Dorian, On Fri, Jun 29, 2012 at 2:05 PM, Dorian Aur <[email protected]> wrote:
> Excellent topic. During every action potential every neuron *solves* an > n-body problem analog ‘doing’/ execution and the information is > electrically carried and integrated in the brain > http://neuroelectrodynamics.blogspot.com/p/spike-directivity.html *The > fundamental process of computation by physical interaction in the brain has > been widely misunderstood*. > I think the thesis of this site is misdirected. extracellular recording involves using a sort of "antenna" that collects not only the cell you are near, but also other nearby cells all added together. Hence, OF COURSE you will see apparent modulation, even when it isn't actually there. There has been most of a century of intracellular recording, where they impale a neuron with an electrode and look at what is happening inside the cell. Those experiments have observed NO such modulation. It appears that the value being transmitted is a function of the separation between spikes. This is NOT linear, and closely placed spikes count as MUCH more than isolated spikes. However, information travels BOTH ways on axons, and there may even be more than one "forward channel" as ions travel both ways along axons. However, only a tiny percentage of neurons, mostly ones with really long axons (often long enough to see even without a microscope) to transmit their information to a distant place, even produce spikes. The vast majority of neurons simply vary their potential as they "compute", all without producing any spikes. Steve ------------------------------------------- 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
