Jittery Mouse movements when mouse isn't even moving!

My mouse makes jittery movements when I'm not even touching it! In this video, my hand is completely off of my mouse and the tabletop is not being shaken at all. This happens a lot to me.

The video was too large to directly attach here so you have to watch it on YouTube here: https://www.youtube.com/watch?v=kOpb_Q1jAIg&feature=youtu.be