Avis Cohen, University of Maryland (IMAGE) University of Maryland Caption University of Maryland Professor Avis Cohen is using the nervous system of the lamprey to develop a prosthetic device that could enable people with spinal cord injuries to walk again. Credit University of Maryland 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.