Comparison of vestibular evoked myogenic potentials elicited by click and short duration tone burst stimuli

Kumar, Kaushlendra; Sinha, Sujeet Kumar; Bharti, Ashutosh Kumar; Barman, Animesh

doi:10.1017/s0022215110001908

Cited by 20 publications

(14 citation statements)

References 17 publications

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“…Peak-peak amplitude was significantly high for 500 Hz short duration tone burst when compared with click stimuli. Similar findings have been reported by [9, 11] using cVEMP response. …”

Section: Discussionsupporting

confidence: 92%

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Ocular Vestibular Evoked Myogenic Potential Using Different Test Stimuli

Deepak

Bhat

Kumar

2013

ISRN Otolaryngology

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Aim. Ocular Evoked Myogenic Potential (oVEMP) are short latency potentials evoked by higher acoustic stimulation. In this study, we aimed at comparing the click, 500 Hz mixed modulated, and 500 Hz short duration tone burst stimuli using oVEMP. Material. Click, 500 Hz mixed modulated and 500 Hz 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 500 Hz stimuli. Five hundred Hz stimuli did not show significant difference in latency and peak-peak amplitude of n1-p1. Discussion. Thus, 500 Hz 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, 500 Hz stimuli may also be used as it can evoke better oVEMP responses in clinical population with good morphology.

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“…Peak-peak amplitude was significantly high for 500 Hz short duration tone burst when compared with click stimuli. Similar findings have been reported by [9, 11] using cVEMP response. …”

Section: Discussionsupporting

confidence: 92%

“…Larger VEMP amplitudes with 500 Hz tone bursts than with 1000 Hz and 2000 Hz tone bursts were observed [10]. Short latency was observed for click evoked cVEMP as compared to short duration tone burst stimuli [9, 11]. These authors reported a higher response rate for the click stimuli than the short duration tone burst stimuli.…”

Section: Introductionmentioning

confidence: 99%

Ocular Vestibular Evoked Myogenic Potential Using Different Test Stimuli

Deepak

Bhat

Kumar

2013

ISRN Otolaryngology

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“…The non-inverting electrode was placed at the midpoint of the SCM of the side being evaluated and the inverting electrode was the sternoclavicular junction, with the forehead serving as the site for the ground electrode. The stimulus utlised for recording cVEMP was 500 Hz tone burst stimulus (2 msec rise time, 2 msec fall time, 0 msec plateau time, Blackmann window) as 500 Hz tone burst stimulus gives better amplitude compared to the click stimulus [17]. The responses were filtered from 30 Hz to 1500 Hz.…”

Section: Cervical Vestibular-evoked Myo Genic Potentials (Cvemps)mentioning

confidence: 99%

Cervical vestibular evoked myogenic potentials and caloric test results in individuals with auditory neuropathy spectrum disorders

Sujeet

Niraj

Barman

et al. 2014

VES

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Auditory neuropathy spectrum disorder is a type of hearing loss where outer hair cell function are normal (as evidenced by the preservation of OAEs and cochlear microphonics), whereas auditory nerve functions are abnormal (as evidenced by abnormal auditory brainstem evoked potentials beginning with wave I of the ABR) and acoustic reflexes to ipsilateral and contralateral tones are absent [32]. It is likely that in cases with auditory neuropathy spectrum disorder not only the cochlear nerve, but also the vestibular nerves might get involved. The present study was conducted with an aim of finding out the inferior and superior vestibular nerve involvement through cervical vestibular evoked myogenic potentials and Caloric test results respectively in individuals with Auditory Neuropathy Spectrum Disorders. Total 26 participants who fulfilled the criteria of auditory neuropathy spectrum disorder participated for the study. Vestibular evoked myogenic potentials results showed absence of responses from most of the subjects also caloric responses showed bilateral hypofunctional responses in most of the participants, which is suggestive of involvement of both the inferior as well as superior vestibular nerve in individuals with auditory neuropathy spectrum disorders. Additionally there was no association between the pattern and degree of hearing loss to caloric test results and vestibular evoked myogenic potentials results findings.

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“…STBs of 500 Hz have been reported to evoke more robust and clear cVEMP responses compared to clicks as well as 1 and 2 kHz STBs [25]. However, paradoxical and uncomplimentary findings have also been reported wherein clicks were reported to produce earlier latencies of the individual peaks though not larger amplitudes of cVEMP [11]. The differences in the findings might well be attributed to use of different rise/fall and plateau times by the two set of authors.…”

Section: Introductionmentioning

confidence: 99%

“…The differences in the findings might well be attributed to use of different rise/fall and plateau times by the two set of authors. Murofushi et al [25] used 1 ms rise/fall time and 2 ms plateau time where as Kumar et al [11] used 2 ms rise/fall time ramped through a Blackman's window which implies a plateau time of 0 ms. These differences in the stimulus rise/fall and plateau times might probably have resulted in the differences between the findings of the two studies.…”

Section: Introductionmentioning

confidence: 99%

The effect of rise/fall time of 500 Hz short tone bursts on cervical vestibular evoked myogenic potential

Singh

Apeksha

2014

VES

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BACKGROUND: Cervical vestibular evoked myogenic potential (cVEMP) is a biphasic potential recorded from the Sternocleidomastoid muscle in response to loud acoustic stimulation and assesses the intactness of the Sacculocolic pathway. The literature on clinical utility of cVEMP has been growing rapidly, though not without inconsistencies despite involving alike population. A close scrutiny of the methods across such studies revealed an inconsistent use of stimulus parameters; especially rise/fall times (RFTs). However the effect of RFTs on cVEMP has been largely unexplored. OBJECTIVE: The study aimed at exploring the effect of varying RFTs on cVEMP and obtaining optimum RFT to enable reliable recording of cVEMPs. METHODS: The cVEMPs were recorded from both ears of 30 healthy individuals with normal audio-vestibular system using 500 Hz short tone-bursts (STBs) at 95 dB nHL and varying the RFTs from 1 to 8 ms at all integer values. RESULTS: There was significant prolongation of latencies with increasing RFTs (p < 0.05). The largest amplitudes were obtained for 2 to 3 ms RFTs, though significantly smaller amplitude was obtained only for 8 ms RFT (p < 0.05), thereby rendering 8 ms RFT unfit for cVEMP recording. The 1 ms RFT produced smallest variability across individuals and would also result in lesser duration of exposure to loud sound. CONCLUSIONS: The RFT of 1 ms of 500 Hz STBs are optimum for recording cVEMPs. This is owing to large amplitudes and least variability demonstrated for this RFT.

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Comparison of vestibular evoked myogenic potentials elicited by click and short duration tone burst stimuli

Cited by 20 publications

References 17 publications

Ocular Vestibular Evoked Myogenic Potential Using Different Test Stimuli

Ocular Vestibular Evoked Myogenic Potential Using Different Test Stimuli

Cervical vestibular evoked myogenic potentials and caloric test results in individuals with auditory neuropathy spectrum disorders

The effect of rise/fall time of 500 Hz short tone bursts on cervical vestibular evoked myogenic potential

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