Properties of binaural vestibular evoked myogenic potentials elicited with air-conducted and bone-conducted tone bursts.

Full Abstract

The purpose of this investigation was to compare the effects of monaural and binaural stimulation on unilaterally-measured vestibular evoked myogenic potential (VEMP) magnitude and latency. The subjects were eighteen normal-hearing adults with no history of vestibular disease. Monaural VEMPs were acquired with air-conducted (AC) and bone-conducted (BC) 500 Hz tone bursts presented at 95 dB nHL and 70 dB nHL, respectively. These stimuli were simultaneously paired with 95 dB nHL contralateral tone bursts at 250, 500, 750, or 1000 Hz during acquisition of binaural VEMPs. Results indicated that AC-VEMP relative magnitudes decreased in each of the binaural conditions compared to the monaural condition. However, no changes in relative magnitude between conditions occurred for BC-VEMPs. Similar latencies were observed for monaural and binaural VEMPs. Differences in bilateral interaction seen between the AC-VEMP and BC-VEMP conditions are consistent with modification of sound transmission through the ear during presentations of binaural sound.

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Author information

Author/s: Bhagat, Shaum P (SP);

Affiliation: The University of Memphis, School of Audiology and Speech-Language Pathology, Memphis, TN 38015, USA. sbhagat(-atsign-)memphis.edu

Journal and publication information

Publication Type: Journal Article

Journal: International journal of audiology (Int J Audiol), published in England. (Language: eng)

Reference: 2006-Oct; vol 45 (issue 10) : pp 609-16

Dates: Created 2006/10/25; Completed 2007/03/01; Revised 2007/11/15;

PMID: 17062503, status: MEDLINE (last retrieval date: 12/26/2008)

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Acoustic Stimulation
Adolescent
Adult
Bone Conduction - physiology
Electromyography - methods
Evoked Potentials, Auditory - physiology

Female
Humans
Male
Neck Muscles - physiology
Vestibular Function Tests
Vestibule, Labyrinth - physiology

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