Monday, June 06, 2005

Rat brain flies jet | The Register

I'm a rocketman...(rat?)

Rat brain flies jet | The Register: "Florida scientists have grown a brain in a petri dish and taught it to fly a fighter plane.

Scientists at the university of Florida taught the 'brain', which was grown from 25,000 neural cells extracted from a rat embryo, to pilot an F-22 jet simulator. It was taught to control the flight path, even in mock hurricane-strength winds."...

"When we first hooked them up, the plane 'crashed' all the time," Dr Thomas DeMarse, an assistant professor of biomedical engineering at the University of Florida, said. "But over time, the neural network slowly adapts as the brain learns to control the pitch and roll of the aircraft. After a while, it produces a nice straight and level trajectory."

The brain-in-a-dish was DeMarse' idea. To produce it, 25,000 rat neurones were suspended in a specialised liquid to keep them alive and then laid across a grid of 60 electrodes in a small glass dish.

The cells at first looked like grains of sand under the microscope, but soon began to connect to form what scientists call a "live computation device" (a brain). Electrodes monitor and stimulate neural activity in this network, allowing researchers to study how the brain processes and transfers information...

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