title: Comparison of ABR amplitudes with TIPtrode and mastoid electrodes.
abstract: ABR evaluations were completed for 36 adults (18 males, 18 females) having normal hearing sensitivity and for 91 adult patients having various degrees of sensorineural hearing loss. Amplitudes of waves I and V were compared for ear canal (TIPtrode) electrode and mastoid electrode recordings. Interpeak intervals (I-III, III-V, and I-V) were determined and upper 95% confidence limits defined for normative data. In general, amplitude of wave I was larger when TIPtrodes were used. Wave V amplitude was nearly identical for the two electrodes. Wave I was identified more frequently for TIPtrode than for mastoid recordings of ABR waveforms for the sensorineural hearing loss subjects.
authors.affiliation: Mayo Clinic, Department of Otorhinolaryngology, Rochester, Minnesota.
authors.forename: C D
authors.initials: CD
authors.lastname: Bauch
authors.forename: W O
authors.initials: WO
authors.lastname: Olsen
mesh_terms: D000162:Acoustics; D000328:Adult; D001300:Audiometry, Evoked Response / Q000379:methods*; D004424:Ear Canal; D004566:Electrodes; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D005260:Female; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008416:Mastoid; D008875:Middle Aged