Dissociation of visual and haptic vertical in two patients with vestibular nuclear lesions
Identifieur interne : 007026 ( Main/Curation ); précédent : 007025; suivant : 007027Dissociation of visual and haptic vertical in two patients with vestibular nuclear lesions
Auteurs : A. M. Bronstein [Royaume-Uni] ; D. A. Perennou [Royaume-Uni] ; M. Guerraz [Royaume-Uni] ; D. Playford [Royaume-Uni] ; P. Rudge [Royaume-Uni]Source :
- Neurology [ 0028-3878 ] ; 2003.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Homme.
English descriptors
- KwdEn :
Abstract
The somatosensory (haptic) vertical (HV) and visual vertical (VV) were assessed in two patients with vestibular nuclear lesions. Patient 1 had paroxysmal nystagmus, and was tested "on" and "off." The HV was normal "on" and "off" but the VV was severely tilted during vestibular paroxysms. Patient 2, with a brainstem stroke, was tested at months 1 and 6. The VV was severely tilted on both occasions (>12°) but the HV was marginally tilted (4°) in the acute stage only. These VV-HV dissociations suggest that vestibular nuclear lesions influence gravity perception mostly via ocular torsional effects rather than by disrupting a single, internal representation of verticality.
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<s3>GBR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Londres</settlement>
<region type="country">Angleterre</region>
<region type="région" nuts="1">Grand Londres</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Playford, D" sort="Playford, D" uniqKey="Playford D" first="D." last="Playford">D. Playford</name>
<affiliation wicri:level="3"><inist:fA14 i1="02"><s1>National Hospital for Neurology and Neurosurgery</s1>
<s2>Queen Square, London</s2>
<s3>GBR</s3>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Londres</settlement>
<region type="country">Angleterre</region>
<region type="région" nuts="1">Grand Londres</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Rudge, P" sort="Rudge, P" uniqKey="Rudge P" first="P." last="Rudge">P. Rudge</name>
<affiliation wicri:level="3"><inist:fA14 i1="02"><s1>National Hospital for Neurology and Neurosurgery</s1>
<s2>Queen Square, London</s2>
<s3>GBR</s3>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Royaume-Uni</country>
<placeName><settlement type="city">Londres</settlement>
<region type="country">Angleterre</region>
<region type="région" nuts="1">Grand Londres</region>
</placeName>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">Neurology</title>
<title level="j" type="abbreviated">Neurology</title>
<idno type="ISSN">0028-3878</idno>
<imprint><date when="2003">2003</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">Neurology</title>
<title level="j" type="abbreviated">Neurology</title>
<idno type="ISSN">0028-3878</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Case study</term>
<term>Focal lesion</term>
<term>Human</term>
<term>Nystagmus</term>
<term>Pathophysiology</term>
<term>Perception</term>
<term>Verticality</term>
<term>Vestibule</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Lésion focale</term>
<term>Vestibule</term>
<term>Perception</term>
<term>Verticalité</term>
<term>Nystagmus</term>
<term>Etude cas</term>
<term>Physiopathologie</term>
<term>Homme</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Homme</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">The somatosensory (haptic) vertical (HV) and visual vertical (VV) were assessed in two patients with vestibular nuclear lesions. Patient 1 had paroxysmal nystagmus, and was tested "on" and "off." The HV was normal "on" and "off" but the VV was severely tilted during vestibular paroxysms. Patient 2, with a brainstem stroke, was tested at months 1 and 6. The VV was severely tilted on both occasions (>12°) but the HV was marginally tilted (4°) in the acute stage only. These VV-HV dissociations suggest that vestibular nuclear lesions influence gravity perception mostly via ocular torsional effects rather than by disrupting a single, internal representation of verticality.</div>
</front>
</TEI>
</INIST>
</double>
</record>
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