Ocular Vestibular Evoked Myogenic Potential Using Different Test Stimuli

Dessai, Teja Deepak and Bhat, Jayashree S. and *, Kaushlendra Kumar (2013) Ocular Vestibular Evoked Myogenic Potential Using Different Test Stimuli. ISRN Otolaryngology, 2013. pp. 1-4.

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Aim. Ocular EvokedMyogenic Potential (oVEMP) are short latency potentials evoked by higher acoustic stimulation. In this study, we aimed at comparing the click, 500Hz mixed modulated, and 500Hz short duration tone burst stimuli using oVEMP. Material. Click, 500Hz mixed modulated and 500Hz short duration tone burst stimuli were used for the study. Method. Conventional sampling and conveneint study design were used. Sixty healthy subjects underwent contralateral oVEMP testing maintaining 30 degrees upward gaze. Single channel electrode montage was applied to record oVEMP response. Results. On statistical analysis the three stimuli evoked equal response rates (100%), and when latency of n1 and p1 and peak-peak amplitude were compared, the click evoked showed significantly early latency and lower peak-peak amplitude than the 500Hz stimuli. Five hundred Hz stimuli did not show significant difference in latency and peak-peak amplitude of n1-p1. Discussion.Thus, 500Hz stimuli can evoke better latency and peak-peak amplitude. oVEMP has good clinical significance in diagnosing subjects with vestibular dysfunction. To add to the sensitivity of the oVEMP test, 500Hz stimuli may also be used as it can evoke better oVEMP responses in clinical population with good morphology

Item Type: Article
Subjects: Allied Health > Mangalore Campus > Speech and Hearing
Depositing User: KMCMLR User
Date Deposited: 13 Sep 2013 11:10
Last Modified: 13 Sep 2013 11:10
URI: http://eprints.manipal.edu/id/eprint/137177

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