Credit: Andrew BroadheadMusic affects us so deeply that it can essentially take control of our brain waves and get our bodies moving. TMS researchers trying out new ideas often start by targeting the primary motor cortex, a brain region responsible for coordinating movement. They outfitted 27 people with EEG caps at the Koret Lab so they could track brain waves in the motor cortex. Participants' brain waves quickly got into the groove. Previous studies have shown that dips in motor cortex brain waves happen when we're most prepared to move.