Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror
Biotech

Uploading the Human Mind Could One Day Become a Reality, Predicts Neuroscientist (sciencealert.com) 96

A 15-year-old asked the question — receiving an answer from an associate professor of psychology at Georgia Institute of Technology. They write (on The Conversation) that "As a brain scientist who studies perception, I fully expect mind uploading to one day be a reality.

"But as of today, we're nowhere close..." Replicating all that complexity will be extraordinarily difficult. One requirement: The uploaded brain needs the same inputs it always had. In other words, the external world must be available to it. Even cloistered inside a computer, you would still need a simulation of your senses, a reproduction of the ability to see, hear, smell, touch, feel — as well as move, blink, detect your heart rate, set your circadian rhythm and do thousands of other things... For now, researchers don't have the computing power, much less the scientific knowledge, to perform such simulations.

The first task for a successful mind upload: Scanning, then mapping the complete 3D structure of the human brain. This requires the equivalent of an extraordinarily sophisticated MRI machine that could detail the brain in an advanced way. At the moment, scientists are only at the very early stages of brain mapping — which includes the entire brain of a fly and tiny portions of a mouse brain. In a few decades, a complete map of the human brain may be possible. Yet even capturing the identities of all 86 billion neurons, all smaller than a pinhead, plus their trillions of connections, still isn't enough. Uploading this information by itself into a computer won't accomplish much. That's because each neuron constantly adjusts its functioning, and that has to be modeled, too. It's hard to know how many levels down researchers must go to make the simulated brain work. Is it enough to stop at the molecular level? Right now, no one knows.

Knowing how the brain computes things might provide a shortcut. That would let researchers simulate only the essential parts of the brain, and not all biological idiosyncrasies. Here's another way: Replace the 86 billion real neurons with artificial ones, one at a time. That approach would make mind uploading much easier. Right now, though, scientists can't replace even a single real neuron with an artificial one. But keep in mind the pace of technology is accelerating exponentially. It's reasonable to expect spectacular improvements in computing power and artificial intelligence in the coming decades.

One other thing is certain: Mind uploading will certainly have no problem finding funding. Many billionaires appear glad to part with lots of their money for a shot at living forever. Although the challenges are enormous and the path forward uncertain, I believe that one day, mind uploading will be a reality.

"The most optimistic forecasts pinpoint the year 2045, only 20 years from now. Others say the end of this century.

"But in my mind, both of these predictions are probably too optimistic. I would be shocked if mind uploading works in the next 100 years.

"But it might happen in 200..."

Uploading the Human Mind Could One Day Become a Reality, Predicts Neuroscientist

Comments Filter:
  • by VaccinesCauseAdults ( 7114361 ) on Sunday June 01, 2025 @03:39PM (#65420831)
    The maths pedant in me would like to point out that every exponential function also accelerates exponentially. So the “accelerates” is redundant and “grows exponentially” is sufficient.

    As you were.

  • by gurps_npc ( 621217 ) on Sunday June 01, 2025 @03:42PM (#65420839) Homepage

    Step 1) Pick something from a movie/story that is fantastical.
    Step 2) Find someone with a degree that is either unethical or stupid enough to claim that it will be done 'in the future'.
    Step 3) Have the reporter pick a time in the future that seems reasonable to a layman.
    Step 4) Pretend you did not do any of the earlier steps.
    Step 5) PROFIT!

    Their description of 'uploading' says "replicating", which = a copy. If you copy a human mind, you are not being uploaded, you remain in your human body. At best they have cloned your mind into a robot. If they kill the original you, you still die - even if they do it just after the 'upload'. Do not let them copy you then murder you , even if the copy hides the fact that they murdered you. (AKA the Star Trek Transporter Problem).

    If you want to move your consciousness to a computer, you need a slow and steady partial replacement of bioware with hardware. Think "Ship of Theseus" methodology with long time periods - only replacing the organic parts with inorganic parts.

    That would actually let you upload. But this technology does not exist in any way shape or form. Neither the hardware nor a process to meld them with our existing bioware.

    • by marcle ( 1575627 )

      I definitely agree with the first part of what you said. There's an awful lot of hand-waving going on here. Trying to put a timeline on things that have yet to be discovered or invented is dumb, no matter what the credentials of the person making the claims.

      • A copy isnt you. You are not going to upload your brain to a computer and suddenly realize you are in a computer with the ability to think. Rather, the computer will mimic you. You will still be dead, to meet God or to stop existing, either way, not in a computer. The world may believe that is you, but it is not.
        • Depends on your definition of you.

