EyeSeeCam vHIT features an easy guide to let you know when your head impulses are performed at the correct head velocity, which is 150-300 degrees per second. Feedback is given to indicate if your head impulses are in this range, visualized by a shaded area. Head impulses within the shaded area yield a 'ding' sound and a green check mark. Head impulses outside the shaded area yield a 'dong' sound and a red cross mark.