tDCS-induced Astrocytic Calcium Surges in Normal and Knockout Mice (video) RIKEN Share Print E-Mail Loading video... Caption (Top) Low spontaneous calcium activity in normal mice followed by tDCS-induced astrocytic calcium surges. (Bottom) tDCS-induced calcium surges are absent in IP3 Receptor 2 knockout mice. Credit RIKEN Usage Restrictions credit RIKEN Share Print E-Mail 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.