title: Normal brief-tone bone-conduction behavioral thresholds using the B-71 transducer: three occlusion conditions.
abstract: Behavioral thresholds were measured from 31 adults with normal hearing for 500, 1000, 2000, and 4000 Hz brief tones presented using a B-71 bone oscillator. Three occlusion conditions were assessed: ears unoccluded, one ear occluded, and both ears occluded. Mean threshold force levels were 67, 54, 49, and 41 dB re:1 microN peak-to-peak equivalent in the unoccluded condition for 500, 1000, 2000, and 4000 Hz, respectively (corrected for air-conduction pure-tone thresholds). A significant occlusion effect was observed for 500 and 1000 Hz stimuli. These thresholds may be used as the 0 dB nHL (normal-hearing level) for brief-tone bone-conduction stimuli for auditory brainstem response testing.
authors.affiliation: School of Audiology and Speech Sciences, University of British Columbia, Vancouver, BC, Canada.
authors.forename: Susan A
authors.initials: SA
authors.lastname: Small
authors.forename: David R
authors.initials: DR
authors.lastname: Stapells
mesh_terms: D000161:Acoustic Stimulation / Q000523:psychology; D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001309:Auditory Threshold / Q000502:physiology*; D001844:Bone Conduction / Q000502:physiology*; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D005260:Female; D006309:Hearing / Q000502:physiology; D006801:Humans; D008297:Male