Laser Pointer and Webcam Results (IMAGE) Optica Caption A speckle contrast image (right) of the stroke-affected section of mouse brain averaged over 10 frames, with an image depicting the vascular anatomy (left) for comparison. Credit Andrew Dunn, University of Texas - Austin Usage Restrictions Must include caption and credit. 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.