The Influence of Clicks versus Short Tone Bursts on the Vestibular Evoked Myogenic Potentials

Cheng, Po‐Wen; Huang, Tsung‐Wei; Young, Yi‐Ho

doi:10.1097/01.aud.0000069225.80220.cb

Cited by 81 publications

(70 citation statements)

References 14 publications

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“…The stimulation rate was 5 Hz, analysis time for each response was 60 ms, and 200 responses were averaged for each run. Two consecutive runs were performed to verify the reproducibility, and the results were averaged providing the final response [8,9].…”

Section: Acoustic Stimulationmentioning

confidence: 99%

Vestibular evoked myogenic potentials: optimal stimulation and clinical application

Young

2006

J Biomed Sci

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SummaryBy easily stimulating the ear with loud sound and recording on tonically contracted neck muscles, vestibular evoked myogenic potential (VEMP) test can reflect inner ear function other than the cochlea and semicircular canal. This expands the test battery for clinicians to explore saccular disease, adding a potential usefulness to the sacculo-collic reflex. The ideal stimulation mode for VEMPs is as follows: 95 dB tone bursts, frequency 500 Hz, stimulation repetition rate 5 Hz, rise/fall time 1 ms, plateau 2 ms, binaural stimulation with bilateral recordings. Animal model using guinea pigs has been established, which sets the stage for useful future studies investigating VEMPs in guinea pigs that would appear to resemble human VEMP responses. Clinically, VEMP test has been widely used in central and peripheral vestibular disorders.

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Section: Acoustic Stimulationmentioning

confidence: 99%

Vestibular evoked myogenic potentials: optimal stimulation and clinical application

Young

2006

J Biomed Sci

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“…If the subject is relaxed and there is no load on the muscle, the vestibular-evoked response is not detected (Townsend & Cody, 1971). Response amplitudes were maximal at for 300 to 1000 Hz air-conduction brief tones presented at 95 to 100 dB nHL (Cheng, Huang & Young, 2003;Todd, Cody & Banks, 2000;Welgampola & Colebatch, 2001). Sheykholeslami, Kermany, and Kaga (2000) found that they could elicit SCM responses to 100 to 800 Hz bone-conduction brief tones and obtained maximum amplitudes for 200 and 400Hz stimuli presented at 70 dB nHL.…”

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confidence: 99%

Artifactual Responses When Recording Auditory Steady-State Responses

Small

Stapells

2004

Ear and Hearing

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Objective: The goal of this study was to investigate, in hearing-impaired participants who could not hear the stimuli, the possibility of artifactual auditory steady-state responses (ASSRs) when stimuli are presented at high intensities.Design: ASSRs to single (60 dB HL) and multiple (20 to 50 dB HL; 500 to 4000 Hz) bone-conduction stimuli as well as single 114 to 120 dB HL air-conduction stimuli, were obtained using the Rotman MASTER system, using analog-to-digital (A/D) conversion rates of 500, 1000, and 1250 Hz. Responses (p < 0.05) were considered artifactual when their numbers exceeded that expected by chance. In some conditions, we also obtained ASSRs to "alternated" stimuli (stimuli inverted and ASSRs to the two polarities averaged). A total of 17 subjects were tested. Conclusions: High-intensity air-or bone-conduction stimuli can produce spurious ASSRs, especially for 500 and 1000 Hz carrier frequencies. High-amplitude stimulus artifact can result in energy that is aliased to exactly the modulation frequency. Choice of signal conditioning (electroencephalogram filter slope and low-pass cutoff) and processing (A/D rate) can avoid spurious responses due to aliasing. However, artifactual responses due to other causes may still occur for bone-conduction stimuli 50 dB HL and higher (and possibly for high-level air conduction). Because the phases of these spurious responses do not invert with inversion of stimulus, the possibility of nonauditory physiologic responses cannot be ruled out. The clinical implications of these results are that artifactual responses may occur for any patient for bone-conduction stimuli at levels greater than 40 dB HL and for highintensity air-conduction stimuli used to assess patients with profound hearing loss. Results

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“…During the past decade, vestibular evoked myogenic potential (VEMP) has been validated to reflect the sacculocollic reflex [Colebatch et al, 1994;Uchino et al, 1997], and has been widely investigated in terms of stimulus origin [Cheng et al, 2003], recording methods [Wang and Young, 2003], clinical application [deWaele, 1999], and animal experiment [Murofushi et al, 1995]. Welgampola and Colebatch [2001] reported that the average click-evoked response amplitudes decreased with age, with a pronounced decline of 25-30% per decade from the sixth decade, indicating that age-related attenuation of click-evoked myogenic potentials was marked after age 60.…”

Section: Introductionmentioning

confidence: 99%

Vestibular Evoked Myogenic Potentials in Newborns

Chen¹,

Wang²,

Wang³

et al. 2006

Audiol Neurotol

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This study presents a novel method for recording vestibular evoked myogenic potential (VEMP) in newborns, used to investigate the maturation of sacculocollic reflex at birth.Twenty full-term newborns aged 2–5 days old were enrolled in this study. During natural sleep, each newborn underwent distortion product otoacoustic emission test, and VEMP test using the head rotation method. For comparison, 20 healthy adults also underwent VEMP test using the same method. Based on adult criteria, 40 newborn ears revealed normal VEMPs in 40%, prolonged VEMPs in 35%, and absent VEMPs in 25%, indicating that great variation exists in the maturation of the sacculocollic reflex at birth. Comparison of VEMP characteristics between healthy newborns and adults revealed nonsignificant difference in the response rate and the latency of n23. However, significant differences existed in the latency of p13, interpeak p13-n23 interval and p13-n23 amplitude between newborns and adults. In conclusion, VEMPs in newborns can be easily recorded by the head rotation method. Prolonged or absent VEMPs in newborns may reflect incomplete maturity of the sacculocollic reflex pathway, especially the myelination. A further large number of newborns receiving MRI scan for other reasons may undergo VEMP test to verify this hypothesis.

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The Influence of Clicks versus Short Tone Bursts on the Vestibular Evoked Myogenic Potentials

Cited by 81 publications

References 14 publications

Vestibular evoked myogenic potentials: optimal stimulation and clinical application

Vestibular evoked myogenic potentials: optimal stimulation and clinical application

Artifactual Responses When Recording Auditory Steady-State Responses

Vestibular Evoked Myogenic Potentials in Newborns

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