Re: Motivational Systems of an AI [WAS Re: [agi] RSI - What is it and how fast?]

2006-12-19 Thread Joel Pitt 

On 12/14/06, Charles D Hixson <[EMAIL PROTECTED]> wrote:

To speak of evolution as being "forward" or "backward" is to impose upon
it our own preconceptions of the direction in which it *should* be
changing.  This seems...misguided.


IMHO Evolution tends to increase extropy and self-organisation. Thus
there is direction to evolution. There is no direction to the random
mutations, or direction to the changes within an individual - only to
the system of evolving agents.

--
-Joel

"Unless you try to do something beyond what you have mastered, you
will never grow." -C.R. Lawton

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Re: [agi] Brain memory Map Article -

2006-12-19 Thread Bob Mottram 

I was also reading that article.  The place cell phenomena has been known
for many years.  For a long time I've thought that sleep might be used for
something other than just down time and cellular repair, and this research
does seem to confirm that sleep has some functional role.  It's interesting
that memories are played back in reverse, which might suggest some form of
back-propogation in which the brain is searching for the most likely causes
of interesting events.






On 18/12/06, James Ratcliff <[EMAIL PROTECTED]> wrote:


Interesting article on how they really exhaustively mapped a rats brain...

"The researchers could interpret the memories through electrodes inserted
into the rats' brains, including into special neurons in the hippocampus.
These neurons are known as "place cells" because each is activated when the
rat passes a specific location, as if they were part of a map in the brain.
The activation is so reliable that one can tell where a rat is in its cage
by seeing which of its place cells is firing."

http://www.nytimes.com/2006/12/18/science/18memory.html?ref=us

James Ratcliff


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