title: Test-retest reliability of binaural simultaneous cervical vestibular evoked myogenic potential recording.
abstract: OBJECTIVE
  The purpose of this study is to compare the test-retest reliability of cervical vestibular evoked myogenic potential (cVEMP) parameters between monaural sequential (mSEQ) cVEMP and binaural simultaneous (bSIM) cVEMP recordings.
  
  
  METHODS
  Twenty two volunteers aged 22 from 38 years were enrolled. Two different methods of cVEMP measurement were performed in the subjects. The two methods were (1) monaural sequential (mSEQ) measurement and (2) binaural simultaneous (bSIM) measurement. After a mean test-retest interval of 7.1 ± 2.8 days, the second run of the cVEMP measurement was performed in a random order. To compare the test-retest reliability of mSEQ and bSIM cVEMP responses, Intraclass correlation coefficient (ICC) and Spearman correlation were applied.
  
  
  RESULTS
  Both p13 and n23 latencies did not show a statistically significant difference between the two cVEMP recording methods. Also, there were no significant differences in the inter-peak amplitude (IPA) and interaural amplitude difference (IAD) ratio between the two methods. The test-retest reliability of inter-peak amplitude (IPA) demonstrated a positive correlation for both mSEQ and bSIM cVEMP methods. The IAD ratio of bSIM cVEMP response demonstrated a statistically significant test-retest reliability (ICC = 0.691, p= 0.015). However, the IAD ratio of mSEQ cVEMP response did not demonstrate a statistically significant test-retest correlation.
  
  
  CONCLUSIONS
  Results implicate that bSIM cVEMP not only saves time, but it also has an advantage of a more reliable test-retest outcome.
authors.affiliation: Department of Otorhinolaryngology-Head & Neck Surgery, Seoul National University Hospital, Seoul, Korea.
authors.forename: Min Young
authors.initials: MY
authors.lastname: Lee
authors.affiliation: Department of Otorhinolaryngology-Head & Neck Surgery, Seoul National University Hospital, Seoul, Korea.
authors.forename: Yeo-Jeen
authors.initials: YJ
authors.lastname: Yi
authors.affiliation: Department of Otorhinolaryngology-Head & Neck Surgery, Seoul National University Hospital, Seoul, Korea.
authors.forename: Hanaro
authors.initials: H
authors.lastname: Park
authors.affiliation: Department of Otorhinolaryngology-Head & Neck Surgery, Seoul National University Hospital, Seoul, Korea.
authors.forename: Mi Hee
authors.initials: MH
authors.lastname: Kim
authors.affiliation: Department of Otorhinolaryngology-Head & Neck Surgery, Seoul National University College of Medicine, Sensory Organ Research Institute, Seoul National University Biomedical Research Institute, Seoul, Korea.
authors.forename: Jun Ho
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Otorhinolaryngology-Head & Neck Surgery, Seoul National University College of Medicine, Sensory Organ Research Institute, Seoul National University Biomedical Research Institute, Seoul, Korea.
authors.forename: Seung-Ha
authors.initials: SH
authors.lastname: Oh
authors.affiliation: Department of Otorhinolaryngology-Head & Neck Surgery, Seoul National University Hospital, Seoul, Korea.
authors.forename: Myung-Whan
authors.initials: MW
authors.lastname: Suh
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D004576:Electromyography; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology; D011187:Posture; D015203:Reproducibility of Results; D058585:Vestibular Evoked Myogenic Potentials / Q000502:physiology*; D014722:Vestibule, Labyrinth / Q000502:physiology; D055815:Young Adult
keywords: VEMP; bilateral; cVEMP; reliability