Preliminary Study on Vestibular-Evoked Myogenic Potential Induced by Bone-Conducted Stimuli

Miyamoto, Atsushi; Seo, Toru; Node, Michiko; Hashimoto, Misako; Sakagami, Masafumi

doi:10.1097/01.mao.0000231599.33585.c6

Cited by 19 publications

(17 citation statements)

References 16 publications

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“…As previously mentioned, there has been relatively little data directly comparing the cVEMP in response to AC versus BC stimuli within the same study. Miyamoto et al (2006) evaluated the interaural amplitude ratios to both AC and BC stimuli and found them to be highly correlated (Miyamoto et al 2006), whereas Sheykholeslami et al (2000) reported that cVEMPs evoked by BC tonebursts were shorter in latency than those evoked by AC tonebursts (Sheykholeslami et al 2000). Welgampola et al (2003) reported lower cVEMP thresholds in response to BC as compared with AC stimuli (Welgampola et al 2003).…”

Section: Ac Versus Bc Stimulimentioning

confidence: 96%

The Vestibular Evoked Myogenic Potential (VEMP): Air- Versus Bone-Conducted Stimuli

McNerney

Burkard

2011

Ear &Amp; Hearing

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The present experiment provided a direct comparison of the cVEMP in response to AC versus BC 500 Hz short-duration toneburst stimuli in the same subjects. The results of the present experiment also provide insight into the laterality of the cVEMP response and reveal that the cVEMP may not be completely ipsilateral (i.e., there may be a form of bilateral interaction that occurs when both sides are stimulated simultaneously). Last, the results indicate that BC stimuli likely activates the saccule as well as the utricle, given that AC VEMPs can be masked by the administration of BC masking noise presented to the midline.

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Section: Ac Versus Bc Stimulimentioning

confidence: 96%

The Vestibular Evoked Myogenic Potential (VEMP): Air- Versus Bone-Conducted Stimuli

McNerney

Burkard

2011

Ear &Amp; Hearing

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“…A large amount of data has been obtained by changing several parameters, such as electrode positioning, patient position (e.g., supine, sitting), stimulus type (e.g., tone burst, click), and stimulus application (air or bone conduction) [1][2][3][4][5] . Current literature reports a VEMP response rate of 80-100% [2,3] .…”

Section: Discussionmentioning

confidence: 99%

Comparison of Tone Burst, Click and Chirp Stimulation in Vestibular Evoked Myogenic Potential Testing in Healthy People

Czigler

Sullivan²

2015

Int Adv Otol

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OBJECTIVE: Vestibular evoked myogenic potential (VEMP) is a clinical test used in the diagnosis of vestibular diseases. VEMP uses several stimulants to stimulate the vestibular system and measure myogenic potentials. The aim of this study was to compare the effects of tone burst, click, and chirp stimulation in VEMP on the latency and amplitude of myogenic potentials. MATERIALS and METHODS:We compared the results of 78 ears from 39 volunteers. We measured the sternocleidomastoid muscle potential of each ear following a 500-Hz tone burst, click, and chirp stimulation while in a sitting position and evaluated the latency and amplitude. RESULTS:The tone burst stimulus resulted in waves with longer latency (15.8±1.9 ms) but higher amplitude (35.9±17.1 µV) compared with the other stimuli, and the chirp stimulus resulted in waves with shorter latency (9.9±2.4 ms) but lower amplitude (33±18.6 µV) (p<0.001). The VEMP asymmetry ratio did not significantly differ. CONCLUSION:Because the amplitudes and latencies of different stimuli significantly differ, further studies including more patients and stimulus types are needed to obtain standardized VEMP protocols.

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“…Many authors consequently normalize the VEMP amplitude by dividing it by a measure of the muscle tone (e.g. Karino et al, 2005;Welgampola and Colebatch, 2005;Miyamoto et al, 2006;Brantberg et al, 2007;Sandhu and Bell, 2008;Seo et al, 2008;Brantberg and Verrecchia, 2009 providing an unequivocal signature of the inhibition arising from the vestibular end organs.…”

Section: Introductionmentioning

confidence: 99%

Modeling the vestibular evoked myogenic potential

Lütkenhöner¹,

Stoll²,

Basel³

2010

Journal of Theoretical Biology

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Measuring the vestibular evoked myogenic potential (VEMP) promises to become a routine method for assessing vestibular function, although the technique is not yet standardized. To overcome the problem that the VEMP amplitude depends not only on the inhibition triggered by the acoustic stimulation of the vestibular end organs in the inner ear, but also on the tone of the muscle from which the potential is recorded, the VEMP is often normalized by dividing through a measure of the electromyogram (EMG) activity. The underlying idea is that VEMP amplitude and EMG activity are proportional. But this would imply that the muscle tone is irrelevant for a successful VEMP recording, contradicting experimental evidence. Here, an analytical model is presented that allows to resolve the contradiction. The EMG is modeled as the sum of motor unit action potentials (MUAPs). A brief inhibition can be characterized by its equivalent rectangular duration (ERD), irrespective of the actual time course of the inhibition. The VEMP resembles a polarity-inverted MUAP under such circumstances. Its amplitude is proportional to both the ERD and the MUAP rate. The EMG activity, by contrast, is proportional to the square root of the MUAP rate. Thus, the normalized VEMP still depends on the muscle tone. To avoid confounding effects of the muscle tone, the standard deviation of the EMG could be considered. But the inhibition effect on the standard deviation is small so that the measuring time would have to be much longer than usual today.

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Preliminary Study on Vestibular-Evoked Myogenic Potential Induced by Bone-Conducted Stimuli

Abstract: The results of B-VEMP were almost the same as those for A-VEMP, at least, for patients without conductive hearing loss.

Cited by 19 publications

References 16 publications

The Vestibular Evoked Myogenic Potential (VEMP): Air- Versus Bone-Conducted Stimuli

The Vestibular Evoked Myogenic Potential (VEMP): Air- Versus Bone-Conducted Stimuli

Comparison of Tone Burst, Click and Chirp Stimulation in Vestibular Evoked Myogenic Potential Testing in Healthy People

Modeling the vestibular evoked myogenic potential

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