Clin Exp Otorhinolaryngol.  2012 Dec;5(4):188-193. 10.3342/ceo.2012.5.4.188.

The Efficiency of Simultaneous Binaural Ocular Vestibular Evoked Myogenic Potentials: A Comparative Study with Monaural Acoustic Stimulation in Healthy Subjects

• Kim MB
• Ban JH

• KMID: 1489077
• DOI: http://doi.org/10.3342/ceo.2012.5.4.188

Abstract

OBJECTIVES
To evaluate the test-retest reliability and convenience of simultaneous binaural acoustic-evoked ocular vestibular evoked myogenic potentials (oVEMP).
METHODS
Thirteen healthy subjects with no history of ear diseases participated in this study. All subjects underwent oVEMP test with both separated monaural acoustic stimulation and simultaneous binaural acoustic stimulation. For evaluating test-retest reliability, three repetitive sessions were performed in each ear for calculating the intraclass correlation coefficient (ICC) for both monaural and binaural tests. We analyzed data from the biphasic n1-p1 complex, such as latency of peak, inter-peak amplitude, and asymmetric ratio of amplitude in both ears. Finally, we checked the total time required to complete each test for evaluating test convenience.
RESULTS
No significant difference was observed in amplitude and asymmetric ratio in comparison between monaural and binaural oVEMP. However, latency was slightly delayed in binaural oVEMP. In test-retest reliability analysis, binaural oVEMP showed excellent ICC values ranging from 0.68 to 0.98 in latency, asymmetric ratio, and inter-peak amplitude. Additionally, the test time was shorter in binaural than monaural oVEMP.
CONCLUSION
oVEMP elicited from binaural acoustic stimulation yields similar satisfactory results as monaural stimulation. Further, excellent test-retest reliability and shorter test time were achieved in binaural than in monaural oVEMP.

Keyword

Ocular vestibular evoked myogenic potentials; Reproducibility of results; Vestibular function tests; Saccule and utricle; Human

MeSH Terms

Acoustic Stimulation
Acoustics
Ear
Ear Diseases
Humans
Reproducibility of Results
Saccule and Utricle
Vestibular Evoked Myogenic Potentials
Vestibular Function Tests

Figure

• 

  Fig. 1 Examples of n1-p1 complexes elicited from (A) Mon-oVEMP and (B) Bin-oVEMP. Left column means right side three repetitive session results and right column means left side repetitive test results. Compare with (B), (A) shows more different interpeak amplitude between right and left side oVEMP response. oVEMP, ocular vestibular evoked myogenic potential; Mon-oVEMP, oVEMP response using monaural separated acoustic stimulation; Bin-oVEMP, oVEMP response using binaural simultaneous acoustic stimulation.

• 

  Fig. 2 (A) Mon-oVEMP and (B) Bin-oVEMP. The dot plot of the dataset with intraclass correlation in asymmetric ratio of interpeak amplitude. The values of asymmetric ratio from same subject tend to be more similar in Bin-oVEMP than in Mon-oVEMP. oVEMP, ocular vestibular evoked myogenic potential; Mon-oVEMP, oVEMP response using monaural separated acoustic stimulation; Bin-oVEMP, oVEMP response using binaural simultaneous acoustic stimulation.

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