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Effort to Create Virtual Brain Begins

bryan8m writes "An IBM supercomputer running on 22.8 teraflops of processing power will be involved in an effort to create the first computer simulation of the entire human brain. From the article: 'The hope is that the virtual brain will help shed light on some aspects of human cognition, such as perception, memory and perhaps even consciousness.' It should also help us understand brain malfunctions and 'observe the electrical code our brains use to represent the world.'"

23 of 454 comments (clear)

  1. Thoughts on virtual thoughts by IO+ERROR · · Score: 5, Insightful
    All it takes to simulate a human brain is 22.8 teraflops? I thought I was smarter than that.

    Seriously, they expect it to take a decade to complete. By 2015, we could probably get processors with that kind of power from the local computer store. Then everyone could have their own virtual brain...wait, are they going to GPL this?

    So what happens if this thing develops a consciousness?

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    1. Re:Thoughts on virtual thoughts by /ASCII · · Score: 1, Insightful

      We do not have the computing power or the bandwidth to simulate human thought. Not to mention the fact that we don't really understand how the neutrons of our brain connect and interact to form intelligent thought. The article is somewhat sensationalistic.

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    2. Re:Thoughts on virtual thoughts by Anonymous Coward · · Score: 2, Insightful
      All it takes to simulate a human brain is 22.8 teraflops? I thought I was smarter than that.

      TFA does mention mouse brain, and human only as the goal in 2015... plenty of time to increase the flops.

    3. Re:Thoughts on virtual thoughts by icejai · · Score: 2, Insightful

      I agree, 22.8 teraflops is waaaay not enough.

      But if a cpu in 2015 can simulate 100 billion neurons sending signals to each other a couple hundred times a second over 100 trillion morphing connections asynchronously ... sign me up!

    4. Re:Thoughts on virtual thoughts by Bones3D_mac · · Score: 3, Insightful

      I'm more worried about how long it'll take for this thing to get bored, once it reaches that state. If they are going for the full human experience, how are they going to prevent sensory deprivation?

      Will they use some kind of skin grafting onto a chip to let it "feel" things using the nerves in it, instead of simply simulating it with pressure/temperature sensors?

      And what of other stuff like taste and smell?

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    5. Re:Thoughts on virtual thoughts by nickco3 · · Score: 2, Insightful

      So what happens if this thing develops a consciousness?

      How would you tell? Seriously. It's not like you can just stick a ruler in and measure the length of the consciousness gland.

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    6. Re:Thoughts on virtual thoughts by smallfries · · Score: 3, Insightful

      Hold yer horses there laddie.

      A neuron is *very* simple. Maybe just a sigmoid function over a sum. If thing actually is doing 22.8 terraflops (unlikely, I'm guessing that's the theoretical peak for the machine) then that gives 228 instructions per neuron. That is in the right range for operation.

      There are not 'morphing' connections, they tend to mostly stabilize within the first few years of life. I can't remember the figure, its maybe on the order of a 1000 connections per neuron, so 228 floating point operations couldn't do this in real-time --- but who says it has to run realtime? Even at 1/10 speed this would useful.

      I think the bigger problem isn't the processing power --- it's how you wire that network up. At the moment nobody has any idea how a brain is wired at the neural level. Imaging techniques just aren't accurate enough to tell us this. Getting your simulation to actually simulate a realistic brain would be an awesome challenge.

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    7. Re:Thoughts on virtual thoughts by ThePromenader · · Score: 2, Insightful

      I don't think it's the power we've got wrong: It's the architecture. No matter the size of the database or the speed of the transfer, if you pump it all through a limited X number of processors you won't have anything resembling the human brain. Granted we don't know exactly where it happens (or what directs them), but it seems that we have hundreds of thousands (voir millions) of simultanious synapses with every change of task or situation.

      In this light, one could almost consider a search engine's racks and racks of linked compters as the closest thing existing to the human brain.

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    8. Re:Thoughts on virtual thoughts by SpinyNorman · · Score: 2, Insightful

      It's meaningless to guess how many OPS/FLOPS it's take to simulate a human brain (or any other physical object) without stating what type of simulation you're talking about. In the case of a brain, a molecular simulation is going to take many orders more OPS/FLOPS than a neuron-by-neuron simulation, whcih would in turn take many orders more OPS/FLOPS than a neural assembly (e.g. cortical microcolumn) simultion, etc, etc. If we actually knew how the brain functioned in high level terms, then we could perform a behavioral simulation which would be most OP/FLOP efficient of all, and could likely be well within reach even today.

    9. Re:Thoughts on virtual thoughts by Anonymous Coward · · Score: 1, Insightful

      Henry is doing it for the money, and to make the headlines. He's way out of his league talking about AI though. His studies have involved patching two neurons and studying their connections - all local operations, within a few hundred microns. His studies have shed little light on connectivity across distances longer than that.

