Open AccessJournal Article
Vestibular-evoked extraocular potentials produced by stimulation with bone-conducted sound
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TLDR
Vestibular-evoked extraocular potentials extend the range of vestibular pathways that can be assessed electrophysiologically, and may be a useful additional test of Vestibular function.Abstract:
Objective: To investigate the origin, whether ocular or extraocular, of the short latency frontal potential (N15) reported by Todd et al. (2003) following vestibular stimulation. Methods: Fourteen subjects with low VEMP thresholds (VT) and 9 patients with vestibular or ocular disorders were stimulated at the mastoid with bone-conducted tone bursts (500 Hz, 8 ms) above vestibular threshold, using a B71 bone vibrator. Surface potentials were recorded from Fpz and around the eyes and referred to linked earlobes. Results: The N15 was present at Fpz,but was largest around the eyes (mean amplitude 2.6 μV, peak latency 13.4 ms, with stimulation at +18 dB above threshold) and was generally in phase above and below the eyes. The response was vestibular-dependent and modulated by alteration of gaze direction. The potentials were delayed in a patient with Miller Fisher syndrome and were larger in patients with superior canal dehiscence than in controls. Conclusions: We report a new vestibular-evoked extraocular potential. Its properties are not consistent with an eye movement. It is likely to be produced, mainly or exclusively, by synchronous activity in extraocular muscles (i.e. a myogenic potential). Significance: Vestibularevoked extraocular potentials extend the range of vestibular pathways that can be assessed electrophysiologically, and may be a useful additional test of vestibular function.read more
Citations
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Journal ArticleDOI
Tuning and sensitivity of the human vestibular system to low-frequency vibration
TL;DR: It is demonstrated for the first time that the human vestibular system is also extremely sensitive to low-frequency and infrasound vibrations by making use of a new technique for measuring Vestibular activation, via the vestibulo-ocular reflex (VOR).
Journal ArticleDOI
Frequency-tuning characteristics of cervical and ocular vestibular evoked myogenic potentials induced by air-conducted tone bursts
TL;DR: Cervical VEMP is a more reliable measure than ocular VEMP, though the results of both tests will be complementary, and five hundred Hertz is the optimal frequency to use.
Journal ArticleDOI
Ocular vestibular-evoked myogenic potentials to bone-conducted vibration in superior vestibular neuritis show utricular function:
TL;DR: The n10 AR is almost as good as canal paresis in identifying the affected side in patients in patients, and probably mediated by the superior vestibular nerve and so mainly by the utricular receptors.
Journal ArticleDOI
Cervical and ocular vestibular-evoked myogenic potentials in acute vestibular neuritis.
TL;DR: Dissociations in the abnormalities of cVEMP and oVEMP in patients with VN selectively involving the superior or inferior vestibular nerve suggest that the origin of the vestibul nerve afferents of oV EMP differ from those of cCVEMP.
Journal ArticleDOI
Characteristics and clinical applications of ocular vestibular evoked myogenic potentials.
C. Kantner,Robert Gürkov +1 more
TL;DR: Ocular vestibular evoked myogenic potentials (oVEMPs) have been described and added to the neuro-otologic test battery as a new measure for the vestibulo-ocular reflex and are becoming a promising new diagnostic tool for evaluating utricular function.
References
More filters
Journal ArticleDOI
Tuning and sensitivity of the human vestibular system to low-frequency vibration
TL;DR: It is demonstrated for the first time that the human vestibular system is also extremely sensitive to low-frequency and infrasound vibrations by making use of a new technique for measuring Vestibular activation, via the vestibulo-ocular reflex (VOR).
Journal ArticleDOI
Frequency-tuning characteristics of cervical and ocular vestibular evoked myogenic potentials induced by air-conducted tone bursts
TL;DR: Cervical VEMP is a more reliable measure than ocular VEMP, though the results of both tests will be complementary, and five hundred Hertz is the optimal frequency to use.
Journal ArticleDOI
Ocular vestibular-evoked myogenic potentials to bone-conducted vibration in superior vestibular neuritis show utricular function:
TL;DR: The n10 AR is almost as good as canal paresis in identifying the affected side in patients in patients, and probably mediated by the superior vestibular nerve and so mainly by the utricular receptors.
Journal ArticleDOI
Cervical and ocular vestibular-evoked myogenic potentials in acute vestibular neuritis.
TL;DR: Dissociations in the abnormalities of cVEMP and oVEMP in patients with VN selectively involving the superior or inferior vestibular nerve suggest that the origin of the vestibul nerve afferents of oV EMP differ from those of cCVEMP.
Journal ArticleDOI
Characteristics and clinical applications of ocular vestibular evoked myogenic potentials.
C. Kantner,Robert Gürkov +1 more
TL;DR: Ocular vestibular evoked myogenic potentials (oVEMPs) have been described and added to the neuro-otologic test battery as a new measure for the vestibulo-ocular reflex and are becoming a promising new diagnostic tool for evaluating utricular function.
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