Arets Paeglis wrote: > Are you seriously going to suggest that we still have no idea as to what > "neurons are doing"?
Yes. Absolutely. We are clueless. We kinda know what they do at the micro scale. We have a vague notion of what the human being can do at the macro scale. But we really don't know what they're doing at the intermediate scale. We see neural circuits and we have correlates with what kinds of things seem to usually cause them to activate, we also have some idea of what happens when they're artificially stimulated, but we really don't know how they work and which of the observed features are actually important, and which are just artifacts. > On Tue, Aug 28, 2012 at 7:52 PM, Steve Richfield > <[email protected] <mailto:[email protected]>> wrote: > > Alan, > > Your discussion fits right in with some of my postings. I have > discussed the equivalent unity gain frequency of neurons (for 741s > it is ~1MHz), negative feedback in the form of variable driven > impedance, etc. It appears that internally, neurons may "compute" > about as fast as vacuum tubes, and NOT at the much slower pulse > rates seen at the outputs of spiking neurons. > > However, I fear that we are throwing pearls before swine. > > Also, I wonder if everyone else is missing an essential point. We > are NOT saying "neurons are SO much faster and smarter that we can > never duplicate such function on a human scale", but rather "if we > make the effort to understand what neurons are doing, then we will > have some chance of understanding the problems they are solving, > after which we can then engineer human scale systems without being > encumbered by the neuronal legacy." > > Steve > =================== > On Tue, Aug 28, 2012 at 9:34 AM, Alan Grimes <[email protected] > <mailto:[email protected]>> wrote: > > om > > The elemental unit of an analog computer, akin to an NAND gate, > is the > operational amplifier. The canonical opamp is the LM741, which was > introduced in 1968 and is still the standard opamp that everyone > uses. > The Japanese have an equivalent part which has pretty much > identical specs. -- E T F N H E D E D Powers are not rights. ------------------------------------------- AGI Archives: https://www.listbox.com/member/archive/303/=now RSS Feed: https://www.listbox.com/member/archive/rss/303/21088071-c97d2393 Modify Your Subscription: https://www.listbox.com/member/?member_id=21088071&id_secret=21088071-2484a968 Powered by Listbox: http://www.listbox.com
