Do Mice Care?

Mice get a glowing vest that you can turn on. It's like John Travolta, but for mice. You can turn this on and off and therefore change their heart rate. Does it change by much when you do this? Well, we can change it as much as we want. Mice are very averse to being out in the wide open where it would be easy to prey upon them. So then what happens when you pace the heart higher? Well, the animals much preferred being protected when the heart was going faster. They more strongly preferred the enclosed areas in the corners and the walls.