Y'all are a bunch of wankers!

You Brain on Microchips

http://scienceblogs.com/cognitivedaily/2007/03/modeling_a_real_brain.php - Modeling a real brain

<quote>
A rat's brain has millions of neurons, each with up to 10,000 connections to other neurons. This "simple" animal's neural network is mind-bogglingly complex. Yet a Swiss laboratory has achieved remarkable success duplicating a vast region of a rat's brain using a supercomputer. They still have a ways to go, however. The computer currently has 10,000 microprocessors, each representing a single neuron in the rat's brain. To duplicate the entire brain they'll need a computer 2,000 times bigger.
</quote>

It's not quite a positronic brain, but still cool.
Permalink son of parnas 
March 27th, 2007 11:25am
When they say 'microprocessor' are we talking weaker than first gen pentiums?

It just seems a better physical model for a neuron isn't a processor, but a single transistor/potentiator combo.
Permalink JoC 
March 27th, 2007 12:17pm
Hmm.  At first, I assumed they were using PIC or AVR or ATMEL single-chip processors to model Neural Nets.

Instead, it looks like they've sliced rat brains thin, probed them with electrodes, reduced the results to tables, and are using table-lookup-algorithms with who-knows-what processors in an attempt to provide a faithful simulation of what the real brain does.

What the real brain does when sliced into slivers and stimulated with electrodes, that is.  How much that actually maps to what a rat 'thinks' when he's pressing the lever to drop a food pellet is still up for LOTS of debate.

But they're pretty adamant they're NOT doing a neural-net type of simulation.
Permalink SaveTheHubble 
March 27th, 2007 12:38pm

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