A New Model for Utricular Function Testing Using a Sinusoidal Translation Profile during Unilateral Centrifugation
Identifieur interne : 000801 ( Main/Exploration ); précédent : 000800; suivant : 000802A New Model for Utricular Function Testing Using a Sinusoidal Translation Profile during Unilateral Centrifugation
Auteurs : K. I. Buytaert [Belgique] ; S. A. E. Nooij [Pays-Bas] ; X. Neyt [Belgique] ; P.-F. Migeotte [Belgique] ; R. Vanspauwen [Belgique] ; P. H. Van De Heyning [Belgique] ; F. L. Wuyts [Belgique]Source :
- Audiology & neuro-otology [ 1420-3030 ] ; 2010.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
The utricle plays an important role in orientation with respect to gravity. The unilateral centrifugation test allows a side-by-side investigation of both utricles. During this test, the subject is rotated about an earth-vertical axis at high rotation speeds (e.g. 400°/s) and translated along an interaural axis to consecutively align the axis of rotation with the left and the right utricle. A simple sinusoidal translation profile (0.013 Hz; amplitude = 4 cm) was chosen. The combined rotation and translation induces ocular counter rolling (OCR), which is measured using 3-D video-oculography. This OCR is the sum of the reflexes generated by both the semicircular canals and the utricles. In this paper, we present a new physiological model that decomposes this total OCR into a canal and a utricular contribution, modelled by a second-order transfer function and a combination of 2 sine functions, respectively. This model yields parameters such as canal gain, cupular and adaptation time constants and a velocity storage component for the canals. Utricular gain, bias, phase and the asymmetry between the left and the right utricle are characteristic parameters generated by the model for the utricles. The model is presented along with the results of 10 healthy subjects and 2 patients with a unilateral vestibular loss due to acoustic neuroma surgery to illustrate the effectiveness of the model.
Affiliations:
- Belgique, Pays-Bas
- Province d'Anvers, Région de Bruxelles-Capitale
- Anvers, Bruxelles
- Université d'Anvers
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I." last="Buytaert">K. I. Buytaert</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Antwerp University Research centre for Equilibrium and Aerospace (AUREA), ENT Department, Antwerp University Hospital, University of Antwerp</s1><s3>BEL</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Belgique</country><placeName><settlement type="city">Anvers</settlement><region type="district" nuts="2">Province d'Anvers</region></placeName><orgName type="university">Université d'Anvers</orgName></affiliation><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratory of Biomedical Physics (BIMEF), University of Antwerp</s1><s2>Antwerp</s2><s3>BEL</s3><sZ>1 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Belgique</country><placeName><settlement type="city">Anvers</settlement><region type="district" nuts="2">Province d'Anvers</region></placeName><orgName type="university">Université d'Anvers</orgName></affiliation></author><author><name sortKey="Nooij, S A E" sort="Nooij, S A E" uniqKey="Nooij S" first="S. 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Migeotte</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Signal and Image Centre, Electrical Engineering Department, Royal Military Academy</s1><s2>Brussels</s2><s3>BEL</s3><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Belgique</country><placeName><settlement type="city">Bruxelles</settlement><region nuts="2">Région de Bruxelles-Capitale</region></placeName></affiliation></author><author><name sortKey="Vanspauwen, R" sort="Vanspauwen, R" uniqKey="Vanspauwen R" first="R." last="Vanspauwen">R. Vanspauwen</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Antwerp University Research centre for Equilibrium and Aerospace (AUREA), ENT Department, Antwerp University Hospital, University of Antwerp</s1><s3>BEL</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Belgique</country><placeName><settlement type="city">Anvers</settlement><region type="district" nuts="2">Province d'Anvers</region></placeName><orgName type="university">Université d'Anvers</orgName></affiliation></author><author><name sortKey="Van De Heyning, P H" sort="Van De Heyning, P H" uniqKey="Van De Heyning P" first="P. H." last="Van De Heyning">P. H. Van De Heyning</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Antwerp University Research centre for Equilibrium and Aerospace (AUREA), ENT Department, Antwerp University Hospital, University of Antwerp</s1><s3>BEL</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Belgique</country><placeName><settlement type="city">Anvers</settlement><region type="district" nuts="2">Province