Violation of the Craniocentricity Principle for Vestibularly Evoked Balance Responses under Conditions of Anisotropic Stability
Identifieur interne : 000C89 ( Main/Exploration ); précédent : 000C88; suivant : 000C90Violation of the Craniocentricity Principle for Vestibularly Evoked Balance Responses under Conditions of Anisotropic Stability
Auteurs : Omar S. Mian [Royaume-Uni] ; Brian L. Day [Royaume-Uni]Source :
- The Journal of Neuroscience [ 0270-6474 ] ; 2014.
Abstract
The balance response direction to electrically evoked vestibular perturbation is closely tied to head orientation. Such craniocentric response organization is expected of a simple error correction process. Here we ask whether this is maintained when the body is made more stable, but with the stability being greater in one direction than another. Since it is known that vestibularly evoked balance responses become smaller as body stability increases, the following two outcomes are possible: (1) response magnitude is attenuated, but with craniocentricity maintained; and (2) anisotropy of stability is considered such that components of the response are differentially attenuated, which would violate a craniocentric organizing principle. We tested these alternatives by measuring the direction of balance responses to electrical vestibular stimulation across a range of head orientations and stance widths in healthy humans. With feet together, the response was highly craniocentric. However, when stance width was increased so that the body was more stable in the frontal plane, response direction became biased toward the sagittal direction. This resulted in a nonlinear relationship between head orientation and response direction. While stance width changes the mechanical state of the body, the effect was also present when lateral light touch was used to produce anisotropy in stability, demonstrating that a significantly altered mechanical state was not crucial. We conclude that the balance system does not simply act according to the direction of vestibular input. Instead, it appears to assign greater relevance to components of vestibular input acting in the plane of lesser body stability than the plane of greater body stability, and acts accordingly.
Url:
DOI: 10.1523/JNEUROSCI.0733-14.2014
PubMed: 24872573
PubMed Central: 4035529
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Pmc, to step Corpus: 001460
- to stream Pmc, to step Curation: 001460
- to stream Pmc, to step Checkpoint: 000832
- to stream Ncbi, to step Merge: 003031
- to stream Ncbi, to step Curation: 003031
- to stream Ncbi, to step Checkpoint: 003031
- to stream Main, to step Merge: 000C88
- to stream Main, to step Curation: 000C89
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Violation of the Craniocentricity Principle for Vestibularly Evoked Balance Responses under Conditions of Anisotropic Stability</title>
<author><name sortKey="Mian, Omar S" sort="Mian, Omar S" uniqKey="Mian O" first="Omar S." last="Mian">Omar S. Mian</name>
<affiliation wicri:level="1"><nlm:aff id="aff1">Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, Queen Square, London WC1N 3BG, United Kingdom</nlm:aff>
<country xml:lang="fr">Royaume-Uni</country>
<wicri:regionArea>Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, Queen Square, London WC1N 3BG</wicri:regionArea>
<wicri:noRegion>London WC1N 3BG</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Day, Brian L" sort="Day, Brian L" uniqKey="Day B" first="Brian L." last="Day">Brian L. Day</name>
<affiliation wicri:level="1"><nlm:aff id="aff1">Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, Queen Square, London WC1N 3BG, United Kingdom</nlm:aff>
<country xml:lang="fr">Royaume-Uni</country>
<wicri:regionArea>Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, Queen Square, London WC1N 3BG</wicri:regionArea>
<wicri:noRegion>London WC1N 3BG</wicri:noRegion>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">PMC</idno>
<idno type="pmid">24872573</idno>
<idno type="pmc">4035529</idno>
<idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4035529</idno>
<idno type="RBID">PMC:4035529</idno>
<idno type="doi">10.1523/JNEUROSCI.0733-14.2014</idno>
<date when="2014">2014</date>
<idno type="wicri:Area/Pmc/Corpus">001460</idno>
<idno type="wicri:Area/Pmc/Curation">001460</idno>
<idno type="wicri:Area/Pmc/Checkpoint">000832</idno>
<idno type="wicri:Area/Ncbi/Merge">003031</idno>
<idno type="wicri:Area/Ncbi/Curation">003031</idno>
<idno type="wicri:Area/Ncbi/Checkpoint">003031</idno>
<idno type="wicri:doubleKey">0270-6474:2014:Mian O:violation:of:the</idno>
