Research Group (IMAGE) Graz University of Technology Caption Tony Schmidt, Rainer Schindl (both Med Uni Graz) and colleague Theresa Rienmüller (TU Graz) developed a fundamentally new concept to stimulate nerve cells with light-active semiconductor structures. Credit © Lunghammer - TU Graz Usage Restrictions Photo is free of charge for editorial purposes. The use of the photo is only permitted provided that the source is cited in full together with TU Graz. The use of the photo for advertising purposes by institutions not affiliated with TU Graz is only possible upon request. License Original 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.