THE EFFECT OF STIMULUS RATE ON OCULAR VESTIBULAR EVOKED MYOGENIC POTENTIALS (oVEMPs)

Peripheral vestibular disorders are both serious and common. An accurate diagnosis of the vestibular disorders can be challenging. Since the first description of sound-evoked short latency myogenic reflexes that can be recorded from muscles, such as neck and eye muscles, vestibular evoked myogenic potentials (VEMPs) have become a vital part in the diagnosis of the vestibular system. VEMPS is an objective test which provides a means to evaluate the otolith function to assess the integrity of the vestibular organs the utricle and saccule in particular.

This study sought to examine the stimulus rate function of tone-burst sound via air conduction and bone conduction stimulus mode for eliciting oVEMPs. The optimal stimulation rate was explored by measuring the quality of oVEMPs response and peak to peak amplitude.

This study is expected to advance vestibular research by determining the repetition rate function of tone-burst sound on oVEMPs response. The optimal stimulation rate was explored by measuring the quality of oVEMPs responses and peak to peak amplitude. The effect of stimulus rate for eliciting oVEMPs was explored in air conduction and bone conduction mode.

The study found that the BC-oVEMPs recorded higher response presence rate than AC-oVEMPs. Additionally, a significant effect of stimulus rate on peak to peak amplitude, FSP and latency was found in BC-oVEMPsresponses. However, the significant effect on AC-oVEMPs was only found for peak to peak amplitude and latency. It was found that there is no significant effect of stimulus rate on FSP for AC-oVEMPs. Furthermore, the study has demonstrated that 1 Hz stimulus rate is recommended to yield the highest rate of the presence of clear responses, the highest peak to peak amplitude and the largest FSP for AC-oVEMPs. In contrast, 5 and10 Hz are recommended for BC-oVEMPs.

 

 

 

 

 

Author: Samar AlKhaldi

Conference Title

8th Emirates Otorhinolaryngology, Audiology, and Communication disorder conference

Conference Country

United Arab Emirates

Conference Date

Jan. 17, 2018 - Jan. 19, 2018

Conference Sponsor

HNO