Electrode array (IMAGE) Brown University Caption As part of the BrainGate clinical trial, researchers are using tiny electrode arrays to record signals from the motor cortex of the brain. Those signals can then be used to control robotic prostheses, computers or other devices. The hope is that such a system may one help restore communication and movement in people with paralysis due to injury or illness. Most recently, a clinical trial participant used the device to write text on a computer just by thinking about the movements involved in handwriting. Credit BrainGate.org Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.