Vestibular-evoked myogenic potentials in miniature pigs
Abstract：Objective To report detection of vestibular-evoked myogenic potentials (VEMP) in the miniature pig. Methods Potentials evoked by 1000 Hz tone bursts were recorded from neck extensor muscles and the masseter muscles in normal adult Bama miniature pigs anesthetized with 3%pentobarbital sodium and Sumianxin II. Results The latency of the first positive wave P from neck extensor muscles was 7.65 ± 0.64 ms, with an amplitude of 1.66 ± 0.34 uv and a rate of suc-cessful induction of 75%at 80 dB SPL. The latency of potentials evoked from the masseter muscles was 7.60±0.78 ms, with an amplitude of 1.31 ± 0.28 uv and a rate successful induction of 66%at 80 dB SPL. Conclusion The latencies and thresh-olds of VEMPs recorded from neck extensor muscles and the masseter muscles appear to be comparable in normal adult Bama miniature pigs, although the amplitude recorded from neck extensor muscles seems to be higher than that from the masseter muscles. However, because of their usually relatively superficial and easily accessible location, as well as their large volume and strong contractions, masseter muscles may be better target muscles for recording myogenic potentials.
Keywords：vestibular evoked myogenic potentialsminiature pigmasseter myogenic potential
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 21-26 )