title: Comparison of Tone Burst, Click and Chirp Stimulation in Vestibular Evoked Myogenic Potential Testing in Healthy People.
abstract: OBJECTIVE
  Vestibular evoked myogenic potential (VEMP) is a clinical test used in the diagnosis of vestibular diseases. VEMP uses several stimulants to stimulate the vestibular system and measure myogenic potentials. The aim of this study was to compare the effects of tone burst, click, and chirp stimulation in VEMP on the latency and amplitude of myogenic potentials.
  
  
  METHODS
  We compared the results of 78 ears from 39 volunteers. We measured the sternocleidomastoid muscle potential of each ear following a 500-Hz tone burst, click, and chirp stimulation while in a sitting position and evaluated the latency and amplitude.
  
  
  RESULTS
  The tone burst stimulus resulted in waves with longer latency (15.8±1.9 ms) but higher amplitude (35.9±17.1 µV) compared with the other stimuli, and the chirp stimulus resulted in waves with shorter latency (9.9±2.4 ms) but lower amplitude (33±18.6 µV) (p<0.001). The VEMP asymmetry ratio did not significantly differ.
  
  
  CONCLUSIONS
  Because the amplitudes and latencies of different stimuli significantly differ, further studies including more patients and stimulus types are needed to obtain standardized VEMP protocols.
authors.affiliation: Department of Otorhinolaryngology, Recep Tayyip Erdoğan University Faculty of Medicine, Rize, Turkey. akozgur53@gmail.com.
authors.forename: Abdulkadir
authors.initials: A
authors.lastname: Özgür
authors.forename: Özlem
authors.initials: Ö
authors.lastname: Çelebi Erdivanlı
authors.forename: Zerrin
authors.initials: Z
authors.lastname: Özergin Coşkun
authors.forename: Suat
authors.initials: S
authors.lastname: Terzi
authors.forename: Enes
authors.initials: E
authors.lastname: Yiğit
authors.forename: Münir
authors.initials: M
authors.lastname: Demirci
authors.forename: Engin
authors.initials: E
authors.lastname: Dursun
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods*; D000293:Adolescent; D000328:Adult; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012016:Reference Values; D015837:Vestibular Diseases / Q000175:diagnosis* / Q000503:physiopathology; D058585:Vestibular Evoked Myogenic Potentials / Q000502:physiology*; D014722:Vestibule, Labyrinth / Q000503:physiopathology*; D055815:Young Adult