Steve, The signal from every "antenna" can be used to see what happens inside the cell during action potential generation (1ms) in vivo, see the papers, http://neuroelectrodynamics.blogspot.com/p/spike-directivity.html With single electrodes in vitro,the phenomenon cannot be observed
Dorian On Fri, Jun 29, 2012 at 2:39 PM, Steve Richfield <[email protected]>wrote: > 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> > <https://www.listbox.com/member/archive/rss/303/17795807-366cfa2a> | > Modify<https://www.listbox.com/member/?&;>Your Subscription > <http://www.listbox.com> > ------------------------------------------- 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
