Subthalamic nucleus influences spatial orientation in extrapersonal space
Identifieur interne : 002015 ( Istex/Corpus ); précédent : 002014; suivant : 002016Subthalamic nucleus influences spatial orientation in extrapersonal space
Auteurs : Karsten Witt ; Florian Kopper ; Günther Deuschl ; Paul KrackSource :
- Movement Disorders [ 0885-3185 ] ; 2006-03.
English descriptors
Abstract
While the role of frontal and parietal cortex in spatial orientation has been studied extensively, the contribution of the basal ganglia and especially the subthalamic nucleus to spatial orientation remains less clear. Here we use subthalamic nucleus (STN) deep brain stimulation (DBS) in Parkinson's disease (PD) as a reversible model of functional lesioning to evaluate the influence of the STN in extrapersonal space orientation. To this end, 12 PD patients were examined 1 year after implantation of DBS electrodes in the STN after overnight withdrawal of L‐dopa. Patients were tested in a pseudorandomized order while both stimulators, the right only, the left only, or no stimulator, were switched on. Patients performed line bisection and a reaction time task responding to stimuli of the middle, the left, and the right extrapersonal space. A separate assessment of the right and left hand responding to visual stimuli in each hemispace made it possible to distinguish hemispatial and hemimotor impairments. No asymmetries in space orientation were found when both stimulators were switched OFF, when both stimulators were switched ON, and when only the right stimulator was switched ON. When only the left subthalamic stimulation was switched ON, the reaction times of both hands to visual stimuli in the left extrapersonal hemispace increased significantly and the line bisection test showed a significant orientation to the right. These results lead to the conclusion that the STN and its cortical projections influence the network involved in visuospatial orientation. These patterns of symptoms of neglect demonstrate the influence of the STN on the attentional system of the nondominant hemisphere. © 2005 Movement Disorder Society
Url:
DOI: 10.1002/mds.20728
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ISTEX:2DD632BE40AA6A082F4CA17E355BAD73CE73E2C5Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Subthalamic nucleus influences spatial orientation in extrapersonal space</title><author><name sortKey="Witt, Karsten" sort="Witt, Karsten" uniqKey="Witt K" first="Karsten" last="Witt">Karsten Witt</name><affiliation><mods:affiliation>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</mods:affiliation></affiliation></author><author><name sortKey="Kopper, Florian" sort="Kopper, Florian" uniqKey="Kopper F" first="Florian" last="Kopper">Florian Kopper</name><affiliation><mods:affiliation>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</mods:affiliation></affiliation></author><author><name sortKey="Deuschl, Gunther" sort="Deuschl, Gunther" uniqKey="Deuschl G" first="Günther" last="Deuschl">Günther Deuschl</name><affiliation><mods:affiliation>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</mods:affiliation></affiliation><affiliation><mods:affiliation>Department of Neurology, University Schleswig‐Holstein, Campus Kiel, Schittenhelmstrasse 10, D‐24105 Kiel, Germany</mods:affiliation></affiliation></author><author><name sortKey="Krack, Paul" sort="Krack, Paul" uniqKey="Krack P" first="Paul" last="Krack">Paul Krack</name><affiliation><mods:affiliation>Department of Clinical and Biological Neurosciences, Service de Neurologie, Centre Hospitalier Universitaire de Grenoble, Grenoble, France</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:2DD632BE40AA6A082F4CA17E355BAD73CE73E2C5</idno><date when="2006" year="2006">2006</date><idno type="doi">10.1002/mds.20728</idno><idno type="url">https://api.istex.fr/document/2DD632BE40AA6A082F4CA17E355BAD73CE73E2C5/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">002015</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">002015</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Subthalamic nucleus influences spatial orientation in extrapersonal space</title><author><name sortKey="Witt, Karsten" sort="Witt, Karsten" uniqKey="Witt K" first="Karsten" last="Witt">Karsten Witt</name><affiliation><mods:affiliation>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</mods:affiliation></affiliation></author><author><name sortKey="Kopper, Florian" sort="Kopper, Florian" uniqKey="Kopper F" first="Florian" last="Kopper">Florian Kopper</name><affiliation><mods:affiliation>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</mods:affiliation></affiliation></author><author><name