          It is impossible for you, right now, to determine whether you are a copy of yourself yesterday or the same body. Hypothetically, your body could have been swapped when you were asleep. Intuitively and following your reasoning that swapping would have killed you, but from your perspective now, you are alive and you. Whether a copy or the original, your memories are the same, your thoughts are the same. You right now do not and can not ever know the difference. For all intent

    • Their description of 'uploading' says "replicating", which = a copy. If you copy a human mind, you are not being uploaded, you remain in your human body.

      Every upload of anything is a copy. If your mind were uploaded, then, yes, the original "organic" you would remain in your body. But if the machine to which the copy were uploaded to were able to "run" your mind (a big "if," granted), then there would be two of "you."

      • I will explain the "Ship of Theseus" method of uploading.

        Part 1) Ship of Theseus: Ship gets damaged over time, carpenter slowly replaces each damaged part. After X amount of time, the carpenter realizes he has replaced every single piece of wood in the ship. Questions: Is the current ship still the original? When did it change? If there was never damage, just weathering and the carpenter kept all original pieces and re-assembeled it, which would be the actual ship of Theseus?

        Part 2) How to actually up

        • I like this method a lot.

          • I have to say, great discussion.

            But I still prefer the biological method, the one that uses a hose to inject DNA carrying packets into an external factory method with self-assembly semantics. I've always thought it is more fun than carpentry, even if it is more error prone!

            YMMV

        • by piojo ( 995934 )

          That's such a seductive idea, but it has some assumptions baked into it about what consciousness (and self) are. Rather than try to pick it apart, let me suggest a fun alternative: put the brain and the computer in the same place (put the brain inside the computer processor or vice versa depending on size), wait for the brain to go to sleep, then wake up the computer.

          When the brain wakes up, it is now the copy. Oops.

        • Part 2 reminds me of Asimov's, "The Bicentennial Man" where a robot wanted to be a human.

        • Except you're conflating a brain with a mind. The ship example is an analog of brain cells. The upload in question is not uploading your brain cells, but your "mind," that is a snapshot of the state of all your brain cells, i.e., which cells are connected to which other cells, how strongly they are connected, and whether a given cell is firing (1, not 0). Hence, the ship example does not apply.
    • If you want to move your consciousness to a computer, you need a slow and steady partial replacement of bioware with hardware.

      I'd like to recommend the very thought-provoking short story Learning To Be Me [wikipedia.org], written by Australian writer Greg Egan (if you don't want spoilers, the Wikipedia article contains a plot summary). It's quite topical to this discussion, and also quite unsettling.

    • by ceoyoyo ( 59147 )

      If you copy a human mind, you are not being uploaded, you remain in your human body.

      You'd think someone posting on Slashdot would have done more uploading. Maybe you're more familiar with downloading? The original tends to remain. Otherwise things like Netflix would be *very* expensive.

    • by MrKaos ( 858439 )

      Step 1) Pick something from a story that is fantastical.

      Eon: Greg Bear.

      Each citizen carries a marble size computer in their skull as a backup of their mind. You get 2 "reincarnations" (IIRC) and on the third you are committed to The Thistledown's public memory where you become known as a "Ghost" who can still interact with corporeal city residents. Everyone knows if someone's body dies, you simply cut open the back of their skull and retrieve the backup so their body can be restored.

      Special Operatives of the city have additional devices where they can down

  • Look at where things have gone in the past 50 years. Much of the stuff we interact with on a routine basis today was science fiction in 1975.

    Internet. Cell phones/ Computer that actually talk and respond to voice commands. Self driving cars. All of the world's collected knowledge available in the palm of your hand, from pretty much anywhere you are.

    Artificial intelligence was only in apocalyptic movies until Chatgpt was announced (and, lets not kid anyone here), stunning the world with it capabilities

    • Oh, AI has been around a lot longer than ChatGTP. But ChatGTP represented an inflection point where the LLM technology was abruptly recognized as more important than it had been before. All of a sudden everyone's research projects graduated into full products.
      • "Full Products" is a misnomer.

        They believed that certain models would make money, and attempted to monetize them, which has been mildly successful.

        There are certain models with great degrees of accuracy, but aren't really designed as LLMs. Most LLMs are embryonic and are fraught, despite what the marketing prattle will tell you.

        There are a few LLMs that can accurately solve small problems consistently, and a few with what appears to be creativity.

        LLMs as a whole, however, can solve a few tasks with confiden

    • Our tech is impressive compared to the 1970's but it's still doing more or less the same functions, just faster and cheaper. AI is a very optimistic description, we're not anywhere close to human intelligence, just reproduced some of its fearures. That doesn't dismiss LLM as a useful cognitive tool, but it is still just a tool, as useless as a hammer without a human operator.

