Makowiec Kathryn, McCaslin Devin L, Jacobson Gary P, Hatton Kelsey, Lee John
Division of Vestibular Sciences, Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, Nashville, TN.
Am J Audiol. 2017 Jun 13;26(2):180-188. doi: 10.1044/2017_AJA-16-0108.
The purpose of this investigation was to identify the optimal recording parameters for evoking the ocular vestibular evoked myogenic potential (oVEMP) using air-conduction stimuli.
Subjects were 17 otologically and neurologically intact adults (age: M = 24.18 years, SD = 1.91 years). The oVEMP responses were elicited using a 500-Hz tone burst air-conduction stimulus presented at an intensity of 95 dB nHL. The setting was a balance function laboratory that was part of a large tertiary care otology clinic.
The oVEMP electrode montage and body position that yielded the largest oVEMP amplitude was the belly-tendon montage (Sandhu, George, & Rea, 2013), recorded with the subject in the sitting position. The N1 latency recorded with the belly-tendon montage was significantly shorter than that recorded for the infraorbital montage in both the sitting and supine positions.
The belly-tendon recording montage with the subject sitting yields significantly larger oVEMP amplitudes and shorter N1 latencies than do traditional bipolar infraorbital recordings.
本研究的目的是确定使用气导刺激诱发眼前庭诱发肌源性电位（oVEMP）的最佳记录参数。
受试者为17名听力和神经功能正常的成年人（年龄：M = 24.18岁，SD = 1.91岁）。使用强度为95 dB nHL的500 Hz短纯音气导刺激诱发oVEMP反应。实验地点是一家大型三级护理耳科诊所的平衡功能实验室。
产生最大oVEMP振幅的oVEMP电极组合和身体位置是腹肌腱组合（Sandhu、George和Rea，2013年），记录时受试者处于坐姿。在坐姿和仰卧位时，腹肌腱组合记录的N1潜伏期明显短于眶下组合记录的N1潜伏期。
受试者坐姿时的腹肌腱记录组合比传统的双极眶下记录产生的oVEMP振幅明显更大，N1潜伏期更短。
