Head impulse test

At rest, the patient is asked to fixate on a distant target. The patient's head is rotated rapidly by the examiner, first to the left (A to B), then to the right (C to D). In a normal response, the eyes remain on target (B). In an abnormal response, the eyes are dragged off target (D), followed by a saccade back to the target (E). This response implies a peripheral vestibular lesion on the right.