Does your brain outpower a computer?

[Line]

I've been hearing that our very brains have more computing power than the highest of computers. IS this true. I mean what do we d o that's all that complex without brains. I know consciously we don't have very much math ability but unconsciously we do. By the way, which mental activities use the most working of our mind?

I also hear that there are more conversations from the left and right side of your brain than there are from North America to Europe per day. I wonder if we use much power as we sleep. Seeing that computers have millions and millions of transistors on one microchip and process extremely hard programs I don't see what we do that's so fantastic without minds.

 

[Danger]

Line, I don't know whether or not you've ever looked into neurology from the physical rather than psychological standpoint. The brain consists of something on the order of 200,000,000,000 neurons, each interfaced with up to a thousand others. When you start working out how many data points that can entail, you'll realize that the most complex artificial computer imaginable can't come close to replicating our thought processes. As a simple answer to your question, you thought to ask the question; a computer wouldn't because it can't think.

 

[0rthodontist]

Well, but how much of the brain is actually devoted to thinking and how much is devoted to sensory or physical processing? In my opinion there is no particular reason why a powerful computer, programmed correctly, couldn't think.
http://www.transhumanist.com/volume1/moravec.htm is an interesting article on the subject.

 

[Astronuc]

Computers/processors must be programmed whereas the brain seems to be able to develop and understanding without external programming, although brains require sources of sensory stimulation, which originate externally.

Brains have intelligence, computers have 'artificial intelligence', or AI. Humans just haven't figured out how the brain develops intelligence, or the ability to think, so that the process can be rendered in a microchip.

In general, what brains cannot do is perform complex computations which computers can do, but only with instructions.

As of 2006, chip areas range from a few square mm to around 250 mm2, with up to 1 million transistors per mm²

http://en.wikipedia.org/wiki/Integrated_circuit

 

[Danger]

Well, but how much of the brain is actually devoted to thinking and how much is devoted to sensory or physical processing?

The problem with that question is that it isn't answerable at this stage of scientific understanding. No one knows what thinking is, or how we do it. There is intense research underway to determine that, but it's not tremendously successful. Bear in mind as well that the external signal processing is part of the thinking process. The preliminary 'filtering' is subconscious, but anything of interest is instantly flagged and sent to the cerebral cortex for attention. That's still 'thought', as evidenced by the fact that you can programme it to respond to something like a baby whimpering that would ordinarily be unnoticed, and to ignore something like a train going by.
I agree that at some point a computer will be able to think, possibly even the same way that a human does if analogue circuits are used, but not until we know how to create it.

 

[0rthodontist]

It's true that we are probably many years from a thinking computer, but we do already have programs that can learn--albeit often in simple ways--on their own. People also must be "programmed" to learn, by their genes.

 

[Line]

Thinking requires you to be conscious. COmputers far as I know can never be conscious. What we do is think, what computers do is process. Do we even use any brainpower while thinking> If it were just neurons it would be like the autonomic part of our brain, the part that controls heart function,temperature,and breathing while we are sleep. But there's something different in the conscious part, something that makes us...aware. WHat I'm trying to ilude to is ,is it our brain that's doing the thinking when we think or our minds? Science ahsn't proved the existence of the consciousness. If you're still perplexed it's the same concept in QUantam Pgysics as the spirit or soul is in religion.

Iw we had no consciouss it would be just liek we are when we're asleep...unconsciouss. BUt we are aware, alert and awake. I'm not sure if the nrain does any thinking at all or just translates our thoughts into electrical signals. Then come sthe hard question...where are our thoughts,where do they originate from? Are they juststarted off by neurons or some consciousness linked to our in our brains.

One sign that something is consciouss is freewill. We humans can do whatever we want to. SUre we've got instinct and natures calls but we don't have to do something if we don't want to. COmputers however live on a set plan, a set of rules called a program, no matter what it does it has to follow them. It's not thinking but just following rules and instructions. And just liek what happens to a thought where does sensory input go. We see it go from our eyes,ears, nose,tonguemand skin up our nerves to our brain centers. But where does it go after that? Does it just stop at the last neuron or go to a unexplored place. The place called the consciousness.