sortKey="Deuschl, Gunther" sort="Deuschl, Gunther" uniqKey="Deuschl G" first="Günther" last="Deuschl">Günther Deuschl</name><affiliation><mods:affiliation>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</mods:affiliation></affiliation><affiliation><mods:affiliation>Department of Neurology, University Schleswig‐Holstein, Campus Kiel, Schittenhelmstrasse 10, D‐24105 Kiel, Germany</mods:affiliation></affiliation></author><author><name sortKey="Krack, Paul" sort="Krack, Paul" uniqKey="Krack P" first="Paul" last="Krack">Paul Krack</name><affiliation><mods:affiliation>Department of Clinical and Biological Neurosciences, Service de Neurologie, Centre Hospitalier Universitaire de Grenoble, Grenoble, France</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Movement Disorders</title><title level="j" type="abbrev">Mov. Disord.</title><idno type="ISSN">0885-3185</idno><idno type="eISSN">1531-8257</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2006-03">2006-03</date><biblScope unit="volume">21</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="354">354</biblScope><biblScope unit="page" to="361">361</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">2DD632BE40AA6A082F4CA17E355BAD73CE73E2C5</idno><idno type="DOI">10.1002/mds.20728</idno><idno type="ArticleID">MDS20728</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>deep brain stimulation</term><term>neglect</term><term>spatial orientation</term><term>subthalamic nucleus</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">While the role of frontal and parietal cortex in spatial orientation has been studied extensively, the contribution of the basal ganglia and especially the subthalamic nucleus to spatial orientation remains less clear. Here we use subthalamic nucleus (STN) deep brain stimulation (DBS) in Parkinson's disease (PD) as a reversible model of functional lesioning to evaluate the influence of the STN in extrapersonal space orientation. To this end, 12 PD patients were examined 1 year after implantation of DBS electrodes in the STN after overnight withdrawal of L‐dopa. Patients were tested in a pseudorandomized order while both stimulators, the right only, the left only, or no stimulator, were switched on. Patients performed line bisection and a reaction time task responding to stimuli of the middle, the left, and the right extrapersonal space. A separate assessment of the right and left hand responding to visual stimuli in each hemispace made it possible to distinguish hemispatial and hemimotor impairments. No asymmetries in space orientation were found when both stimulators were switched OFF, when both stimulators were switched ON, and when only the right stimulator was switched ON. When only the left subthalamic stimulation was switched ON, the reaction times of both hands to visual stimuli in the left extrapersonal hemispace increased significantly and the line bisection test showed a significant orientation to the right. These results lead to the conclusion that the STN and its cortical projections influence the network involved in visuospatial orientation. These patterns of symptoms of neglect demonstrate the influence of the STN on the attentional system of the nondominant hemisphere. © 2005 Movement Disorder Society</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Karsten Witt MD</name><affiliations><json:string>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</json:string></affiliations></json:item><json:item><name>Florian Kopper MD</name><affiliations><json:string>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</json:string></affiliations></json:item><json:item><name>Günther Deuschl MD</name><affiliations><json:string>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</json:string><json:string>Department of Neurology, University Schleswig‐Holstein, Campus Kiel, Schittenhelmstrasse 10, D‐24105 Kiel, Germany</json:string></affiliations></json:item><json:item><name>Paul Krack MD</name><affiliations><json:string>Department of Clinical and Biological Neurosciences, Service de Neurologie, Centre Hospitalier Universitaire de Grenoble, Grenoble, France</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>subthalamic nucleus</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>deep brain stimulation</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>spatial orientation</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>neglect</value></json:item></subject><articleId><json:string>MDS20728</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>While the role of frontal and parietal cortex in spatial orientation has been studied extensively, the contribution of the basal ganglia and especially the subthalamic nucleus to spatial orientation