Handwriting (IMAGE) Brown University Caption Using a brain-computer interface (BCI), a clinical trial participant with paralysis created letters on a computer just by thinking about the movements involved in writing by hand. The technique enabled the participant to "type" 90 characters per minute, a new record for BCI-aided typing speed. 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.