To make the model come alive, the team feeds the models and a few algorithms into a supercomputer.
"You need one laptop to do all the calculations for one neuron," he said. "So you need ten thousand laptops."
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The research could give insights into brain disease
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Instead, he uses an IBM Blue Gene machine with 10,000 processors.
Simulations have started to give the researchers clues about how the brain works.
For example, they can show the brain a picture - say, of a flower - and follow the electrical activity in the machine.
"You excite the system and it actually creates its own representation," he said.
Ultimately, the aim would be to extract that representation and project it so that researchers could see directly how a brain perceives the world.