remains less clear. Here we use subthalamic nucleus (STN) deep brain stimulation (DBS) in Parkinson's disease (PD) as a reversible model of functional lesioning to evaluate the influence of the STN in extrapersonal space orientation. To this end, 12 PD patients were examined 1 year after implantation of DBS electrodes in the STN after overnight withdrawal of L‐dopa. Patients were tested in a pseudorandomized order while both stimulators, the right only, the left only, or no stimulator, were switched on. Patients performed line bisection and a reaction time task responding to stimuli of the middle, the left, and the right extrapersonal space. A separate assessment of the right and left hand responding to visual stimuli in each hemispace made it possible to distinguish hemispatial and hemimotor impairments. No asymmetries in space orientation were found when both stimulators were switched OFF, when both stimulators were switched ON, and when only the right stimulator was switched ON. When only the left subthalamic stimulation was switched ON, the reaction times of both hands to visual stimuli in the left extrapersonal hemispace increased significantly and the line bisection test showed a significant orientation to the right. These results lead to the conclusion that the STN and its cortical projections influence the network involved in visuospatial orientation. These patterns of symptoms of neglect demonstrate the influence of the STN on the attentional system of the nondominant hemisphere. © 2005 Movement Disorder Society</abstract><qualityIndicators><score>8</score><pdfVersion>1.3</pdfVersion><pdfPageSize>594 x 792 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractCharCount>1745</abstractCharCount><pdfWordCount>5082</pdfWordCount><pdfCharCount>32316</pdfCharCount><pdfPageCount>8</pdfPageCount><abstractWordCount>266</abstractWordCount></qualityIndicators><title>Subthalamic nucleus influences spatial orientation in extrapersonal space</title><refBibs><json:item><author><json:item><name>KM Heilman</name></json:item><json:item><name>D Bowers</name></json:item><json:item><name>RT Watson</name></json:item></author><host><volume>33</volume><pages><last>664</last><first>661</first></pages><author></author><title>Neurology</title></host><title>Performance on hemispatial pointing task by patients with neglect 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sciences</json:string><json:string>clinical medicine</json:string><json:string>neurology & neurosurgery</json:string></scienceMetrix></categories><publicationDate>2006</publicationDate><copyrightDate>2006</copyrightDate><doi><json:string>10.1002/mds.20728</json:string></doi><id>2DD632BE40AA6A082F4CA17E355BAD73CE73E2C5</id><score>0.1284209</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/2DD632BE40AA6A082F4CA17E355BAD73CE73E2C5/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/2DD632BE40AA6A082F4CA17E355BAD73CE73E2C5/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/2DD632BE40AA6A082F4CA17E355BAD73CE73E2C5/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">Subthalamic nucleus influences spatial orientation in extrapersonal space</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><availability><p>Copyright © 2005 Movement Disorder Society</p></availability><date>2006</date></publicationStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">Subthalamic nucleus influences spatial orientation in extrapersonal space</title><author xml:id="author-1"><persName><forename type="first">Karsten</forename><surname>Witt</surname></persName><roleName type="degree">MD</roleName><affiliation>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</affiliation></author><author xml:id="author-2"><persName><forename type="first">Florian</forename><surname>Kopper</surname></persName><roleName type="degree">MD</roleName><affiliation>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</affiliation></author><author xml:id="author-3"><persName><forename type="first">Günther</forename><surname>Deuschl</surname></persName><roleName type="degree">MD</roleName><affiliation>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</affiliation><affiliation>Department of Neurology, University Schleswig‐Holstein, Campus Kiel, Schittenhelmstrasse 10, D‐24105 Kiel, Germany</affiliation></author><author xml:id="author-4"><persName><forename type="first">Paul</forename><surname>Krack</surname></persName><roleName type="degree">MD</roleName><affiliation>Department of Clinical and Biological Neurosciences, Service de Neurologie, Centre Hospitalier Universitaire de Grenoble, Grenoble, France</affiliation></author></analytic><monogr><title level="j">Movement Disorders</title><title level="j" type="abbrev">Mov. Disord.