<idno type="wicri:Area/Main/Merge">000C88</idno>
<idno type="wicri:Area/Main/Curation">000C89</idno>
<idno type="wicri:Area/Main/Exploration">000C89</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Violation of the Craniocentricity Principle for Vestibularly Evoked Balance Responses under Conditions of Anisotropic Stability</title>
<author><name sortKey="Mian, Omar S" sort="Mian, Omar S" uniqKey="Mian O" first="Omar S." last="Mian">Omar S. Mian</name>
<affiliation wicri:level="1"><nlm:aff id="aff1">Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, Queen Square, London WC1N 3BG, United Kingdom</nlm:aff>
<country xml:lang="fr">Royaume-Uni</country>
<wicri:regionArea>Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, Queen Square, London WC1N 3BG</wicri:regionArea>
<wicri:noRegion>London WC1N 3BG</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Day, Brian L" sort="Day, Brian L" uniqKey="Day B" first="Brian L." last="Day">Brian L. Day</name>
<affiliation wicri:level="1"><nlm:aff id="aff1">Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, Queen Square, London WC1N 3BG, United Kingdom</nlm:aff>
<country xml:lang="fr">Royaume-Uni</country>
<wicri:regionArea>Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, Queen Square, London WC1N 3BG</wicri:regionArea>
<wicri:noRegion>London WC1N 3BG</wicri:noRegion>
</affiliation>
</author>
</analytic>
<series><title level="j">The Journal of Neuroscience</title>
<idno type="ISSN">0270-6474</idno>
<idno type="eISSN">1529-2401</idno>
<imprint><date when="2014">2014</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass></textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en"><p>The balance response direction to electrically evoked vestibular perturbation is closely tied to head orientation. Such craniocentric response organization is expected of a simple error correction process. Here we ask whether this is maintained when the body is made more stable, but with the stability being greater in one direction than another. Since it is known that vestibularly evoked balance responses become smaller as body stability increases, the following two outcomes are possible: (1) response magnitude is attenuated, but with craniocentricity maintained; and (2) anisotropy of stability is considered such that components of the response are differentially attenuated, which would violate a craniocentric organizing principle. We tested these alternatives by measuring the direction of balance responses to electrical vestibular stimulation across a range of head orientations and stance widths in healthy humans. With feet together, the response was highly craniocentric. However, when stance width was increased so that the body was more stable in the frontal plane, response direction became biased toward the sagittal direction. This resulted in a nonlinear relationship between head orientation and response direction. While stance width changes the mechanical state of the body, the effect was also present when lateral light touch was used to produce anisotropy in stability, demonstrating that a significantly altered mechanical state was not crucial. We conclude that the balance system does not simply act according to the direction of vestibular input. Instead, it appears to assign greater relevance to components of vestibular input acting in the plane of lesser body stability than the plane of greater body stability, and acts accordingly.</p>
</div>
</front>
</TEI>
<affiliations><list><country><li>Royaume-Uni</li>
</country>
</list>
<tree><country name="Royaume-Uni"><noRegion><name sortKey="Mian, Omar S" sort="Mian, Omar S" uniqKey="Mian O" first="Omar S." last="Mian">Omar S. Mian</name>
</noRegion>
<name sortKey="Day, Brian L" sort="Day, Brian L" uniqKey="Day B" first="Brian L." last="Day">Brian L. Day</name>
</country>
</tree>
</affiliations>
</record>
Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Ticri/CIDE/explor/HapticV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000C89 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000C89 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien |wiki= Ticri/CIDE |area= HapticV1 |flux= Main |étape= Exploration |type= RBID |clé= PMC:4035529 |texte= Violation of the Craniocentricity Principle for Vestibularly Evoked Balance Responses under Conditions of Anisotropic Stability }}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Exploration/RBID.i -Sk "pubmed:24872573" \ | HfdSelect -Kh $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd \ | NlmPubMed2Wicri -a HapticV1
![]() | This area was generated with Dilib version V0.6.23. | ![]() |