      Big Blue is involved because there is gonna be BIG money in AI that comes from understanding of how the brain computes. And because Henry is a reasonably good salesman.

      And none of this will actually come even reasonably close to simulating a brain in the form of artificial intelligence. There are SOME local learning rules, but there are important neural networks learning rules that are distinctly non-local.

      Also, spike timing dependent plasticity has not been confirmed in vivo. Just in slice. And a significant number of people are bashing their heads against the wall trying to find it, including Henry's former advisor and Nobel Laureate Bert.

  2. Obligatory... by ArbiterOne · · Score: 3, Insightful

    "We marveled at our own magnificence as we gave birth- to A.I."

  3. Obligatory HAL quote by harlemjoe · · Score: 4, Insightful

    "without your space helmet Dave, you're going to find that rather difficult"

    2001

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  4. What if the simulated brain is a person? by Anonymous Coward · · Score: 2, Insightful

    When started they'll have to keep the simulation going or else they'll kill him/her/ver! :(

    1. Re:What if the simulated brain is a person? by Vo0k · · Score: 3, Insightful

      A valid moral question.
      Luckily the situation is more convenient. Call something like "suspend to disk", backup the whole state and you have the equivalent of hibernation. Can be "defrozen" and brought back to life anytime.

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  5. Brain != Thinking by arstchnca · · Score: 3, Insightful

    For those who don't feel up to actually reading an article, the Blue Brain project does not intend to create artificial intelligence, but rather a replication of the physical side of the human mind - the brain. The 22.8 teraflops mentioned in the summary are going to be used to manage a database of "neural architecture." The whole project has little, if anything, to do with concsiousness.

    As of this posting, there have been several "what if" posts about the project accidentally leading to the creation of artificial intelligence. Systems such as the fictitious Skynet will not rival the flexibility and depth of a single human mind until we fully understand the mind ourself. Lisa Fittipaldi, an astonishingly talented painter, is able to create beautiful scenes on what was once a blank canvas. At the same time, Ms. Fittipaldi is unable to paint an accurate portrait - she is blind.

    We can only recreate what we understand.

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    -- arstchnca
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  6. Wishful thinking by bloodredsun · · Score: 5, Insightful

    As someone who's spent many years as a neurophysiology researcher before becoming a programmer I feel I may have a bit more insight than the average person. What this project boils down to is a simplistic model of the simplist unit of operation of one area of the brain (neocortical column). Anyone who has followed research into areas such as epilepsy and memory will know of the massive gaps in our understanding of the realtionship of the brain and the mind. So this "first computer simulation of the entire human brain" is neither accurate in the sense that they are not simulating the human brain, nor are they the first to try what they are attempting. They only difference here is that they have the very public backing of a major corporation who understand the benefit of good publicity.

    This sort of research is fascinating and despetately needs to be done, but it does no one any favours when people associate tabloid style headlines to it. The days when we wear Richard Morgan style "stacks" are still as far away as ever unfortunately.

    1. Re:Wishful thinking by markandrew · · Score: 3, Insightful

      my thoughts exactly; it may be a few years since i studied neural networks at university, but unless someone has sneakily made a quantum leap forward, any claims of simulating entire brains or creating self-aware computers is still science fiction.

      it constantly amazes me that people still assume that once a certain amount of computing 'power' is available, a computer could suddenly become sentient, as if someone just flicked a switch.

      we don't even know what sentience and consciousness really mean ourselves, and we've been trying to find out for centuries. as the parent poster said, we don't even understand everything about our own brains yet (and we're not that close, either), so claims of artificial life forms suddenly springing up after a few years of adding teraflops here and there are way off the mark.

      we could create a machine which could count all the atoms in all the stars in the universe (every universe, if you believe in multiple ones) in a nanosecond, while simultaneously predicting every person's actions for the rest of time, but we'd still be no closer to a self-aware life form.

      and even if we *did* create one, how could we tell if it was really 'alive', or just a brilliant simulation? the answer is, at the moment, that we wouldn't even be able to tell.

  7. Re:Umm... by Stepping+Razor · · Score: 2, Insightful

    whoooosh! (joke flies over head)

  8. Re:What if it works? by CmdrGravy · · Score: 2, Insightful

    I expect that until such a being can enforce it's wishes not to be terminated in some way we will be free to turn it off whenever we like.

