title: Vestibular evoked myogenic potential eliciting in normal subjects: comparison of four different methods.
abstract: OBJECTIVE
  Vestibular evoked myogenic potential (VEMP) recording is a new method for testing the otolith receptors and vestibulospinal pathways. The aim of this study was to evaluate the characteristics of VEMP using four different techniques to find reasons to prefer one type of recording over the others.
  
  
  METHODS
  Twenty healthy persons, 10 males and 10 females with ages ranging from 20 to 57 years (mean age 41 years), were enrolled in this study. Eliciting of VEMPs by using monaural or binaural acoustic stimulation and unilateral or bilateral SCM contraction was evaluated; 105 dB NHL acoustic stimulation consisting of 145 dB rarefaction clicks was applied. Latencies of p13, n23, n34, p44 peaks; amplitudes p13-n23 and n34-p44; and interaural amplitude differences (IADs) were assessed.
  
  
  RESULTS
  All four methods elicited constant and evident waveforms. The reliability coefficients of amplitudes were high for all four methods and for both waves. However, the higher scores of reliability appeared for the monaural-ipsilateral recording. The results indicated no statistically significant difference between the right and left sides for all four types of VEMP eliciting. No correlation was found between IAD13-23 and IAD34-44 for all four methods. Statistically significant differences were found only for n23 latency among the four methods.
  
  
  CONCLUSIONS
  Although no evidence to reject or strongly favour a specific method was found, the monaural-ipsilateral recording was associated with some advantages.
authors.affiliation: Department of Otolaryngology, G Gennimatas Hospital, Athens, Greece. aegika@yahoo.gr
authors.forename: Anna
authors.initials: A
authors.lastname: Eleftheriadou
authors.forename: Spyros N
authors.initials: SN
authors.lastname: Deftereos
authors.forename: Vasilios
authors.initials: V
authors.lastname: Zarikas
authors.forename: Grigoris
authors.initials: G
authors.lastname: Panagopoulos
authors.forename: Stavros
authors.initials: S
authors.lastname: Korres
authors.forename: Sotirios
authors.initials: S
authors.lastname: Sfetsos
authors.forename: Klimentini L
authors.initials: KL
authors.lastname: Karageorgiou
authors.forename: Elisa
authors.initials: E
authors.lastname: Ferekidou
authors.forename: Dimitrios
authors.initials: D
authors.lastname: Kandiloros
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods*; D000328:Adult; D005072:Evoked Potentials, Auditory; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012016:Reference Values; D012680:Sensitivity and Specificity; D014724:Vestibular Function Tests / Q000379:methods*; D014722:Vestibule, Labyrinth / Q000502:physiology*; D055815:Young Adult