The Effect of Repetition Rate on Air-Conducted Ocular Vestibular Evoked Myogenic Potentials (oVEMPs)

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. Ten healthy adults were evalu...

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Bibliographic Details
Published in:American journal of audiology 2015-09, Vol.24 (3), p.411-418
Main Authors: Bogle, Jamie M, Zapala, David A, Burkhardt, Brittany, Walker, Kurt, Lundy, Larry, Shelfer, Janet, Pratt, Terri, Garry, Millicent, Walker, David
Format: Article
Language:English
Subjects:
Acoustic Stimulation - methods
Adult
Care and treatment
Diagnosis
Electrodes
Evidence
Evoked potentials (Electrophysiology)
Feedback (Response)
Female
Healthy Volunteers
Hearing disorders
Humans
Male
Middle Aged
Physiological aspects
Repetition
Stimuli
Vestibular Evoked Myogenic Potentials - physiology
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Summary: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. 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. 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. 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.
ISSN:1059-0889
1558-9137
DOI:10.1044/2015_AJA-15-0011