COnsciousness can never be on a computer. Until we we can do that computers will never truly think. So for calculating it may be the unconsciouss part that's fdoing it.

 

[Danger]

Unfortunately, the end of this is going to be a philisophical discussion rather than a scientific one. The opinion of how thought works, rather than the explanation, is purely subjective. I do not believe in anything that hints of supernaturalism, including a mind that's separate from the brain. To me, thinking is strictly an electrochemical process. How the neurons interact to produce consciousness is what current research is concentrating on, and that's the approach than my interest lies in.

 

[rbj]

my $0.02:

this device called a "transputer" is more like a neuron connected to a bunch of other similar devices and represents more closely the architecture of the brain. not sure they'll ever make transputers small enough to connect 100 billion of them with 100 trillion different connections (to put it on par with the human brain), but i kinda doubt it.

http://en.wikipedia.org/wiki/Transputer

anyway, to compare crudely, it's like we have a trillion or so bytes of memory but a slow CPU (about 40 Hz in our prime, about 17 years old) in our head. compared to silicon computers with far less memory and a far faster CPU. so, as a consequence, the silicon computer will likely evalutate heuristic functions that require a lot of computations and relatively less memory, and we just "look it up". it's sort of like the silicon guys use a sort of Taylor or Maclauren series to evaluate \sin(x) while our fleshy computer will just do a table lookup. slow CPUs with lotsa memory will optimally do table lookup over crunching numbers, but fast CPUs with much less memory will crunch the numbers instead of wasting a lot of space on a bunch of huge tables.

so the 17 year olds mind works a lot faster (about 40 simple compare-and-conditional-branch instructions per second in our stream of consciousness, there are a lot more parallel instructions per second happening a the neural level) but has a smaller database than the middle-aged person with a slower CPU but lots of experience that can still be looked up pretty fast.

about consciousness, it's been speculated (i don't know if it's true or not) that consciousness in higher species was evolved as a consequence of the need (or advantage) of integrating all of the different stimuli together with all of the different motor control. individuals of a proto-species that would better integrate all of this had a natural advantage regarding Natural Selection than individuals that had only reflexive reactions to stimuli. integrating all of this made for better decisions than mindlessly doing knee-jerk reactions and those protoplasms that could integrate and see a bigger picture of their existence and environment had a better chance of surviving long enough to do the horizontal bop and sire those who eventually sired people who could dream up microprocessors, space shuttles, and Barbie dolls. this "integration" of all of the various stimuli and motor control might very well be what our consciousness is.

we are already designing computers to do self-modifying code, a crude form of cognition. might be scary someday, perhaps in this century, if one of those AI machines does enough self-modifying code and becomes sentient. it might never happen. i dunno.

 

[Mickey]

There are many estimates of the brain's computational capacity based on work investigating individual regions. For example, Hans Moravec, after calculating the computational capacity of the retina and its systems, estimates the computational capacity of the entire brain at 10^14 instructions per second. Lloyd Watts, after working with the ears, also came to an estimate of 10^14 calculations per second. After studying the cerebellum, researchers from the University of Texas estimated 10^15 cps.

Ray Kurzweil outlines these studies in his latest book, The Singularity is Near, and opts for a more "conservative" estimate of 10^16 cps.

Right now, IBM's Blue Gene/L provides 3.6 x 10^14 cps, greater than the lowest estimates above.

Of course, this is all numbers. It doesn't take into account the functional differences between a computer and a brain. However, in terms of raw power, brains and computers appear evenly matched at this point in time.

Savor it while it lasts.

 

[NoTime]

Massive parallel beats clock spead.
Still waiting to see a computer run up and down stairs.

That and a few other things before I worry too much about consciousness.

