Heidi the Goat Responding to Calls (VIDEO) Queen Mary University of London 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 The video shows Heidi while being tested using a Positive Negative Positive (PNP) calls sequence. In particular, the video shows Heidi being played two positive calls, a negative call and then a randomly selected call from the first phase of calls. The duration of looking behavior towards the source of the sound and the cardiac activity were recorded simultaneously. The cardiac activities were recorded using a non-invasive Bluetooth device (BioHarness Physiology Monitoring System) fixed to a belt placed around the goat's chest. Credit Alan McElligott Usage Restrictions None 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.