Fig. 3
From: Age dependent normal horizontal VOR gain of head impulse test as measured with video-oculography
Example of omitted data of HVOR velocity gain vs time with artefact. In this subject, too few head rotations were plotted, and a narrow palpebral fissure lead to artefact. Nevertheless, the examiner can determine from the observation of the eye and head velocity traces that the vestibular function of this subject is normal. Despite the artefacts, one can observe that peak eye velocity corresponds with peak head velocity