Model of Dog Heart Ventricle (image) American Mathematical Society Caption This picture is from research of Wenjun Ying of the Department of Mathematics at Shanghai Jiao Tong University, who studies electrical wave propagation in the heart with the technique of adaptive mesh refinement. The picture shows the adaptively refined grids that keep track of the propagating electrical waves in a virtual dog ventricle. The region covered by the blue grids denotes the area where the cardiac tissue is not activated while the red area shows where the tissue is activated. Credit Wenjun Ying, Department of Mathematics, Shanghai Jiao Tong University Usage Restrictions Obtain permission from Wenjun Ying, http://math.sjtu.edu.cn/faculty/wying/, before reproducing this image. 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.