d'Anvers</region></placeName><orgName type="university">Université d'Anvers</orgName></affiliation></author><author><name sortKey="Wuyts, F L" sort="Wuyts, F L" uniqKey="Wuyts F" first="F. L." last="Wuyts">F. L. Wuyts</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Antwerp University Research centre for Equilibrium and Aerospace (AUREA), ENT Department, Antwerp University Hospital, University of Antwerp</s1><s3>BEL</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Belgique</country><placeName><settlement type="city">Anvers</settlement><region type="district" nuts="2">Province d'Anvers</region></placeName><orgName type="university">Université d'Anvers</orgName></affiliation><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratory of Biomedical Physics (BIMEF), University of Antwerp</s1><s2>Antwerp</s2><s3>BEL</s3><sZ>1 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Belgique</country><placeName><settlement type="city">Anvers</settlement><region type="district" nuts="2">Province d'Anvers</region></placeName><orgName type="university">Université d'Anvers</orgName></affiliation></author></analytic><series><title level="j" type="main">Audiology & neuro-otology</title><title level="j" type="abbreviated">Audiol. neuro-otol.</title><idno type="ISSN">1420-3030</idno><imprint><date when="2010">2010</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Audiology & neuro-otology</title><title level="j" type="abbreviated">Audiol. neuro-otol.</title><idno type="ISSN">1420-3030</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>ENT</term><term>Profile</term><term>Sinusoidal</term><term>Unilateral</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Sinusoïdal</term><term>Profil</term><term>Unilatéral</term><term>ORL</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The utricle plays an important role in orientation with respect to gravity. The unilateral centrifugation test allows a side-by-side investigation of both utricles. During this test, the subject is rotated about an earth-vertical axis at high rotation speeds (e.g. 400°/s) and translated along an interaural axis to consecutively align the axis of rotation with the left and the right utricle. A simple sinusoidal translation profile (0.013 Hz; amplitude = 4 cm) was chosen. The combined rotation and translation induces ocular counter rolling (OCR), which is measured using 3-D video-oculography. This OCR is the sum of the reflexes generated by both the semicircular canals and the utricles. In this paper, we present a new physiological model that decomposes this total OCR into a canal and a utricular contribution, modelled by a second-order transfer function and a combination of 2 sine functions, respectively. This model yields parameters such as canal gain, cupular and adaptation time constants and a velocity storage component for the canals. Utricular gain, bias, phase and the asymmetry between the left and the right utricle are characteristic parameters generated by the model for the utricles. The model is presented along with the results of 10 healthy subjects and 2 patients with a unilateral vestibular loss due to acoustic neuroma surgery to illustrate the effectiveness of the model.</div></front></TEI><affiliations><list><country><li>Belgique</li><li>Pays-Bas</li></country><region><li>Province d'Anvers</li><li>Région de Bruxelles-Capitale</li></region><settlement><li>Anvers</li><li>Bruxelles</li></settlement><orgName><li>Université d'Anvers</li></orgName></list><tree><country name="Belgique"><region name="Province d'Anvers"><name sortKey="Buytaert, K I" sort="Buytaert, K I" uniqKey="Buytaert K" first="K. I." last="Buytaert">K. I. Buytaert</name></region><name sortKey="Buytaert, K I" sort="Buytaert, K I" uniqKey="Buytaert K" first="K. I." last="Buytaert">K. I. Buytaert</name><name sortKey="Migeotte, P F" sort="Migeotte, P F" uniqKey="Migeotte P" first="P.-F." last="Migeotte">P.-F. Migeotte</name><name sortKey="Neyt, X" sort="Neyt, X" uniqKey="Neyt X" first="X." last="Neyt">X. Neyt</name><name sortKey="Van De Heyning, P H" sort="Van De Heyning, P H" uniqKey="Van De Heyning P" first="P. H." last="Van De Heyning">P. H. Van De Heyning</name><name sortKey="Vanspauwen, R" sort="Vanspauwen, R" uniqKey="Vanspauwen R" first="R." last="Vanspauwen">R. Vanspauwen</name><name sortKey="Wuyts, F L" sort="Wuyts, F L" uniqKey="Wuyts F" first="F. L." last="Wuyts">F. L. Wuyts</name><name sortKey="Wuyts, F L" sort="Wuyts, F L" uniqKey="Wuyts F" first="F. L." last="Wuyts">F. L. Wuyts</name></country><country name="Pays-Bas"><noRegion><name sortKey="Nooij, S A E" sort="Nooij, S A E" uniqKey="Nooij S" first="S. A. E." last="Nooij">S. A. E. Nooij</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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