Tehran University of Medical Sciences Auditory and Vestibular Research 2423-480X 23 2 2017 07 31 31 41 Mozhgan Masoom Department of Audiology, School of Rehabilitation, Tehran University of Medical Science, Iran Mansoureh Adel Ghahraman Department of Audiology, School of Rehabilitation, Tehran University of Medical Science, Iran Abdolreza Sheybaniezadeh Department of Audiology, Faculty of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran Kamran Barin Departments of Otolaryngology and Physical Therapy, Columbos Children's Hospital and the Ohio State University, Columbus, Ohio, USA Shohreh Jalaie Department of Physiotherapy, School of Rehabilitation, Tehran University of Medical Science, Iran 2017 05 22 Background and Aim: Since utricle is the main damaged organ in benign paroxysmal positional vertigo (BPPV), ocular vestibular evoked myogenic potential (oVEMP) may be an appropriate method to evaluate the utricule dysfunction and the effect of disease recurrence rate on it. This study aimed to record myogenic potential in patients with benign paroxysmal positional vertigo. Methods: In a cross-sectional study, ocular myogenic potential was recorded in 25 healthy subjects and 20 patients with benign paroxysmal positional vertigo using 500 Hz-tone bursts (95 dB nHL). Results: In the affected ear, mean amplitude was lower and mean threshold was higher than those in the unaffected ear and in the normal group (p<0.05). Mean amplitude asymmetry ratio of patients was more than the healthy subjects (p<0.001). There was no statistical difference between the two groups regarding mean latencies of n10 and p15 (p>0.05). Frequencies of abnormal responses in the affected ears were higher than in unaffected ears and in the normal group (p<0.05). Furthermore, the patients with recurrent vertigo showed more abnormalities than the patients with non-recurrent (p=0.030). Conclusion: In the recurrent benign paroxysmal positional vertigo, ocular vestibular evoked myogenic potential showed more damage in the utricle, suggesting this response could be used to evaluate the patients with benign paroxysmal positional vertigo. https://avr.tums.ac.ir/index.php/avr/article/view/251