. Then, after 24 hours in this state, it will be sliced into hundreds of pieces for more detailed study.

"alive" is not a meaningful term. It makes sense only when you have blunt instruments to measure aliveness, like pulse, respiration, heart beat, etc.

Once you go much more granular, there's no particular spot to make a distinction between "alive" and "not alive", until you stop seeing any electrical, biochemical and mechanical activity of any kind, at which point you're basically saying "inert".

  • Is this dry humor and/or a deliberate attempt to make the reader even more horrified by the experiment? Or only a different sensibility from mine? No judgement. I just really can't tell.

  • With what we are learning about how gut flora, can a brain be considered conscious while detached from the digestive system?

Let me add Johnny Got His Gun to the surprisingly large number of works that seem to anticipate exactly this premise.

The obvious question I would have asked: given the concern that this may not be ethical if the brains are still “alive” AND the concern that a brain separated from the body probably doesn’t function these same, why wouldn’t we test things in living monkeys (instead of mice)???

It seems that the likelihood is high that the right animal model would yield superior data???

To be honest, if my only other option was to be buried, I would love to let my brain be connected to some machine that try to keep it as alive-like as possible.

Just please don't remove my brain before I'm 1000% certainly dead.

  • This is precisely why I've never been interested in being an organ donor.

    I don't remember where specifically I learned this, but I was taught that tissue has to be alive to be useful, so they harvest it when you're almost-dead. Having my last moments be literally dismembered is not something I wish for my future self.

  • To some extent, volunteering for any sort of medical study is signing up to be tortured in the hopes that someone down the line might be saved by the research. Most cancer treatments, for instance, are objectively terrible to go through, and when you're testing and developing the protocols you're pumping already sick people full of poisons and hoping for the best.

    There's some fraction of people who would prefer to be kept alive as a brain in a jar, depending on the alternatives, but getting to that point is going to require a bunch of people to volunteer to undergo excruciating torture as we learn how to keep the brain alive, how to keep them comfortable, how to keep them conscious, sane and let them interact with the world.