In Vivo Neural Imaging (VIDEO) University of California - San Diego This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption This is imaging of calcium spikes 250 micrometers below the cortical surface in transgenic mice. Studies were performed with low-impedance transparent graphene electrodes developed by researchers at UC San Diego. Credit Yichen Lu Usage Restrictions Please credit: Yichen Lu 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.