Air-conducted ocular vestibular-evoked potential

Ocular vestibular-evoked myogenic potential (O-VEMP) test can have great clinical value if potential influences of stimulus characteristics are known. Therefore, it is of interest to examine the effects of different variables on O-VEMP responses by delivering air-conducted sound stimuli in the form of tone bursts and clicks in sitting and supine positions in healthy participants. Total 60 healthy participants in the age range of 18-60 years were investigated and statistical analysis was performed to find the variations in O-VEMP responses (p-value of <0.05 was considered as significant). Tone burst stimuli resulted in larger amplitudes (p=0.005, p = 0.0008) and lower thresholds (p = 0.005, p=0.03), for right and left ear respectively, while supine position produced larger O-VEMP amplitudes as compared to those in sitting position (p<0.001). Potential influence of stimuli, recording conditions, age and gender on O-VEMP response should be borne in mind during clinical interpretation.