Steady State Vestibular Evoked Myogenic Potentials

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Study Classification

OBSERVATIONAL

Brief Summary

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Objective: At present, vestibular evoked myogenic potentials are analyzed only in the time domain. A technique to evaluate this potential in the frequency domain could provide more information, but has only been applied within the last year. Design and Study Sample: In this study we recorded vestibular evoked myogenic potential in the time domain, in 156 ears of 78 normal-hearing young adults, at frequencies of 250, 500, 1000 and 2000 Hz, with intensity of 90 dB nHL. Next, the steady state vestibular evoked myogenic potential was recorded at the same carrying frequencies, modulated at 20, 37, 40, 43, 70, 77 and 80 Hz. Results: The responses found by modulated frequency, regardless of carrier, recorded a higher presence of peaks and mean amplitudes between 20 and 70 Hz, especially at 40 Hz. Conclusions: The results show that the observation technique in the frequency domain is feasible and shows a strong association with the time domain for recording vestibular evoked myogenic potentials, at carrying frequencies of 250, 500, 1000 or 2000 Hz.

Detailed Description

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Conditions

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Normal Vestibular Evoked Potentials in Frequency Domain

Study Design

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Observational Model Type

COHORT

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Experimental group

The sample was composed of 78 individuals (156 ears), 40 females (80 ears) and 38 males (76 ears).

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

Inclusion criteria: age between 18 and 35 years and auditory threshold less than or equal to 20 dBHL, between 0.5 and 8 kHz, with inter-ear frequency difference less than or equal to 10 dB.

Exclusion criteria were: exposure to occupational or leisure noise; otological surgery; more than three ear infections within the last year; use of ototoxic medication; buzzing in the ear, vertigo, dizziness or other cochlear-vestibular symptoms ; presence of systemic alterations that could contribute to cochlear-vestibular pathologies, such as diabetes, hypertension, dyslipidemias and/or hormonal alterations.

Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Responsible Party

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UNCISAL

References

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de Oliveira AC, Pereira LD, Colafemina JF, de Lemos Menezes P. Amplitude modulated vestibular evoked myogenic responses: a study of carrier and modulating frequencies. Acta Otolaryngol. 2014 Aug;134(8):796-801. doi: 10.3109/00016489.2014.909605. Epub 2014 Jun 9.

Reference Type DERIVED

PMID: 24909625 (View on PubMed)

Other Identifiers

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CEP_UNCISAL_1010/2009

Identifier Type: -

Identifier Source: org_study_id