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Ocular vestibular-evoked myogenic potentials via bone-conducted vibration in children

Chen-Han Chou1, Wei-Chung Hsu, Yi-Ho Young

  • 1Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.

Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology
|March 6, 2012
PubMed

Insights

Bone-conducted vibration (BCV) elicits ocular vestibular-evoked myogenic potentials (oVEMPs) reliably in children over 3. Ocular VEMPs are unaffected by structural factors, aiding VOR assessment in pediatric populations.

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Audiology

Background:

  • The vestibulo-ocular reflex (VOR) is crucial for maintaining gaze stability.
  • Ocular vestibular-evoked myogenic potentials (oVEMPs) provide a non-invasive method to assess the VOR system.
  • Bone-conducted vibration (BCV) is an effective stimulus for eliciting oVEMPs.

Purpose of the Study:

  • To evaluate the feasibility of using BCV stimuli for oVEMP testing in healthy children and adults.
  • To compare oVEMP parameters between pediatric and adult populations.
  • To determine the influence of structural factors on oVEMP characteristics.

Main Methods:

  • oVEMP testing was performed on 15 healthy children (3-14 years) and 18 healthy adults (24-28 years) using BCV stimuli.
  • Structural factors including body weight, height, and BMI were recorded.
  • Stimulation intensity was increased stepwise to assess response changes.

Main Results:

  • All participants exhibited clear, bilateral oVEMPs.
  • No significant differences were found in oVEMP latencies and amplitudes between children and adults.
  • Interaural acceleration magnitudes for eliciting oVEMPs were comparable between groups and showed no correlation with structural factors.

Conclusions:

  • BCV-elicited oVEMP testing is a simple, quick, and reliable method for assessing VOR integrity in children over 3 years old.
  • oVEMP parameters are not significantly influenced by structural factors in this age group.
  • Establishing normative oVEMP data is vital for diagnosing VOR deficits in children.
Abstract

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