 

[Francis M]

To the original post, Line: IMO our brain has computers beat in processing power due to the massive amount of connections neurons make. I think our brain makes up for a slow processing speed (if you will bear with the non technical explanations, that's all I have, sorry) by having these millions of parallel connections.
I think in computer parlance (as a programming friend of mine put it) it means that while we have a slower clock speed, we have a deeper decision tree.

 

[Line]

BUt what do we use it all for?

 

[Francis M]

THat's still being researched by scientists from multiple fields. It's an ongoing discovery.
BTW, Don't forget to check out the Biology, Mind and Brain Chemistry forum on this site.
You can also get into some pretty heavy stuff in the Metaphysics & Epistemology section under the Philosophy forum too, if that's more of what you're steering towards which is my guess from post #7.

 

[Mickey]

Still waiting to see a computer run up and down stairs.

Simple robotic contraptions have been able to do that for a while now. A slinky already accomplishes half of that task. Bipedal robots are jogging already, so emulating the energy inefficient human form is not far off either.

Machines were flying upstairs before they were ever walking them.

That and a few other things before I worry too much about consciousness.

You shouldn't ever have to worry. Any fear of the fact that artificial life will be conscious is simply a prejudice.

 

[NoTime]

Simple robotic contraptions have been able to do that for a while now. A slinky already accomplishes half of that task. Bipedal robots are jogging already, so emulating the energy inefficient human form is not far off either.

Machines were flying upstairs before they were ever walking them.

Cute
I rather ment to limit my comment to bipedal robots.

And I might point out that the human is hardly inefficient. It's only been in the last year or two that any walking machine has been built that even remotely approaches human efficiency.

You shouldn't ever have to worry. Any fear of the fact that artificial life will be conscious is simply a prejudice.

Nothing to do with fear. Just don't see it happening anytime soon.

 

[Danger]

Although it's not bipedal, here's an interesting walking robot. I can't help thinking of it as two guys in a horse costume. Patience is required; it's a slow site, and the sound is very irritating.

http://www.gizmag.com/go/5305/"

 

[PhY]

I've been hearing that our very brains have more computing power than the highest of computers. IS this true. I mean what do we d o that's all that complex without brains. I know consciously we don't have very much math ability but unconsciously we do. By the way, which mental activities use the most working of our mind?

I also hear that there are more conversations from the left and right side of your brain than there are from North America to Europe per day. I wonder if we use much power as we sleep. Seeing that computers have millions and millions of transistors on one microchip and process extremely hard programs I don't see what we do that's so fantastic without minds.

Our brains are far more powerful than any computer. No computer is more powerful than a Turing machine (a sequential symbol manipulating device [imagine a head that reads states or symbols off a tape ).

Quantum Computers can break this law/thesis, but they haven't yet, because quantum computers have been simulated by a Turing Machine.

Now I am not sure if our brains are as powerful as a Turing Machine, but I seriously doubt you can simulate a human brain on a Turing Machine. I personally think it will be an incomputable problem, because I do not think our brain works in the same way a Turing machine does.

Take note: A computer is stupid, no computer ever thought of gravity. A computer is just a Mathematical Machine (look up combinatorics). No computer ever innovated or aspired. It isn't capable of individual thought (yet).

Infact there is no such thing as Strong A.I (human intelligence or exceeded), I believe currently there is only Weak ( I have yet to research this though). Weak or Real A.I. according to my lecturer is just an approximation technique to run exponential time program (such as Traveling salesman problem) optimized to polynomial time.


To directly answer your question: With all this technology, information, biology and mathemathics, we still as a human race do not fully understand how the brain really and truly functions. Therefore at present it is impossible to simulate on any machine. Therefore my honest opinion is that our Brain is more powerful and I base my assumption on the fact that we cannot simulate our brain on a Turing Machine. Also Strong A.I. doesn't exist.
Computers cannot think, therefore our intelligence is far greater and if so I suppose more powerful.

Might I also add a Researcher is at present is trying to decode the Brain language, I read this on the BBC and watched a video (Human V2 by horizon). Maybe you will find this interesting and might answer your questions better.

