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Nystagmus induced by high frequency vibrations of the skull in total unilateral peripheral vestibular lesions.

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Title: Nystagmus induced by high frequency vibrations of the skull in total unilateral peripheral vestibular lesions.
Authors: Dumas, Georges (AUTHOR), Perrin, Philippe (AUTHOR), Schmerber, Sébastien (AUTHOR)
Source: Acta Oto-Laryngologica. Mar2008, Vol. 128 Issue 3, p255-262. 8p. 1 Black and White Photograph, 2 Charts, 3 Graphs.
Subjects: Nystagmus, Vestibular apparatus diseases, Physiological effects of vibration, Noninvasive diagnostic tests, Skull
Abstract: Conclusion. The skull vibration-induced nystagmus test (SVINT) is a useful complementary test to the caloric test, which evaluates very low frequencies, and the head shaking test (HST), which explores medium range frequencies. These three tests are fully correlated in total unilateral vestibular lesions (tUVL) with a sensitivity of 98% and a specificity of 94% for the SVINT. The results of the interference of the SVINT with the cold caloric test on the intact ear suggest that different vestibular sensory cells are involved in these two tests. The stimulus location optimization suggests that vibrations directly stimulate the inner ear on the intact side. Objectives. The aim of this study was to establish the effectiveness of a rapid, non-invasive test used to detect vestibular asymmetry at 30, 60 and 100 Hz stimulation in tUVL. Patients and methods. The high frequency vibration test applied to the skull using the SVINT was compared to the results of HST and caloric test in 134 patients and 95 normal subjects: 131 patients had a total unilateral vestibular dysfunction and 3 had a bilateral total lesion (tBVL). The effects of stimulus frequency, topography and head position were studied using a video-nystagmograph. Results. In tUVL, the SVINT always revealed a lesional nystagmus beating toward the healthy side at all frequencies. The mastoid site was more efficient than the cervical and vertex sites (p<0.005). The mean skull vibratory nystagmus (SVN) slow phase velocity (SPV) is 10.7°/s (SD =7.5; n=20). Mastoid stimulation efficiency was not correlated with the side of stimulation. SVN SPV was correlated with the total caloric efficiency on the healthy ear (p=0.03). The interference of the SVINT during the cold caloric test on the intact ear demonstrated a reversal of the caloric nystagmus at each application of the vibrator. In tBVL, SVINT revealed no nystagmus. [ABSTRACT FROM AUTHOR]
Copyright of Acta Oto-Laryngologica is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
  Group: Ti
  Data: Nystagmus induced by high frequency vibrations of the skull in total unilateral peripheral vestibular lesions.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Dumas%2C+Georges%22&quot;&gt;Dumas, Georges&lt;/searchLink&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Perrin%2C+Philippe%22&quot;&gt;Perrin, Philippe&lt;/searchLink&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Schmerber%2C+S&#233;bastien%22&quot;&gt;Schmerber, S&#233;bastien&lt;/searchLink&gt; (AUTHOR)
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Acta+Oto-Laryngologica%22&quot;&gt;Acta Oto-Laryngologica&lt;/searchLink&gt;. Mar2008, Vol. 128 Issue 3, p255-262. 8p. 1 Black and White Photograph, 2 Charts, 3 Graphs.
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  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Nystagmus%22&quot;&gt;Nystagmus&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Vestibular+apparatus+diseases%22&quot;&gt;Vestibular apparatus diseases&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Physiological+effects+of+vibration%22&quot;&gt;Physiological effects of vibration&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Noninvasive+diagnostic+tests%22&quot;&gt;Noninvasive diagnostic tests&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Skull%22&quot;&gt;Skull&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Conclusion. The skull vibration-induced nystagmus test (SVINT) is a useful complementary test to the caloric test, which evaluates very low frequencies, and the head shaking test (HST), which explores medium range frequencies. These three tests are fully correlated in total unilateral vestibular lesions (tUVL) with a sensitivity of 98% and a specificity of 94% for the SVINT. The results of the interference of the SVINT with the cold caloric test on the intact ear suggest that different vestibular sensory cells are involved in these two tests. The stimulus location optimization suggests that vibrations directly stimulate the inner ear on the intact side. Objectives. The aim of this study was to establish the effectiveness of a rapid, non-invasive test used to detect vestibular asymmetry at 30, 60 and 100 Hz stimulation in tUVL. Patients and methods. The high frequency vibration test applied to the skull using the SVINT was compared to the results of HST and caloric test in 134 patients and 95 normal subjects: 131 patients had a total unilateral vestibular dysfunction and 3 had a bilateral total lesion (tBVL). The effects of stimulus frequency, topography and head position were studied using a video-nystagmograph. Results. In tUVL, the SVINT always revealed a lesional nystagmus beating toward the healthy side at all frequencies. The mastoid site was more efficient than the cervical and vertex sites (p&lt;0.005). The mean skull vibratory nystagmus (SVN) slow phase velocity (SPV) is 10.7&#176;/s (SD =7.5; n=20). Mastoid stimulation efficiency was not correlated with the side of stimulation. SVN SPV was correlated with the total caloric efficiency on the healthy ear (p=0.03). The interference of the SVINT during the cold caloric test on the intact ear demonstrated a reversal of the caloric nystagmus at each application of the vibrator. In tBVL, SVINT revealed no nystagmus. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: &lt;i&gt;Copyright of Acta Oto-Laryngologica is the property of Taylor &amp; Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1080/00016480701477677
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 8
        StartPage: 255
    Subjects:
      – SubjectFull: Nystagmus
        Type: general
      – SubjectFull: Vestibular apparatus diseases
        Type: general
      – SubjectFull: Physiological effects of vibration
        Type: general
      – SubjectFull: Noninvasive diagnostic tests
        Type: general
      – SubjectFull: Skull
        Type: general
    Titles:
      – TitleFull: Nystagmus induced by high frequency vibrations of the skull in total unilateral peripheral vestibular lesions.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Dumas, Georges
      – PersonEntity:
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            NameFull: Perrin, Philippe
      – PersonEntity:
          Name:
            NameFull: Schmerber, Sébastien
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          Dates:
            – D: 01
              M: 03
              Text: Mar2008
              Type: published
              Y: 2008
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              Value: 00016489
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              Value: 128
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            – TitleFull: Acta Oto-Laryngologica
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