Interesting article:

Residents of the brain: Scientists turn up startling diversity among
nerve cells

"No two cells are the same. Zoom in, and the brain’s wrinkly, pinkish-
gray exterior becomes a motley collection of billions of cells, each
with personalized quirks and idiosyncrasies."

"New results suggest, for instance, that a population of nerve cells
in which individual responses to an electrical poke differ can process
more information than a group in which responses are the same. "

"in addition to losing neurons, the brain would lose diversity, a
deficit that could usher in even more damage."

I would say this tends to support my view that the idea of replacement
neurons or normative behavior modeling is likely to be a dead end as
far as functionalism is concerned. It's more appropriate to consider
your brain a civilization of individual organisms (only some of which
are the conscious 'I') rather than a powerful computer executing
complicated instructions.


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