Tuesday, October 20, 2009

Henry Markram builds a brain in a supercomputer

The 2009 TED Talk by Henry Markram describes how we now have the maths to model the neurocortical columns of the brain. He (and IBM) have built Bluebrain, a computer capable of modelling the brain. What's most interesting to me are the philosophical questions raised; what is a person? where and how do we begin and end? and with whom can we communicate? even, why are we here? And especially, what can a robot think? And is our brain evolving outside of our body in augmented reality?

These are all touched on in this fabulous TED Talk . It's one of the best 15 minutes I've spent all year! I've added the official TED bio below to do better justice to the rich subject than I can.

"In the microscopic, yet-uncharted circuitry of the cortex, Henry Markram is perhaps the most ambitious -- and our most promising -- frontiersman. Backed by the extraordinary power of the IBM Blue Gene supercomputing architecture, which can perform hundreds of trillions of calculations per second, he's using complex models to precisely simulate the neocortical column (and its tens of millions of neural connections) in 3D.

Though the aim of Blue Brain research is mainly biomedical, it has been edging up on some deep, contentious philosophical questions about the mind -- "Can a robot think?" and "Can consciousness be reduced to mechanical components?" -- the consequence of which Markram is well aware: Asked by Seed Magazine what a simulation of a full brain might do, he answered, "Everything. I mean everything" -- with a grin.

Now, with a successful proof-of-concept for simulation in hand (the project's first phase was completed in 2007), Markram is looking toward a future where brains might be modeled even down to the molecular and genetic level. Computing power marching rightward and up along the graph of Moore's Law, Markram is sure to be at the forefront as answers to the mysteries of cognition emerge.

"Markram refers to the robot as "science on an industrial scale," and is convinced that it’s the future of lab work. "So much of what we do in science isn’t actually science," he says, "I say let robots do the mindless work so that we can spend more time thinking about our questions.""

Jonah Lehrer, Seed Magazine"

Posted via web from technoist at play

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