In conclusion, this study provides electrophysiological evidence that abnormalities of the oVEMP pathway can be observed in patients with migraine without aura who are not experiencing vestibular symptoms during a headache-free period. These findings appear to be related to subclinical vestibulopathy in migraineurs. Thus, oVEMP may be useful in evaluating alterations in the vestibular system in patients with migraine as well as other types of primary headaches.