title: The Effect of Repetition Rate on Air-Conducted Ocular Vestibular Evoked Myogenic Potentials (oVEMPs).
abstract: OBJECTIVE
  Ocular vestibular evoked myogenic potentials (oVEMPs) are used to describe utricular/superior vestibular nerve function; however, optimal recording parameters have not been fully established. This study investigated the effect of repetition rate on air-conducted oVEMPs.
  
  
  METHODS
  Ten healthy adults were evaluated using 500-Hz tone bursts (4-ms duration, Blackman gating, 122 dB pSPL). Four repetition rates were used (1.6, 4.8, 8.3, and 26.6 Hz) and resulting oVEMP response presence, amplitude, amplitude asymmetry, and n1/p1 latency were assessed.
  
  
  RESULTS
  Response presence was significantly reduced for 26.6 Hz using monaural stimulation and for 8.3 Hz and 26.6 Hz for binaural stimulation. For monaural stimulation using 1.6, 4.8, and 8.3 Hz, no significant differences were noted for amplitude or latency. Responses obtained using binaural stimulation demonstrated a significant effect of rate on amplitude, with 8.3 Hz producing significantly reduced amplitude. Binaural amplitudes were significantly larger than monaural contralateral responses but with reduced response presence. No significant differences were noted for latency or amplitude asymmetry.
  
  
  CONCLUSIONS
  Using repetition rates of approximately 5 Hz or less may produce more consistent oVEMP response presence with minimal effects on amplitude for monaural or binaural recordings.
authors.forename: Jamie M
authors.initials: JM
authors.lastname: Bogle
authors.forename: David A
authors.initials: DA
authors.lastname: Zapala
authors.forename: Brittany
authors.initials: B
authors.lastname: Burkhardt
authors.forename: Kurt
authors.initials: K
authors.lastname: Walker
authors.forename: Larry
authors.initials: L
authors.lastname: Lundy
authors.forename: Janet
authors.initials: J
authors.lastname: Shelfer
authors.forename: Terri
authors.initials: T
authors.lastname: Pratt
authors.forename: Millicent
authors.initials: M
authors.lastname: Garry
authors.forename: David
authors.initials: D
authors.lastname: Walker
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods*; D000328:Adult; D005260:Female; D064368:Healthy Volunteers; D006801:Humans; D008297:Male; D008875:Middle Aged; D058585:Vestibular Evoked Myogenic Potentials / Q000502:physiology*