Nagarajan Aishwarya, Sinha Sujeet Kumar
*Department of Audiology, All India Institute of Speech and Hearing, Mysore, India.
†Center of Excellence for Persons with Tinnitus and Vestibular Disorders, Department of Audiology, All India Institute of Speech and Hearing, Mysore, India.
J Am Acad Audiol. 2025 May 1;36(3):180-187. doi: 10.3766/jaaa.240100. Epub 2025 May 27.
The masseter vestibular-evoked myogenic potential (mVEMP) is a short-latency electromyographic potential that assesses the integrity of the vestibule-masseteric reflex pathway. Due to limited normative studies, there is no optimal mVEMP protocol to be implemented clinically. Apart from the conventional electrode configuration, a naïve montage referred to as the forehead reference has been used in recent studies. This study compared latency and amplitude parameters of mVEMP between the zygomatic and forehead electrode configurations to address the optimal electrode montage to elicit mVEMP. Cross-sectional research study. Thirty healthy participants (mean age: 23.3 years; 14 males and 16 females). Participants underwent mVEMP testing under two-electrode montage conditions (zygomatic and forehead reference electrode montages). Statistically significant increases in P1 latency, decrease in N1 latency, reduction of P1-N1 interpeak interval, enlargement of both unrectified and electromyography-rectified amplitudes, and lower interaural amplitude asymmetry ratio were observed for the forehead electrode montage compared to the conventional zygomatic montage. mVEMP response waveforms obtained using forehead reference electrode montage are superior to the zygomatic montage. Hence, the forehead montage is suggested for further research on mVEMP.
咬肌前庭诱发肌源性电位（mVEMP）是一种短潜伏期肌电图电位，用于评估前庭-咬肌反射通路的完整性。由于规范性研究有限，临床上尚无最佳的mVEMP检测方案。除了传统的电极配置外，近期研究中还使用了一种称为前额参考的简易导联方式。本研究比较了颧部和前额电极配置下mVEMP的潜伏期和波幅参数，以确定引出mVEMP的最佳电极导联方式。横断面研究。30名健康参与者（平均年龄：23.3岁；14名男性和16名女性）。参与者在两种电极导联条件下（颧部和前额参考电极导联）接受mVEMP检测。与传统的颧部导联相比，前额电极导联的P1潜伏期显著延长，N1潜伏期缩短，P1-N1峰间期缩短，未整流和肌电图整流波幅均增大，双耳间波幅不对称率降低。使用前额参考电极导联获得的mVEMP反应波形优于颧部导联。因此，建议在前额导联方式下进一步研究mVEMP。
