A trip down memory lane
stephan at nospam.ucla.edu
Tue Aug 17 02:26:47 EST 1999
"Nope" to you!!!! It is well known that the hippocampus doesn't
"ratchet-pawl" or "whittle," just look in any textbook.
In article <uQ#JLvh5#GA.370 at cpmsnbbsa03>, "Ken Collins"
<KPaulC at email.msn.com> wrote:
> nope. the hippocampal dynamics are as they are described in AoK...
> intermediate-'level' supersystem configuration.
> at this 'level' things cannot be considered to be 'stored'.
> what's happening is that (as is explained in AoK), be-cause this or that
> stimulus set is relatively unfamiliar (relatively novel), the inverting
> reward mechanisms are activated, which sets up an 'assigned value' to the
> stimulus set, in terms of the neural topology.
> as the supersystem 'extracts' this 'assigned value', the hippocampi
> 'whittle' (AoK, Ap5) away superfluous TD E/I.
> as this 'whittling' occurs (via hippocampal 'ratchet-pawling'; AoK, Ap5),
> the activation of the inverting reward mechanisms decreases, with
> accompanying 'affect' of decreased novelty, and increased familiarity.
> as a by-product of all of this, the hippocampi output ever-more-consistent,
> ever-more-refined, ever-more-TD E/I(min) supersystem configuration
> activation to thalamus, and it's =this= relatively-consistent activation
> that underpins the development of cortical microscopic trophic modifications
> that are consistently-correlated with the original stimulus set, and which
> constitute the stuff of 'memory'.
> what's 'stored' in the hippocampi is supersystem configuration stuff that's
> relevant only to the work that occurs in the hippocampi, and which is more
> relevant to 'affect' than it is to 'memory' because it's the stuff that
> determines, on the basis of TD E/I, whether a 'value' will be abstractly
> 'assigned' to this or that stimulus set, which, further, determines whether
> or not the the hippocampal TD E/I-minimization convergence dynamics will
> all of this, and much more that's tightly correlated is explained in AoK.
> the hippocampi are 'just' intermediate-'level' supersystem configuration
> 'servo mechanisms', which are, of course, as is explained in AoK, tightly
> integrated with the rest of the supersystem.
> K. P. Collins
> John wrote in message <934598571.895859 at server.australia.net.au>...
> >"He is featured in one of two research papers in the current edition of
> >Nature magazine that show, just like computers, our brains have separate
> >storage areas for working memory and archive information. "
> >Separate research reported by French scientists at the University of
> >Bordeaux, also in the current Nature magazine, explains what could be
> >Their experiments on mice show that although the brain stores recent
> >memories in the hippocampus, after a certain period - within 25 days in
> >mice - these recollections are re-filed or downloaded to an archive area in
> >the brain's outer regions."
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