</title><idno type="pISSN">0885-3185</idno><idno type="eISSN">1531-8257</idno><idno type="DOI">10.1002/(ISSN)1531-8257</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2006-03"></date><biblScope unit="volume">21</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="354">354</biblScope><biblScope unit="page" to="361">361</biblScope></imprint></monogr><idno type="istex">2DD632BE40AA6A082F4CA17E355BAD73CE73E2C5</idno><idno type="DOI">10.1002/mds.20728</idno><idno type="ArticleID">MDS20728</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2006</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>While the role of frontal and parietal cortex in spatial orientation has been studied extensively, the contribution of the basal ganglia and especially the subthalamic nucleus to spatial orientation remains less clear. Here we use subthalamic nucleus (STN) deep brain stimulation (DBS) in Parkinson's disease (PD) as a reversible model of functional lesioning to evaluate the influence of the STN in extrapersonal space orientation. To this end, 12 PD patients were examined 1 year after implantation of DBS electrodes in the STN after overnight withdrawal of L‐dopa. Patients were tested in a pseudorandomized order while both stimulators, the right only, the left only, or no stimulator, were switched on. Patients performed line bisection and a reaction time task responding to stimuli of the middle, the left, and the right extrapersonal space. A separate assessment of the right and left hand responding to visual stimuli in each hemispace made it possible to distinguish hemispatial and hemimotor impairments. No asymmetries in space orientation were found when both stimulators were switched OFF, when both stimulators were switched ON, and when only the right stimulator was switched ON. When only the left subthalamic stimulation was switched ON, the reaction times of both hands to visual stimuli in the left extrapersonal hemispace increased significantly and the line bisection test showed a significant orientation to the right. These results lead to the conclusion that the STN and its cortical projections influence the network involved in visuospatial orientation. These patterns of symptoms of neglect demonstrate the influence of the STN on the attentional system of the nondominant hemisphere. © 2005 Movement Disorder Society</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>keywords</head><item><term>subthalamic nucleus</term></item><item><term>deep brain stimulation</term></item><item><term>spatial orientation</term></item><item><term>neglect</term></item></list></keywords></textClass><textClass><keywords scheme="Journal Subject"><list><head>article-category</head><item><term>Research Article</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2005-01-30">Received</change><change when="2005-07-11">Registration</change><change when="2006-03">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/2DD632BE40AA6A082F4CA17E355BAD73CE73E2C5/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Wiley Subscription Services, Inc., A Wiley Company</publisherName><publisherLoc>Hoboken</publisherLoc></publisherInfo><doi registered="yes">10.1002/(ISSN)1531-8257</doi><issn type="print">0885-3185</issn><issn type="electronic">1531-8257</issn><idGroup><id type="product" value="MDS"></id></idGroup><titleGroup><title type="main" xml:lang="en" sort="MOVEMENT DISORDERS">Movement Disorders</title><title type="short">Mov. Disord.</title></titleGroup></publicationMeta><publicationMeta level="part" position="30"><doi origin="wiley" registered="yes">10.1002/mds.v21:3</doi><numberingGroup><numbering type="journalVolume" number="21">21</numbering><numbering type="journalIssue">3</numbering></numberingGroup><coverDate startDate="2006-03">March 2006</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="110" status="forIssue"><doi origin="wiley" registered="yes">10.1002/mds.20728</doi><idGroup><id type="unit" value="MDS20728"></id></idGroup><countGroup><count type="pageTotal" number="8"></count></countGroup><titleGroup><title type="articleCategory">Research Article</title><title type="tocHeading1">Research Articles</title></titleGroup><copyright ownership="thirdParty">Copyright © 2005 Movement Disorder Society</copyright><eventGroup><event type="manuscriptReceived" date="2005-01-30"></event><event type="manuscriptRevised" date="2005-05-26"></event><event type="manuscriptAccepted" date="2005-07-11"></event><event type="firstOnline" date="2005-10-06"></event><event type="publishedOnlineFinalForm" date="2006-03-09"></event><event type="publishedOnlineAcceptedOrEarlyUnpaginated" date="2005-10-06"></event><event type="xmlConverted" agent="Converter:JWSART34_TO_WML3G version:3.2.9 mode:FullText" date="2014-02-21"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.2.9 mode:FullText" date="2014-02-21"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-31"></event></eventGroup><numberingGroup><numbering type="pageFirst">354</numbering><numbering type="pageLast">361</numbering></numberingGroup><correspondenceTo>Department of Neurology, University Schleswig‐Holstein, Campus Kiel, Schittenhelmstrasse 10, D‐24105 Kiel, Germany</correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:MDS.MDS20728.