title: Vestibular evoked myogenic potentials using low frequency stimuli.
abstract: Vestibular evoked myogenic potentials are vestibulocervical reflexes resulting from sacculus stimulation with strong intensity sounds. Normality parameters are necessary for young normal individuals, using low frequency stimuli, which configure the most sensitive region of this sensory organ.
  
  
  OBJECTIVE
  To establish vestibular evoked myogenic potential standards for low frequency stimulation.
  
  
  METHODS
  Vestibular evoked myogenic potential was captured from 160 ears, in the ipsilateral sternocleidomastoid muscle, using 200 averaged tone-burst stimuli, at 250 Hz, with an intensity of 95 dB NAn.
  
  
  METHODS
  Clinical observational cross-sectional.
  
  
  RESULTS
  Neither the student's t-test nor the Mann-Whitney test showed a significant difference in latency or vestibular evoked myogenic potential amplitudes, for p <; 0.05. Irrespective of gender, we found latencies of p13-n23 and p13-n23 interpeaks of 13.84 ms (± 1.41), 23.81 ms (± 1.99) and 10.62 ms (± 6.56), respectively. Observed values for amplitude asymmetry between the ears were equal to 13.48% for females and 3.81% for males.
  
  
  CONCLUSIONS
  Low frequency stimuli generate vestibular evoked myogenic potentials, with adequate morphology and amplitude, thereby enabling the establishment of standard values for normal individuals at this frequency.
authors.affiliation: Faculdade de Medicina de Ribeirão Preto- USP, Universidade Federal de Sergipe.
authors.forename: Aline Cabral de
authors.initials: AC
authors.lastname: Oliveira
authors.forename: José Fernando
authors.initials: JF
authors.lastname: Colafêmina
authors.forename: Pedro de Lemos
authors.initials: Pde L
authors.lastname: Menezes
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods*; D000293:Adolescent; D000328:Adult; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D011930:Reaction Time; D012016:Reference Values; D012737:Sex Factors; D018709:Statistics, Nonparametric; D058585:Vestibular Evoked Myogenic Potentials / Q000502:physiology*; D055815:Young Adult