Originally posted by Da Pittman
Basically you are duplicating the process of the brain, we currently do not have the memory space or processing power that they brain does but we can already map parts of the brain and duplicate or mimic the functions of this area.
No, I misunderstood you at first, you are totally right about the simulations. There are various labs around the world attempting this in different ways. Some are trying to build actual physical recreations of the brain, but most do go for the simulation.
I think I took it too literal when you mentioned making a computer fast enough to make it smarter than a human.
Originally posted by Da Pittman
We can not as of yet do this for the entire brain because of the current limits of speed and memory.
I would disagree. The rate limiter right now might be memory and speed, but we certainly don't understand enough about the function of intelligence and neuro connectivity to make sense of it.
Obviously it would be a remarkable tool, but there are theoretical limits to how helpful this simulation would be. For instance, each individual brain is formed in response to incoming stimuli from the world. A simulation of a visual cortex on a computer is useless unless you are also simulating all of the photons in the environment that are interacting with the cones and rods in the eyes. You might say that inputs like a keyboard or a mouse could be equivalent, but they are not. Even if keystrokes (a mixture of visual/abstract/somatic signals) could be broken down into "stimulus input", the researchers are now forced to build a new type of sensory cortex to interpret it, and somehow integrate this into a simulation of a human brain in such a way that it is still applicable for research purposes.
This is compounded with local plasticity in neuro functioning as well. The visual pathway is constantly rearranging the connections it makes in response to stimuli contrasts. This reorganization of cortical space is essential in our perception. A simulation would have to account for this. Obviously we don't have the power to do that computationally, but we also have no clue about how or why it works in the way it does. We can talk about the effects of pruning down pathways for efficiency, and constancy of certain types of stimuli, but we do not know, neuron for neuron, what is happening in the brain, which would be necessary for these types of simulations, especially once you try to simulate plasticity as I have mentioned, or incorporate new forms of stimuli.
Originally posted by Da Pittman
We can already have a two way street of a computer communicating to and from the brain and each one learning how each other responds and will change its "programing" in turn.
indeed, but the programmer will be at a loss when attempting to program various essential neurological functions right now.
I get that the purpose of simulating the brain is a form of near reverse engineering, but the "any sufficiently advanced technology is indistinguishable from magic" idea is applicable here, imho.
Originally posted by Da Pittman
I don't think your analogy works for multiple computers,
I agree, I just think it is better than the comparison of the brain to a single computer
Originally posted by Da Pittman
[B]the eyes are just a port for information to be sent to the brain such as a mouse, keyboard or camera but the brain or hard drive still does all of the computing of this new data.
This is entirely untrue. The cones and rods in the eyes each provide specific visual information to the visual system. Patterns of cone and rod activation can send signals of motion and other "featural" information to the visual system before it has been processed by any brain areas. Immediately preceding the eye, retinal ganglion cells interpret and send a variety of signals, contrast (blue-yellow, red-green, black-white) sensitive, through a pathway to the LGN, which has constantly reorganizing pathways of communication with the visual cortex. Another reason the computer metaphor fails is because of its conceptualization of information processing as being this passive and localized process. Every cell, every pathway, is essential in building a representation. Your eye is certainly no less involved in vision than your visual cortex is.
Originally posted by Da Pittman
[B]So for the sake of the thread I could see an AI being the Antichrist more than anything else. Go T-100000000000000 😈
****, I can write 12 thousand pages about perception, but a witty comeback, HA