      • by ceoyoyo ( 59147 )

        The voltage clamp was invented in 1947, the microscope in sixteenth century and programmable computers, well, a long time ago. With those elements plus enough "faster and cheaper" you've got brain uploading.

        You need a lot of faster and cheaper though.

        • "Uploading Brain" what does that mean to you? I guess you mean upload your "mind" or do you mean consciousness. Brain, mind, consciousness are all subjects we know relatively little about, least of all how they relate and operate.

          You change your "mind" all the time, laying down new memories, learning new concepts, building new pathways even during the process of dying. If uploading a brain were remotely possible after a 1000 years of research, you would only get a photo of the state up to the point of tim

          • Essentially a virtual machine; a software implementation that mimics the hardware and "software" of the human brain within a digital space. Now of course that is currently impossible, and a large part of why is that many aspects of the human brain are still a black box to us. It is possible that some day we will not only understand every complex chemical and electrical interaction within the human brain down to the atomic level, but we'll also be able to emulate it digitally. If we were to reach that point,
          • by ceoyoyo ( 59147 )

            If it's magic then we're SOL. I don't see much point in considering that possibility. It's not interesting.

    • by q_e_t ( 5104099 )

      Artificial intelligence was only in apocalyptic movies until Chatgpt was announced, stunning the world with it capabilities less than three years ago.

      It's been around for a lot longer than that. How do you think face recognition on your phone works, for example? Or self-driving cars. And it pre-dated that. AI isn't all LLMs. And the work underpinning LLMs goes back decades too. It's just more ubiquitous now as the research has moved on but also the hardware on which to run it. When I was working in AI the paucity of hardware compared to our ambitions was a huge limiting factor.

  • upload them to war bots that can be on real battle battlefield.

  • Fucking Bullshit (Score:5, Insightful)

    by Artem S. Tashkinov ( 764309 ) on Sunday June 01, 2025 @03:53PM (#65420857) Homepage

    We've had the full wiring diagram of C. elegans -- all 302 -- for decades. Still can't predict its behavior. But hey, who needs details when you're uploading 86 billion human neurons? Neural lace, brain emulation, consciousness on a chip -- so close, just a few Nobel Prizes away.

    You could argue that we don't need to understand the brain in order to emulate it. That may be true, but does that mean we have to emulate neurotransmitter states? Dendritic potentials? Local field dynamics? Epigenetic states? Membrane lipid configurations? Where do we draw the line? If we go deep enough, not even all the compute power in the world would be enough to emulate a single human brain in real time.

    The human brain is the most complex known structure in the observable universe. It is probably more complex than the underlying physics and the grand unified theory of this world, if such a theory exists.

    • The human brain is the most complex known structure in the observable universe.

      And yet we kill them almost entirely without thought.. "I want what you have and am willing to kill you for it." "You think differently than I do which makes me want to kill you."

  • Thou shalt not make a machine in the likeness of a human mind.

    Thou shalt not disfigure the soul.

  • Something I read today, from a review in Nature of a book on Space Rockets by Hermann Oberth:

    "A voyage to the moon would be an atractive trip to many adventurous spirits, and in these days of unprecedented achievements one cannot venture to suggest that even Herr Oberth's ambitious scheme may not be realized before the human race is extinct."

    That was written in 1924. 45 years later, man was on the moon.
    • by Entrope ( 68843 )

      Similarly, in October 1903, an editorial in the New York Times claimed it would take between one and ten million years for humans to develop heavier-than-air machines that could fly. The Wright Brothers proved that wrong just under ten weeks later.

      https://en.wikipedia.org/wiki/... [wikipedia.org]

  • Is it reality or does it just describe reality?
  • by SlashbotAgent ( 6477336 ) on Sunday June 01, 2025 @04:20PM (#65420893)

    I'd prefer mind downloading. That is the ability to directly download into my brain knowledge, perhaps even skills.

    Some might say that we already have this. Technically watching a YouTube video could qualify for this. But it's far far slower than I'd like. I want to spend a few hours downloading Wikipedia into my brain so that I can conquer my world tomorrow.

  • by dsgrntlxmply ( 610492 ) on Sunday June 01, 2025 @04:48PM (#65420941)
    Natalie Wood's last movie: Brainstorm [youtu.be]
  • ;or, Dodge in Hell (Neal Stephenson)
  • I fully expect mind uploading to one day be a reality.

    The mind is made up of both the wetware and its state. Making a copy of both means both making a physical copy of the brain, and also somehow copying state from the source brain to the target brain.

    If you built a machine and uploaded the same state to it, it still wouldn't be a brain.

