The device (IMAGE) University of Missouri-Columbia Caption The monitoring part of the wearable device is designed to continuously track the health of a human heart via dual signals simultaneously — an electrocardiogram (ECG), which measures a heart’s electrical signal, and a seismocardiogram (SCG), which measures heart vibrations. Credit Pate McCuien/University of Missouri Usage Restrictions For media use License Original 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.