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="figureTotal" number="2"></count><count type="tableTotal" number="2"></count><count type="referenceTotal" number="63"></count><count type="wordTotal" number="5592"></count></countGroup><titleGroup><title type="main" xml:lang="en">Subthalamic nucleus influences spatial orientation in extrapersonal space</title><title type="short" xml:lang="en">Subthalamic Nucleus</title></titleGroup><creators><creator xml:id="au1" creatorRole="author" affiliationRef="#af1"><personName><givenNames>Karsten</givenNames><familyName>Witt</familyName><degrees>MD</degrees></personName></creator><creator xml:id="au2" creatorRole="author" affiliationRef="#af1"><personName><givenNames>Florian</givenNames><familyName>Kopper</familyName><degrees>MD</degrees></personName></creator><creator xml:id="au3" creatorRole="author" affiliationRef="#af1" corresponding="yes"><personName><givenNames>Günther</givenNames><familyName>Deuschl</familyName><degrees>MD</degrees></personName><contactDetails><email normalForm="g.deuschl@neurologie.uni-kiel.de">g.deuschl@neurologie.uni‐kiel.de</email></contactDetails></creator><creator xml:id="au4" creatorRole="author" affiliationRef="#af2"><personName><givenNames>Paul</givenNames><familyName>Krack</familyName><degrees>MD</degrees></personName></creator></creators><affiliationGroup><affiliation xml:id="af1" countryCode="DE" type="organization"><unparsedAffiliation>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</unparsedAffiliation></affiliation><affiliation xml:id="af2" countryCode="FR" type="organization"><unparsedAffiliation>Department of Clinical and Biological Neurosciences, Service de Neurologie, Centre Hospitalier Universitaire de Grenoble, Grenoble, France</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en" type="author"><keyword xml:id="kwd1">subthalamic nucleus</keyword><keyword xml:id="kwd2">deep brain stimulation</keyword><keyword xml:id="kwd3">spatial orientation</keyword><keyword xml:id="kwd4">neglect</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Abstract</title><p>While the role of frontal and parietal cortex in spatial orientation has been studied extensively, the contribution of the basal ganglia and especially the subthalamic nucleus to spatial orientation remains less clear. Here we use subthalamic nucleus (STN) deep brain stimulation (DBS) in Parkinson's disease (PD) as a reversible model of functional lesioning to evaluate the influence of the STN in extrapersonal space orientation. To this end, 12 PD patients were examined 1 year after implantation of DBS electrodes in the STN after overnight withdrawal of <sc>L</sc>‐dopa. Patients were tested in a pseudorandomized order while both stimulators, the right only, the left only, or no stimulator, were switched on. Patients performed line bisection and a reaction time task responding to stimuli of the middle, the left, and the right extrapersonal space. A separate assessment of the right and left hand responding to visual stimuli in each hemispace made it possible to distinguish hemispatial and hemimotor impairments. No asymmetries in space orientation were found when both stimulators were switched OFF, when both stimulators were switched ON, and when only the right stimulator was switched ON. When only the left subthalamic stimulation was switched ON, the reaction times of both hands to visual stimuli in the left extrapersonal hemispace increased significantly and the line bisection test showed a significant orientation to the right. These results lead to the conclusion that the STN and its cortical projections influence the network involved in visuospatial orientation. These patterns of symptoms of neglect demonstrate the influence of the STN on the attentional system of the nondominant hemisphere. © 2005 Movement Disorder Society</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Subthalamic nucleus influences spatial orientation in extrapersonal space</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Subthalamic Nucleus</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Subthalamic nucleus influences spatial