  • That's why I don't buy the argument that cryogenics is a con because neurons get too damaged to ever work again. Just scan and simulate.

    So the wealthy don't need scientists to get a move on. But they do risk being revived into a "I Have No Mouth, and I Must Scream" dystopia.

    • by q_e_t ( 5104099 )
      So you die, but a copy of you survives. You are still dead. It makes you as alive as, say, a dire wolf from 10,000 years ago if you genetically manipulate a modern wolf to be a bit like a dire wolf.
      • by Mandrel ( 765308 )
        I see no good reason that the consciousness gap of a deep sleep and the same before revival as a simulation has to feel different.
  • 640k ought to be enough for anyone
  • Why not grow a new brain and body. I'd wager a decent AI could assist with a business plan. This almost sounds like a lot of movies.

  • We famously don't know what we don't know when it comes to the human brain, so any prediction is more a thing of fairy tales than anything actually based in reality.

  • You don't need to simulate all that, at least initially. Scan in the brains of people who are at extremely high risk of stroke or other brain damage. If one of them suffers a lethal stroke, but their body is otherwise fine, you HAVE a full set of senses. You just need to install a way of multiplexing/demultiplexing the data from those senses and muscles, and have a radio feed - WiFi 7 should have adequate capacity.

    Yes, this is very scifiish, but at this point, so is scanning in a whole brain. If you have th

  • by Z80a ( 971949 ) on Sunday June 01, 2025 @09:42PM (#65421301)

    If you have your brain scanned and emulated on a zsbrain, you and the zsbrain will exist at the same time.
    So you don't "get to live forever", the zsbrain does.

  • Maybe we could make a map and upload a human brain, but why? If we can design a system that produces consciousness, why would we want to put such a crappy representation on it? Build something with actual intelligent design, and try to get rid of some the fatal, glaring flaws we see in ourselves.
  • For anyone who hasn't read the Bobiverse books by Dennis Taylor, this is the main premise. Great series!
  • It seems mistaken to just blithely assume that technology will obviously just progress harder until a solution is reached.

    When you talk about simulating something you are expressing an opinion on how much power you'll have to throw at the problem; but, more fundamentally, you are expressing optimism about the existence of a model of the system that delivers useful savings over the actual system without too much violence to the outcome.

    Sometimes this is true and you can achieve downright ludicrous savi
  • With what we've recently seen with 23andme. I don't know who in their right mind would do this till there are appropriate privacy and data ownership laws. As it stands now who owns this copy of your brain? You or the company that made the copy?
    • by MikeS2k ( 589190 )

      Yes some website leaks a copy of your conscious mindstate onto the darkweb, and now millions of teenagers bored at cyber school torment copies of your mindstate in a flash game type sim. You go for your brain scan/upload and as soon as the scanning helmet comes off, you are suddenly in a grim dungeon with a chainsaw floating up and towards you.
      Or it ends up like the Voyager episode with the psycho clown. Think I might give it a miss

  • ... predicts farmer.
  • You die. The copied brain lives on. It's not you, it's a copy. You're still dead. Stupid idea.
  • by rklrkl ( 554527 ) on Monday June 02, 2025 @08:18AM (#65421743) Homepage

    The recent TV series "Upload" already did this: https://en.wikipedia.org/wiki/... [wikipedia.org] - I quite enjoyed the show and it's been renewed for a 4th and final season. Minds were uploaded to a virtual reality scenario and could later then be downloaded (it happened to a clone of the main character's body) with, yes, both versions active at the same time.

    • It seems like at least a quarter of the episodes of Black Mirror have consciousness uploading of some sort as a plot device.

  • by Tom ( 822 )

    I wish, but nah, this is pure SciFi.

    Why? Because it's not all in the brain. The brain is connected to the entire nervous system. The "mind-body duality" doesn't exist. You're not a mind that has a body, you're a body that has a mind. We know that the body can survive without the mind (coma patients, some extreme cases of mental or debilitating illness, etc.) - but there isn't one case of a mind without a body.

    Even if you could upload yourself to a supercomputer with the same processing power as your brain,

  • But.. that wouldn't be me. That would be a perfect copy of me at the time of the copy. So 2 me would exist: the copy and the biological one.

  • Even if we managed to be able to scan the human brain to the point that we could replicate all memories and functionality, you'd almost certainly end up with an only loose approximation of a biological brain.

    Much of what the brain does likely depends on things happening at the quantum level that simply can't happen the same way if a brain were "run" on silicon instead of neurons. We could attempt to use software to make it behave similar to a real brain, but you could never reproduce all of conditions in th

In the realm of scientific observation, luck is granted only to those who are prepared. - Louis Pasteur

Working...