Is backward disequilibrium in the elderly caused by an abnormal perception of verticality? A pilot study.
Identifieur interne : 000356 ( Hal/Curation ); précédent : 000355; suivant : 000357Is backward disequilibrium in the elderly caused by an abnormal perception of verticality? A pilot study.
Auteurs : Patrick Manckoundia ; France Mourey ; Pierre Pfitzenmeyer [France] ; Jacques Van Hoecke [France] ; Dominic Pérennou [France]Source :
- Clinical Neurophysiology [ 1388-2457 ] ; 2007-04.
Abstract
OBJECTIVE: We hypothesised that backward disequilibrium (BD), defined by a posterior position of the centre of mass with respect to the base of support, could be caused by a backward tilt in the perception of verticality. METHODS: The relationship between BD, the perception of verticality, and the history of falls in 25 subjects aged 84.5+/-7.4 years was analysed. An original ordinal scale, the BD scale (BDS), was used to quantify BD. Postural (PV) and haptic verticals (HV) were measured in sagittal plane. RESULTS: BDS scores closely correlated with the number of falls (r = 0.81, p =10(-5)). The more the PV was tilted backward, the greater the BDS scores (r = -0.95, p<10(-6)), with a huge backward tilt of about 15 degrees in 4 subjects with severe BD. In these subjects, the tilt in perception of verticality was transmodal since a severe backward HV tilt was also found. CONCLUSIONS: This transmodality suggested high-order cognitive disruption in the construction of the subjective vertical used in postural control by subjects showing BD, which confirmed our hypothesis. SIGNIFICANCE: This study clearly shows that perception and action with respect to gravity are closely related and brings a new insight about fall mechanisms in the elderly.
Url:
DOI: 10.1016/j.clinph.2006.11.274
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Grenoble 1</orgName><orgName type="acronym">UJF</orgName><date type="end">2015-12-31</date><desc><address><addrLine>BP 53 - 38041 Grenoble Cedex 9</addrLine><country key="FR"></country></address><ref type="url">http://www.ujf-grenoble.fr/</ref></desc></org></tutelle><tutelle active="#struct-300071" type="direct"><org type="institution" xml:id="struct-300071" status="VALID"><orgName>CHU Grenoble</orgName><desc><address><country key="FR"></country></address></desc></org></tutelle></tutelles></hal:affiliation><country>France</country><placeName><settlement type="city">Grenoble</settlement><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region></placeName><orgName type="university">Université Joseph Fourier</orgName><orgName type="institution" wicri:auto="newGroup">Université de Grenoble</orgName></affiliation></author></analytic><idno type="DOI">10.1016/j.clinph.2006.11.274</idno><series><title level="j">Clinical Neurophysiology</title><idno type="ISSN">1388-2457</idno><imprint><date type="datePub">2007-04</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">OBJECTIVE: We hypothesised that backward disequilibrium (BD), defined by a posterior position of the centre of mass with respect to the base of support, could be caused by a backward tilt in the perception of verticality. METHODS: The relationship between BD, the perception of verticality, and the history of falls in 25 subjects aged 84.5+/-7.4 years was analysed. An original ordinal scale, the BD scale (BDS), was used to quantify BD. Postural (PV) and haptic verticals (HV) were measured in sagittal plane. RESULTS: BDS scores closely correlated with the number of falls (r = 0.81, p =10(-5)). The more the PV was tilted backward, the greater the BDS scores (r = -0.95, p<10(-6)), with a huge backward tilt of about 15 degrees in 4 subjects with severe BD. In these subjects, the tilt in perception of verticality was transmodal since a severe backward HV tilt was also found. CONCLUSIONS: This transmodality suggested high-order cognitive disruption in the construction of the subjective vertical used in postural control by subjects showing BD, which confirmed our hypothesis. SIGNIFICANCE: This study clearly shows that perception and action with respect to gravity are closely related and brings a new insight about fall mechanisms in the elderly.</div></front></TEI><hal api="V3"><titleStmt><title xml:lang="en">Is backward disequilibrium in the elderly caused by an abnormal perception of verticality? A pilot study.</title><author role="aut"><persName><forename type="first">Patrick</forename><surname>Manckoundia</surname></persName><email></email><idno type="halauthor">792374</idno></author><author role="aut"><persName><forename type="first">France</forename><surname>Mourey</surname></persName><email></email><idno type="halauthor">291001</idno></author><author role="aut"><persName><forename type="first">Pierre</forename><surname>Pfitzenmeyer</surname></persName><email></email><idno type="halauthor">289632</idno><affiliation ref="#struct-420794"></affiliation></author><author role="aut"><persName><forename type="first">Jacques</forename><surname>Van Hoecke</surname></persName><email></email><idno type="halauthor">107442</idno><affiliation ref="#struct-193141"></affiliation></author><author role="crp"><persName><forename type="first">Dominic</forename><surname>Pérennou</surname></persName><email>DPerennou@chu-grenoble.fr</email><idno type="halauthor">805357</idno><affiliation ref="#struct-93013"></affiliation></author><editor