/**
  * Gets the position of the Vive headset at a predefined interval and adds that data point to the
  * head position data file for the current trial.
  */
 void Tracking()
 {
     dataManager.AddHeadPos(Time.time, headPos.position, headPos.eulerAngles);
     dataManager.AddControllerPos(Time.time, controllerPos.position, controllerPos.eulerAngles);
 }