Rats flying F-22's
A collection of 25,000 "living" neurons were taken from the brain of a rat and cultured in a petri dish. Soon, they claimed, they had a living computation device with enough power to control an F-22 fighter jet. Using a multielectrode array to interface between the neurons and a desktop computer, they set up a bidirectional communication channel and "taught" the neurons to operate a flight simulator. Pretty soon, they had a network that could maintain a relatively stable flight by controlling the pitch and roll of the aircraft in various weather condition.
Pretty impressive I'll admit. My roommate, a microbiologist, is all over me - "Ha Ha. we'll have AI before you will." But it's one thing to learn to control aircraft, another to do ,say, common sense reasoning, as AI researchers have found. Pretty soon they're going to run into the same problems we did, when they try to "scale things up." They seem pretty optimistic:
"We're just starting out. But using this model will help us understand the crucial bit of information between inputs and the stuff that comes out ... And you can imagine the more you learn about that, the more you can harness the computation of these neurons into a wide range of applications."
Best of luck guys, you'll need it.