Sunday, April 23, 2006
This picture documents an important event in 1911.
But hear this! Less than hundred years later...
A University of Florida scientist has created a living "brain" of cultured rat cells that now controls an F-22 fighter jet flight simulator.
Thomas DeMarse, a University of Florida professor of biomedical engineering, placed an electrode grid at the bottom of a glass dish and then covered the grid with rat neurons. The cells initially resembled individual grains of sand in liquid, but they soon extended microscopic lines toward each other, gradually forming a neural network — a brain — that DeMarse says is a "living computational device."
"We grow approximately 25,000 cells on a 60-channel multi-electrode array, which permits us to measure the signals produced by the activity each neuron produces as it transmits information across this network of living neurons," DeMarse told Discovery News. "Using these same channels (electrodes) we can also stimulate activity at each of the 60 locations (electrodes) in the network. Together, we have a bidirectional interface to the neural network where we can input information via stimulation. The network processes the information, and we can listen to the network's response."
The brain communicates with the flight simulator through a desktop computer.
Read the whole story here!