Optimizing ocular vestibular evoked myogenic potential testing for superior semicircular canal dehiscence syndrome: Electrode placement

M. Geraldine Zuniga, Marcela Davalos-Bichara, Michael C. Schubert, John P. Carey, Kristen L. Janky

Research output: Contribution to journalArticle


Objective: To compare the sensitivity and specificity of ocular vestibular evoked myogenic potentials (oVEMPs) using 2 electrode montages for the diagnosis of superior canal dehiscence syndrome (SCDS).

Subjects: 16 SCDS patients (17 affected-SCDS ears, 15 contralateral-SCDS ears) and 12 controls (24 ears).

Methods: oVEMPs were recorded in response to 500-Hz tone bursts using 2 electrode montages. For both montages the active electrode was placed approximately 5 mm below each eye and a ground electrode on the sternum. For montage 1 (standard), the reference electrode was centered 2 cm below each active electrode. For montage 2, the reference electrode was placed on the chin.

Results: For either montage, the separation between oVEMP amplitudes in affected-SCDS ears and controls was significant (p < 0.001), with excellent sensitivity and specificity (>90%). Conclusion: oVEMP recordings with the standard montage remain a reliable method for evaluation of SCDS.

Original languageEnglish (US)
Pages (from-to)239-247
Number of pages9
JournalAudiology and Neurotology
Issue number4
StatePublished - Nov 7 2014



  • Ocular
  • Otolith
  • Superior canal dehiscence syndrome
  • Vestibular evoked myogenic potential

ASJC Scopus subject areas

  • Physiology
  • Otorhinolaryngology
  • Sensory Systems
  • Speech and Hearing

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