title: Thresholds for vestibular-evoked myogenic potentials (VEMPs) produced by impulsive transmastoid acceleration.
abstract: OBJECTIVE
  To evaluate methods for estimating thresholds of vestibular evoked myogenic potentials (VEMPs) and ocular VEMPs (OVEMPs) produced by impulsive transmastoid acceleration (ITA).
  
  
  METHODS
  VEMPs and OVEMPs were obtained simultaneously from subjects in supine posture with both head and eyes elevated. Thresholds to ITA were measured using four different response identification methods.
  
  
  METHODS
  Twelve adult subjects with no history of auditory or vestibular deficits.
  
  
  RESULTS
  VEMP and OVEMP thresholds were found within the range of -8 to -26 dB re 0.2 g, with overall VEMP thresholds being lower than OVEMP thresholds by average of 3-10 dB, depending on the method used.
  
  
  CONCLUSIONS
  VEMPs can be obtained at lower ITA stimulation levels than OVEMPs. Threshold values depend on the method used to define response presence.
authors.affiliation: * Faculty of Life Sciences, University of Manchester , UK.
authors.forename: Aurore C
authors.initials: AC
authors.lastname: Paillard
authors.forename: Karolina
authors.initials: K
authors.lastname: Kluk
authors.forename: Neil P M
authors.initials: NP
authors.lastname: Todd
mesh_terms: D000054:Acceleration; D000328:Adult; D004576:Electromyography; D019416:Head Movements; D006801:Humans; D008416:Mastoid / Q000502:physiology*; D056888:Patient Positioning; D012444:Saccule and Utricle / Q000502:physiology*; D012684:Sensory Thresholds; D016683:Supine Position; D013997:Time Factors; D058585:Vestibular Evoked Myogenic Potentials; D014732:Vibration; D055815:Young Adult