The cortical algorithm is interesting. Cortical columns are pretty sexy
too because they're an obvious target for finding a high level algorithm
that does the same or better.
But regardless of how you implement cortex, the next thing you MUST do
to achieve a full functioning mind is to implement the actual structure
for sequential thought, not just a logic network (like a deep learning
model), but actual sequential thinking. It also seems that the brain can
do basic task switching, in that multiple symbols can be fit into the
pipeline and operate in sequence.?? I think the synchronization and
buffering is done by the basal ganglia.
In the brain, that structure is the Cortico-thalamo-Cortical loop. Any
functioning AGI architecture will have something similar.
There are several things going on, one is basic feedback, ie feedback
applied to an input circuit will squelch out parts of the input that the
brain has already perceived so that new information is highlighted.
Sometimes brain regions generate activity spontaneously and information
is encoded by inhibiting some of those spontaneous signals. So yeah,
there is a lot of information to grok but it's all important if you want
to sucessfully make a functioning AGI.
Another thing is disinhibition, where a brain region might have
inhibitory projections but if it, itself, is inhibited, that is removing
that inhibition to the ultimate target, so it becomes disinhibited and
available to either spontaneous firing or stimulated firing.
(many neurons have a base rate of spontaneous firing that can either be
excited or inhibited.)
Quote from page on Thalamus linked below:
Recent research suggests that the mediodorsal thalamus may play a
broader role in cognition. Specifically, the mediodorsal thalamus may
"amplify the connectivity (signaling strength) of just the circuits in
the cortex appropriate for the current context and thereby contribute to
the flexibility (of the mammalian brain) to make complex decisions by
wiring the many associations on which decisions depend into weakly
connected cortical circuits."[31] Researchers founds that "enhancing MD
activity magnified the ability of mice to ???think,???[31] driving down by
more than 25 percent their error rate in deciding which conflicting
sensory stimuli to follow to find the reward." [32]
REALLY?!??!!??!???? YOU THINK?!??!?!!?? I mean like wow, you must be like
Sherlock Holms and Albert Einstein rolled together, I mean who would
have thought a piece of anatomy that was basically wired into just about
every part of the brain and was part of the major signal/information
flows into and through the brain could have such a role!!!!
Seriously though, this is how the brain selects which networks it needs
to accomplish specific functions and implements multiple behaviors (ie
general intelligence) instead of just mastering one simple domain such
as an Atari game or something.
https://en.wikipedia.org/wiki/Cortico-basal_ganglia-thalamo-cortical_loop
https://en.wikipedia.org/wiki/Thalamus
https://en.wikipedia.org/wiki/Basal_ganglia
Anyway, this post is part of a series I'm doing on neural anatomy, I
already have my topic picked out for tomorrow, not sure what else I
should cover, feel free to make requests...
--
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Funny money comes from the FED
so NO FED -> NO CLOWNS!!!
Powers are not rights.
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Artificial General Intelligence List: AGI
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