 

[N468989]

Does your brain overpower a computer?
This is the question.It has been stated that the brain does huge amounts of processing, well we cannot even imagine to what extent it's real power is. Do we even have enough brainpower to calculate this?

If the brain overpowers a computer would we need computers? so this question might be the answer.

The bottom line is: Computers overpower the brain in some situations, and of course the brain overpowers computers in other situations.

if we compare the evolution time involved (millions vs hundreds), we will soon understand it's only a matter of time until computers overpower brain.

 

[es1]

Since, according to the link below, the human brian consumes 40W or less I would say yes, a computer can out power the brain. But as one would suspect, it really depends on the particular computer and particular brain.

http://en.wikipedia.org/wiki/Orders_of_magnitude_(power )

 

[Pythagorean]

One of our greatest differences is that the brain can process a lot of information in parallel (like how we are able to see, identify, and organize things visually all at once. There's a lot of data coming through our eyes (and other sensory) and we are able to react to it almost seamlessly.

A computer, on the other hand, is the master of series calculations. It can take a whole bunch of operations, one after the other, and execute them quickly. Most math problems we encounter, for instance, are series problems (it takes a series of logic steps to get a single solution or set of solutions). Here, the computer is much quicker than us.

 

[XPTPCREWX]

Computors are subject to logic, their operations can be calculated and predicted.
Our Brains however can do the same but cannot be predicted because it is subject to continuous change.

Our thinking affects who we are and who we are affects out thinking.

Computors do not share this paradox, they are not alive and hence will never think.

 

[N468989]

We program computers to do the thinking for us. We make algorithms which need to be understood by the logic machine, thus use the computers power to do the thinking for us.
Of course computers don't think, but sometimes we don't even think.

Actually i think, that 90% of our brain is not used for thinking : )

 

[XPTPCREWX]

intelligence:

1: the ability to learn or understand or to deal with new or trying situations : reason ; also : the skilled use of reason

2: the ability to apply knowledge to manipulate one's environment or to think abstractly as measured by objective criteria (as tests)

3: the act of understanding : comprehension

 

[XPTPCREWX]

We program computers to do the thinking for us. We make algorithms which need to be understood by the logic machine, thus use the computers power to do the thinking for us.
Of course computers don't think, but sometimes we don't even think.

Actually i think, that 90% of our brain is not used for thinking : )

Performing operations is not thinking. Thinking is applying reasoning and judgement.

 

[Proton Soup]

much of what our brains do is signal processing and pattern matching. silly things like edge detection are easy for us (even spiders), but so difficult to implement in silicon. eventually, engineers will get much better at this than we are now. until then, humans win there. humans are also pretty good at making snap decisions based on very little information. as bad as it is, our statistical processing is pretty good. where computers really have us beat, and we'll never be able to match, is working memory. the amount of objects they can juggle at once allows them to solve problems we're simply incapable of doing.

the biggest disadvantage for computers is that they aren't self-modifying. they can't really go outside of their programming. i don't think they'll ever have what we think of as intelligence until they reach that point of automated learning and modification. and if they do, we're probably screwed.

 

[Denton]

a computer wouldn't because it can't think.

Thats because its not programmed to think.

 

[XPTPCREWX]

Thats because its not programmed to think.

you cannot program thinking.


Show me a computer that created a thought or an idea outside of its logic.

 

[Mentallic]

Show me a computer that created a thought or an idea outside of its logic.

Stick around for a few more generations and one may just be programmed to do just that.

 

[XPTPCREWX]

Stick around for a few more generations and one may just be programmed to do just that.

Thats a contradiction in itself. "PROGRAMMED" to "THINK"

if you were instructed what to do and how to do it for the rest of your life, and did not realize it I would say you wern't "thinking"... no matter how complex the task might be.

Besides the only way a computers can function correctly is logically...its dependent on logic. without it... its useless. so it is confined to itself.

Our brains on the otherhand are free to do what we want whether immoral, unjust, unreasonable, impulsive, illogical, self-destructive, spontaneous, whatever...