Turning on the Light (IMAGE) Norwegian University of Science and Technology Caption Researcher Albert Tsao, at the Norwegian University of Science and Technology's Kavli Institute for Systems Neuroscience, uses a laser light to send a pulse of light into specially altered nerve cells in the rat brain. The light causes the nerve cells to be activated and illuminates the network of cells that communicate with each other. Credit Geir Mogen, NTNU Usage Restrictions with proper crediting 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.