orientation in extrapersonal space</title></titleInfo><name type="personal"><namePart type="given">Karsten</namePart><namePart type="family">Witt</namePart><namePart type="termsOfAddress">MD</namePart><affiliation>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Florian</namePart><namePart type="family">Kopper</namePart><namePart type="termsOfAddress">MD</namePart><affiliation>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Günther</namePart><namePart type="family">Deuschl</namePart><namePart type="termsOfAddress">MD</namePart><affiliation>Department of Neurology, University Schleswig‐Holstein, Kiel, Germany</affiliation><affiliation>Department of Neurology, University Schleswig‐Holstein, Campus Kiel, Schittenhelmstrasse 10, D‐24105 Kiel, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Paul</namePart><namePart type="family">Krack</namePart><namePart type="termsOfAddress">MD</namePart><affiliation>Department of Clinical and Biological Neurosciences, Service de Neurologie, Centre Hospitalier Universitaire de Grenoble, Grenoble, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><place><placeTerm type="text">Hoboken</placeTerm></place><dateIssued encoding="w3cdtf">2006-03</dateIssued><dateCaptured encoding="w3cdtf">2005-01-30</dateCaptured><dateValid encoding="w3cdtf">2005-07-11</dateValid><copyrightDate encoding="w3cdtf">2006</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">2</extent><extent unit="tables">2</extent><extent unit="references">63</extent><extent unit="words">5592</extent></physicalDescription><abstract lang="en">While the role of frontal and parietal cortex in spatial orientation has been studied extensively, the contribution of the basal ganglia and especially the subthalamic nucleus to spatial orientation remains less clear. Here we use subthalamic nucleus (STN) deep brain stimulation (DBS) in Parkinson's disease (PD) as a reversible model of functional lesioning to evaluate the influence of the STN in extrapersonal space orientation. To this end, 12 PD patients were examined 1 year after implantation of DBS electrodes in the STN after overnight withdrawal of L‐dopa. Patients were tested in a pseudorandomized order while both stimulators, the right only, the left only, or no stimulator, were switched on. Patients performed line bisection and a reaction time task responding to stimuli of the middle, the left, and the right extrapersonal space. A separate assessment of the right and left hand responding to visual stimuli in each hemispace made it possible to distinguish hemispatial and hemimotor impairments. No asymmetries in space orientation were found when both stimulators were switched OFF, when both stimulators were switched ON, and when only the right stimulator was switched ON. When only the left subthalamic stimulation was switched ON, the reaction times of both hands to visual stimuli in the left extrapersonal hemispace increased significantly and the line bisection test showed a significant orientation to the right. These results lead to the conclusion that the STN and its cortical projections influence the network involved in visuospatial orientation. These patterns of symptoms of neglect demonstrate the influence of the STN on the attentional system of the nondominant hemisphere. © 2005 Movement Disorder Society</abstract><subject lang="en"><genre>keywords</genre><topic>subthalamic nucleus</topic><topic>deep brain stimulation</topic><topic>spatial orientation</topic><topic>neglect</topic></subject><relatedItem type="host"><titleInfo><title>Movement Disorders</title></titleInfo><titleInfo type="abbreviated"><title>Mov. Disord.</title></titleInfo><genre type="journal">journal</genre><subject><genre>article-category</genre><topic>Research Article</topic></subject><identifier type="ISSN">0885-3185</identifier><identifier type="eISSN">1531-8257</identifier><identifier type="DOI">10.1002/(ISSN)1531-8257</identifier><identifier type="PublisherID">MDS</identifier><part><date>2006</date><detail type="volume"><caption>vol.</caption><number>21</number></detail><detail type="issue"><caption>no.</caption><number>3</number></detail><extent unit="pages"><start>354</start><end>361</end><total>8</total></extent></part></relatedItem><identifier type="istex">2DD632BE40AA6A082F4CA17E355BAD73CE73E2C5</identifier><identifier type="DOI">10.1002/mds.20728</identifier><identifier type="ArticleID">MDS20728</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright © 2005 Movement Disorder Society</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Wiley Subscription Services, Inc., A Wiley Company</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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