A revolutionary experiment in combining a mechanical device with living tissue is under way. The cyborg is controlled by an immature lamprey eel brain that was removed, kept alive in a special solution and attached to the palm sized robot by wires so it can receive signals from the device's electronic eyes and send commands to move the machine' s wheels. The robot is the brainchild of Ferdinando Mussa-Ivaldi, a physiologist at Northwestern University's Rehabilitation Institute of Chicago.