Enhancing the reproducibility of ocular vestibular evoked myogenic potentials by use of a visual target originating from a head-mounted laser

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• 作者：Claudia Jerin ; Klaus Bartl ; Erich Schneider…
• 关键词：Vestibular evoked myogenic potential ; VEMP ; oVEMP ; Gaze
• 刊名：European Archives of Oto-Rhino-Laryngology
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：272
• 期：10
• 页码：2737-2740
• 全文大小：557 KB
• 参考文献：1.Kantner C, Gürkov R (2012) Characteristics and clinical applications of ocular vestibular evoked myogenic potentials. Hear Res 294:55-3CrossRef PubMed
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• 作者单位：Claudia Jerin (1)
  Klaus Bartl (1)
  Erich Schneider (1) (2)
  Robert Gürkov (1) (3)
  
  1. German Center for Vertigo and Balance Disorders, Grosshadern Medical Center, University of Munich, Marchioninistr. 15, 81377, Munich, Germany
  2. Brandenburg Institute of Technology, Cottbus - Senftenberg, Germany
  3. Department of Otorhinolaryngology - Head and Neck Surgery, Grosshadern Medical Center, University of Munich, Munich, Germany
  
• 刊物类别：Medicine
• 刊物主题：Medicine & Public Health
  Otorhinolaryngology
  Neurosurgery
  Head and Neck Surgery
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1434-4726

文摘

Ocular vestibular evoked myogenic potentials (oVEMPs) represent extraocular muscle activity in response to vestibular stimulation. oVEMP amplitudes are known to increase with increasing upward gaze angle, while the patient fixates a visual target. We investigated two different methods of presenting a visual target during oVEMP recordings. 57 healthy subjects were enrolled in this study. oVEMPs were elicited by 500 Hz air-conducted tone bursts while the subjects were looking upward at a marking which was either fixed on the wall or originated from a head-mounted laser attached to a headband, in either case corresponding to a 35° upward gaze angle. oVEMP amplitudes and latencies did not differ between the subjects looking at the fixed marking and the ones looking at the laser marking. The intra-individual standard deviation of amplitudes obtained by two separate measurements for each subject, however, as a measure of test–retest reliability, was significantly smaller for the laser headband group (0.60) in comparison to the group looking at the fixed marking (0.96; p = 0.007). The intraclass correlation coefficient revealed better test–retest reliability for oVEMP amplitudes when using the laser headband (0.957) than using the fixed marking (0.908). Hence, the use of a visual target originating from a headband enhances the reproducibility of oVEMPs. This might be due to the fact that the laser headband ensures a constant gaze angle and rules out the influence of small involuntary head movements on the gaze angle. Keywords Vestibular evoked myogenic potential VEMP oVEMP Gaze