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Vestibular-evoked myogenic potentials in miniature pigs

         

摘要

Objective:To report detection of vestibular-evoked myogenic potentials (VEMPs) 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 Carbachol 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 successful 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 thresholds of VEMPs recorded from the neck extensor muscle and the masseter muscle appear to be comparable in normal adult Bama miniature pigs, although the amplitude recorded from the neck extensor muscle seems to be higher than that from the masseter muscle. 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.

著录项

  • 来源
    《中华耳科学杂志(英文版)》 |2016年第002期|88-96|共9页
  • 作者单位

    a Institute of Audiology and Balance Science, Xuzhou Medical University, China;

    Department of 0torhinolaryngology Head and Neck Surgery, First Hospital of Jilin University, Changchun, Jilin 130021, China;

    a Institute of Audiology and Balance Science, Xuzhou Medical University, China;

    a Institute of Audiology and Balance Science, Xuzhou Medical University, China;

    a Institute of Audiology and Balance Science, Xuzhou Medical University, China;

    a Institute of Audiology and Balance Science, Xuzhou Medical University, China;

    a Institute of Audiology and Balance Science, Xuzhou Medical University, China;

    a Institute of Audiology and Balance Science, Xuzhou Medical University, China;

    Department of 0tolaryngologydHead&Neck Surgery, Institute of 0tolaryngology of PLA, Chinese PLA General Hospital, Beijing 100853, China;

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  • 正文语种 eng
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