  9. Re:Consciousness by FirienFirien · · Score: 3, Insightful

    Zero evidence, yes. But we're looking to define the difference between a system that is alive (as we define ourselves to be) and one that is merely responsive. If you create a replica that works, at some point you cross the boundary that people define as unlife to life; and as logical and scientific we want to be about it, there will be those who consider it an aberration and will rise against it. The question will come of whether a soul is being made, whether it's founded or unfounded, evidence or not.

    I've tried to keep the following part objective. It is not intended as a troll. Please read it objectively, and consider as part of a discussion over brain simulation and its repercussions rather than about religion. I believe what I believe, you believe what you believe.

    I consider there to be no evidence - as such - for religion. Christians point to the bible, others to their own spiritual texts, but I'm quite cynical about the whole thing because there's no manifest evidence. But I don't go out and try to convince them that it's untrue, because I also don't have evidence to the contrary, and I'm also not fussed enough to feel an urge to bring people round to my way of thinking on that. However, as seen over and over (crusades, holy wars, jihads... the list goes on) the percieved insults against a religion are, often enough, responded to with force. US currency and (I think) the White House sigil bears the words "In God We Trust", even though the state is nominally unaffiliated with a religion; can you think of what would happen if it was motioned to be changed? Enough of the US population *believes* it enough that there would be outrage.

    These same people believe that the creation of life, of soul, is for their God alone, and creation of new life by humans (other than the conventional way ;P ) would be blasphemous, arrogant against God, etc etc. This is the kind of thing that gets ranted about in churches. Whether or not there is "evidence" for it, to enough people it matters.

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  10. Re:What if it works? by Kiryat+Malachi · · Score: 2, Insightful

    Well, considering we won't let humans do that...

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  11. This research is probably not theory-driven. by Futurepower(R) · · Score: 2, Insightful


    My guess is that the Business Week article linked in the parent comment is better than the New Scientist article at explaining the researcher's intentions. Here's a quote from the Business Week article: "The Blue Brain Project will search for novel insights into how humans think and remember."

    If you've been around scientific research, it is not difficult to understand that this research has little chance of producing anything valuable.

    There are several reasons:

    1) The research is equivalent to trying to understand how a computer operates without understanding the programming of the computer.

    2) The quote from the Business Week article above is probably unintentionally accurate. Probably the Business Week writer interviewed someone from the lab, and that person, not being as skilled as the New Scientist writer at hiding the truth, revealed what they actually are doing. Probably the Business Week writer did not understand the significance of what he wrote, but just thought it was an interesting quote.

    The significance of "search for novel insights" is that they do not intend to do theory-driven science. In theory-driven science, you have novel insights before you do an experiment. Otherwise, as thousands of years of human history have proven, investigation is mostly a waste of time.

    Instead, the researchers will just do the "scientific" equivalent of playing.

    3) Researchers found in the early 70's that research proposals that promised a better understanding of the brain or intelligence would get funded. The research that is actually done is research that is funded, not necessarily research that is useful.

    They found that brain and intelligence research would be funded, but there was a problem. It was, and is, extremely difficult to do useful research, or even to think of a direction for research that would be useful in finding new understanding.

    To be more certain of funding, researchers began wildly over-estimating the value of their proposed research, and thereby taking advantage of any ignorance on the part of grant-givers. Partly this was because the researchers deliberately lied. Partly it was because the researchers would discuss their research in a way that would encourage others to over-estimate. The researchers take advantage of a social weakness; people want to believe there is progress in understanding ourselves.

    Thomas J. Watson, Jr., former CEO of IBM came to the conclusion that the talk of artificial intelligence was not to be believed, and said so publically. I was not able to find the quote. Mr. Watson was expressing a low opinion of the research in intelligence at the time.

    4) Research about the brain and intelligence is far more difficult than other research. That's partly because the architecture of the brain is far more complicated than that of a computer.

    Digital computers use binary. Biological computers use many more levels than two, and we are far from fully understanding the architecture.

    This (poorly edited) PDF file from UCSD has some basic facts about the brain: Levels of neurophysiological description. From page 2: "100 billion neurons in the brain; 1/20th [of] 1 hair width in diameter; Speed transmission 2-120 metres/sec; each neuron has about 10,000 contacts with other neurons.

    From page 17: "Each neuron [of the 30 billion neurons] has about 10,000 connections with other neurons. These connections use many different neurotransmitters. These neurotransmitters differ in their strength, timing, and whether they excite or inhibit the postsynaptic neuron. If excitatory + inhibitory = threshold the postsynaptic neuron fires!" [slight editing for clarity]

  12. We'll Need to wait for quantum computing by lperdue · · Score: 2, Insightful
    This experiment is based totally on the wrong architecture. The reductionist approach to neuroscience is stuck in a classical physics mode and does not take into account the newest theories of Sir Roger Penrose and others that human consciousness may arise from quantum phenomena.

    For more details, see