Ocular Vestibular Evoked Myogenic Potentials Via Bone-Conducted Vibrations Applied to Various Midsagittal Cranial Sites

Lin, Chi-Maw; Wang, Shou-Jen; Young, Yi‐Ho

doi:10.1097/mao.0b013e3181c2a0e1

Cited by 33 publications

(15 citation statements)

References 18 publications

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“…The stimulation rate was 5 Hz, with the analysis time for each response of 60 ms, and 30 responses were averaged for each run. Bilateral oVEMPs were recorded simultaneously [Lin et al, 2010].…”

Section: Ovemp Test Using Bcv Modementioning

confidence: 99%

Localization and Prevalence of Hydrops Formation in Ménière’s Disease Using a Test Battery

2010

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This study investigated the localization and prevalence of hydrops formation in 20 patients with unilateral Ménière’s disease using a battery of tests, including audiometry, caloric, ocular vestibular evoked myogenic potential (oVEMP) and cervical VEMP (cVEMP) tests. The latter two tests used air-conducted sound (ACS) and bone-conducted vibration (BCV) as stimuli. Thirteen patients (65%) had abnormal hearing with a 4-tone average >26 dBHL. In the caloric test, 4 patients (20%) had abnormal responses, including canal paresis in 3 and caloric areflexia in 1 patient. The percentages of patients with abnormal ACS-oVEMP, BCV-oVEMP, ACS-cVEMP, and BCV-cVEMP tests were 65, 25, 45, and 25% in affected ears, and 40, 0, 15, and 0% in unaffected ears, respectively. Although ACS- and BCV-oVEMP results differed significantly, ACS- and BCV-cVEMP results did not, regardless of the affected or unaffected ears. Thus, the abnormal rates for hearing, ACS-cVEMP, BCV-oVEMP, and caloric tests in affected ears were 65, 45, 25, and 20%, respectively. This decreasing order of abnormal percentages in function of the cochlea, saccule, utricle, and semicircular canals mimics the declining sequence of hydrops formation in temporal bone studies. In conclusion, an inner ear test battery comprising audiometry, caloric, oVEMP, and cVEMP tests may provide further insight into the localization and prevalence of hydrops formation in Ménière’s disease.

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Section: Ovemp Test Using Bcv Modementioning

confidence: 99%

Localization and Prevalence of Hydrops Formation in Ménière’s Disease Using a Test Battery

2010

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“…The stimulation rate was 5 Hz, with the analysis time for each response of 60 ms, and 30 responses were averaged for each run. Bilateral oVEMPs were recorded simultaneously (13).…”

Section: Ovemp Testmentioning

confidence: 99%

Aging Effect on the Ocular Vestibular-Evoked Myogenic Potentials

Tseng¹,

Chou²,

Young³

2010

Otology &Amp; Neurotology

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“…On the other hand, Iwasaki et al (2008a) found no difference between oVEMPs produced by head taps to the hairline and inion. In another study (Lin et al 2010), these responses differed in the latency of their first negative peak. The authors explained this finding by the differing conduction velocities of BC sound when stimuli were applied to the anterior sites of the head compared to the inion.…”

Section: Introductionmentioning

confidence: 92%

Direction-dependent excitatory and inhibitory ocular vestibular-evoked myogenic potentials (oVEMPs) produced by oppositely directed accelerations along the midsagittal axis of the head

2011

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Oppositely directed displacements of the head need oppositely directed vestibulo-ocular reflexes (VOR), i.e. compensatory responses. Ocular vestibular-evoked myogenic potentials (oVEMPs) mainly reflect the synchronous extraocular muscle activity involved in the process of generating the VOR. The oVEMPs recorded beneath the eyes when looking up represent electro-myographic responses mainly of the inferior oblique muscle. We aimed: (1) to study the properties of these responses as they were produced by head acceleration impulses to the forehead and to the back of the head; (2) to investigate the relationships between these responses and the 3-D linear head accelerations that might reflect the true stimulus that acts on the vestibular hair cells. We produced backward- and forward-directed acceleration stimuli in four conditions (positive and negative head acceleration impulses to the hairline and to the inion) in 16 normal subjects. The oVEMPs produced by backward- and forward-directed accelerations of the head showed consistent differences. They were opposite in the phase. The responses produced by backward accelerations of the head began with an initial negativity, n11; conversely, those produced by accelerations directed forward showed initially a positive response, p11. There was a high inter-subject correlation of head accelerations along the head anteroposterior and transverse axes, but almost no correlation of accelerations along the vertical axis of the head. We concluded that backward-directed head accelerations produced an initial excitatory response, and forward-directed accelerations of the head were accompanied by an initial inhibitory response. These responses showed dependence on acceleration direction in the horizontal plane of the head. This could be consistent with activation of the utricle.

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Ocular Vestibular Evoked Myogenic Potentials Via Bone-Conducted Vibrations Applied to Various Midsagittal Cranial Sites

Abstract: The Fpz may be the optimal site for BCV stimulation for screening oVEMPs in reflex magnitude.

Cited by 33 publications

References 18 publications

Localization and Prevalence of Hydrops Formation in Ménière’s Disease Using a Test Battery

Localization and Prevalence of Hydrops Formation in Ménière’s Disease Using a Test Battery

Aging Effect on the Ocular Vestibular-Evoked Myogenic Potentials

Direction-dependent excitatory and inhibitory ocular vestibular-evoked myogenic potentials (oVEMPs) produced by oppositely directed accelerations along the midsagittal axis of the head

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