On Oct 17, 9:06 pm, meekerdb <meeke...@verizon.net> wrote: > > > Since we know absolutely that we have experiences which cannot be > > observed directly in the tissue of the brain, > > We don't know that. We only know that we don't have the resolution and > instruments to > observe them directly...yet.
Do you think we will be able to find miniature versions of every episode of the Flintstones that I've ever seen inside my neurons? It's not possible. What would they be made of? Atoms? I think that you are thinking of how we are able to now reverse engineer some of the visual patterns by recording the measured activities of the visual cortex and convert them into images we could see on a screen. That, while awesome and amazing, has nothing to do with observing experiences in the tissue of the brain. Because we are only mapping what we know correlates to experience that we already have subjectively. Without that Rosetta Stone, we would not be tempted to think that these physiological patterns correlate to anything other than what they are. There is no homunculus watching TV in a Cartesian theater. We know that already with absolute certainty. We don't need to wait until a new kind of microscope is invented. > > > there is no sense in > > imagining that replicating what we observe in the brain will not be > > missing crucial capacities which we can't anticipate. Even replacing > > simpler organs with actual human organs have a risk of rejection. Why > > would the brain, which is presumably infinitely more sensitive > > But it is quiet insensitive in some respects, e.g. to touch, to light, to EM > fields,... Sure, they are highly specialized to be sensitive to interior sensorimotive experiences of the entire organism. It would make sense that they would rely on the rest of the body to take care of their physical maintenance and protection. > > > than a > > kidney, have no problem with a completely theoretical and unrealizably > > futuristic artificial device? > > Because the brain is sensitive to afferent nerve impulses and it is > relatively plastic. > That's why people can learn to see via signals from nerves on their back and > blind people > "envision" their surroundings by ear. Read this all the way through: Neuroplasticity is part of the reason why artificial appliances aren't likely to replace the brain to a significant degree. Semiconductors have very little chance of developing plasticity. Every condition needs to be anticipated and programmed for in advance. If you are talking about prosthetics, that's a different story. I'm very optimistic that we will have useful appliances to augment or repair neurological organs - as long as the ratio to healthy tissue is sufficient. Again - a cane is a lot better than no cane for someone who needs it, but we should not confuse a cane with a replacement for an arm. > > http://www.wired.com/wired/archive/10.09/vision.html > > In any case it is (for now) merely a thought experiment. > Cool, yeah. Things like this are partly why I think that subjective experience has to do with 'pulling wholes through holes', jumps to conclusions, fills in the gaps. This is what fiction is. A leap of suspended disbelief to get you from where you are to somewhere else. It's true cognitively as it is perceptively, sensationally, emotionally, etc. That's what sensorimotive phenomena is based on, and that is also what electromagnetism is. You (and most everyone else too) probably think of a magnet generating a 'magnetic field' in space which picks up a piece of iron and moves it around, but I think of a magnet as just a piece of metal which is able to inspire similar pieces of metal to pick themselves up - or more accurately, to flip it's motive orientation from the mass and density of the Earth to the atomic affinity of the similar metal. This affinity is a kind of sense experience - a feeling of physical coherence which is amplified in an orderly, wavelike pattern the closer the two objects are drawn together. There is no actual field. The iron feels the magnet and moves toward it. It sounds insane, I know, but I'm pretty sure that it's true. The contagious nature of the magnetic effect - the fact that the piece of iron is now a magnet, is just the same principle behind how a cane can be like a kind of eye for a blind person, and how rod and cone cells can influence neurons in the VC, and how the psyche can specifically influence the brain activity. Craig -- You received this message because you are subscribed to the Google Groups "Everything List" group. To post to this group, send email to email@example.com. To unsubscribe from this group, send email to everything-list+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/everything-list?hl=en.