role="depositor"><persName><forename>Estelle</forename><surname>Palluel</surname></persName><email>estelle.palluel@ujf-grenoble.fr</email></editor></titleStmt><editionStmt><edition n="v1" type="current"><date type="whenSubmitted">2013-01-14 18:00:23</date><date type="whenModified">2014-02-05 21:41:07</date><date type="whenReleased">2013-01-14 18:00:23</date><date type="whenProduced">2007-04</date></edition><respStmt><resp>contributor</resp><name key="181362"><persName><forename>Estelle</forename><surname>Palluel</surname></persName><email>estelle.palluel@ujf-grenoble.fr</email></name></respStmt></editionStmt><publicationStmt><distributor>CCSD</distributor><idno type="halId">hal-00775982</idno><idno type="halUri">https://hal.archives-ouvertes.fr/hal-00775982</idno><idno type="halBibtex">manckoundia:hal-00775982</idno><idno type="halRefHtml">Clinical Neurophysiology, Elsevier, 2007, 118 (4), pp.786-93. <10.1016/j.clinph.2006.11.274></idno><idno type="halRef">Clinical Neurophysiology, Elsevier, 2007, 118 (4), pp.786-93. <10.1016/j.clinph.2006.11.274></idno></publicationStmt><seriesStmt><idno type="stamp" n="UNIV-BOURGOGNE">Université de Bourgogne</idno><idno type="stamp" n="UNIV-GRENOBLE1" p="UGA">Université Joseph Fourier - Grenoble I</idno><idno type="stamp" n="UGA">HAL Grenoble Alpes</idno></seriesStmt><notesStmt><note type="audience" n="2">International</note><note type="popular" n="0">No</note><note type="peer" n="1">Yes</note></notesStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Is backward disequilibrium in the elderly caused by an abnormal perception of verticality? A pilot study.</title><author role="aut"><persName><forename type="first">Patrick</forename><surname>Manckoundia</surname></persName><idno type="halAuthorId">792374</idno></author><author role="aut"><persName><forename type="first">France</forename><surname>Mourey</surname></persName><idno type="halAuthorId">291001</idno></author><author role="aut"><persName><forename type="first">Pierre</forename><surname>Pfitzenmeyer</surname></persName><idno type="halAuthorId">289632</idno><affiliation ref="#struct-420794"></affiliation></author><author role="aut"><persName><forename type="first">Jacques</forename><surname>Van Hoecke</surname></persName><idno type="halAuthorId">107442</idno><affiliation ref="#struct-193141"></affiliation></author><author role="crp"><persName><forename type="first">Dominic</forename><surname>Pérennou</surname></persName><email>DPerennou@chu-grenoble.fr</email><idno type="halAuthorId">805357</idno><affiliation ref="#struct-93013"></affiliation></author></analytic><monogr><idno type="halJournalId" status="VALID">11801</idno><idno type="issn">1388-2457</idno><title level="j">Clinical Neurophysiology</title><imprint><publisher>Elsevier</publisher><biblScope unit="volume">118</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="pp">786-93</biblScope><date type="datePub">2007-04</date><date type="dateEpub">2007-02-20</date></imprint></monogr><idno type="doi">10.1016/j.clinph.2006.11.274</idno><idno type="pubmed">17314062</idno></biblStruct></sourceDesc><profileDesc><langUsage><language ident="en">English</language></langUsage><textClass><classCode scheme="mesh">Accidental Falls</classCode><classCode scheme="mesh">Aged, 80 and over</classCode><classCode scheme="mesh">Visual Perception</classCode><classCode scheme="mesh">Geriatric Assessment</classCode><classCode scheme="mesh">Humans</classCode><classCode scheme="mesh">Pilot Projects</classCode><classCode scheme="mesh">Postural Balance</classCode><classCode scheme="mesh">Posture</classCode><classCode scheme="mesh">Severity of Illness Index</classCode><classCode scheme="mesh">Vestibular Diseases</classCode><classCode scheme="mesh">Vestibular Function Tests</classCode><classCode scheme="halDomain" n="sdv.neu.sc">Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Cognitive Sciences</classCode><classCode scheme="halTypology" n="ART">Journal articles</classCode></textClass><abstract xml:lang="en">OBJECTIVE: We hypothesised that backward disequilibrium (BD), defined by a posterior position of the centre of mass with respect to the base of support, could be caused by a backward tilt in the perception of verticality. METHODS: The relationship between BD, the perception of verticality, and the history of falls in 25 subjects aged 84.5+/-7.4 years was analysed. An original ordinal scale, the BD scale (BDS), was used to quantify BD. Postural (PV) and haptic verticals (HV) were measured in sagittal plane. RESULTS: BDS scores closely correlated with the number of falls (r = 0.81, p =10(-5)). The more the PV was tilted backward, the greater the BDS scores (r = -0.95, p<10(-6)), with a huge backward tilt of about 15 degrees in 4 subjects with severe BD. In these subjects, the tilt in perception of verticality was transmodal since a severe backward HV tilt was also found. CONCLUSIONS: This transmodality suggested high-order cognitive disruption in the construction of the subjective vertical used in postural control by subjects showing BD, which confirmed our hypothesis. SIGNIFICANCE: This study clearly shows that perception and action with respect to gravity are closely related and brings a new insight about fall mechanisms in the elderly.</abstract></profileDesc></hal></record>Pour manipuler ce document sous Unix (Dilib)
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