Visual control of locomotion in Parkinson's disease.
Identifieur interne : 000005 ( Ncbi/Merge ); précédent : 000004; suivant : 000006Visual control of locomotion in Parkinson's disease.
Auteurs : J P Azulay [France] ; S. Mesure ; B. Amblard ; O. Blin ; I. Sangla ; J. PougetSource :
- Brain : a journal of neurology [ 0006-8950 ] ; 1999.
English descriptors
- KwdEn :
- MESH :
- methods : Photic Stimulation.
- physiology : Gait, Psychomotor Performance, Walking.
- physiopathology : Parkinson Disease.
- psychology : Parkinson Disease.
- Aged, Cues, Female, Humans, Male, Middle Aged, Reference Values.
Abstract
The effect of placing parallel lines on the walking surface on parkinsonian gait was evaluated. To identify the kind of visual cues (static or dynamic) required for the control of locomotion, we tested two visual conditions: normal lighting and stroboscopic illumination (three flashes/s), the latter acting to suppress dynamic visual cues completely. Sixteen subjects with idiopathic Parkinson's disease (nine males, seven females; mean age 68.8 years) and the same number of age-matched controls (seven males; nine females, mean age 67.5 years) were studied. During the baseline phase, Parkinson's disease patients walked with a short-stepped, slow velocity pattern. The double limb support duration was increased and the step cadence was reduced relative to normal. Under normal lighting, visual cues from the lines on the walking surface induced a significant improvement in gait velocity and stride length in Parkinson's disease patients. With stroboscopic illumination and without lines, both groups reduced their stride length and velocity but the changes were significant only in the Parkinson's disease group, indicating greater dependence on dynamic visual information. When stroboscopic light was used with stripes on the floor, the improvement in gait due to the stripes was suppressed in parkinsonian patients. These results demonstrate that the perceived motion of stripes, induced by the patient's walking, is essential to improve the gait parameters and thus favour the hypothesis of a specific visual-motor pathway which is particularly responsive to rapidly moving targets. Previous studies have proposed a cerebellar circuit, allowing the visual stimuli to by-pass the damaged basal ganglia.
PubMed: 10050899
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Pouget</name></author></analytic><series><title level="j">Brain : a journal of neurology</title><idno type="ISSN">0006-8950</idno><imprint><date when="1999" type="published">1999</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aged</term><term>Cues</term><term>Female</term><term>Gait (physiology)</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Parkinson Disease (physiopathology)</term><term>Parkinson Disease (psychology)</term><term>Photic Stimulation (methods)</term><term>Psychomotor Performance (physiology)</term><term>Reference Values</term><term>Walking (physiology)</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Photic Stimulation</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Gait</term><term>Psychomotor Performance</term><term>Walking</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Parkinson Disease</term></keywords><keywords scheme="MESH" qualifier="psychology" xml:lang="en"><term>Parkinson Disease</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Aged</term><term>Cues</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Reference Values</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The effect of placing parallel lines on the walking surface on parkinsonian gait was evaluated. To identify the kind of visual cues (static or dynamic) required for the control of locomotion, we tested two visual conditions: normal lighting and stroboscopic illumination (three flashes/s), the latter acting to suppress dynamic visual cues completely. Sixteen subjects with idiopathic Parkinson's disease (nine males, seven females; mean age 68.8 years) and the same number of age-matched controls (seven males; nine females, mean age 67.5 years) were studied. During the baseline phase, Parkinson's disease patients walked with a short-stepped, slow velocity pattern. The double limb support duration was increased and the step cadence was reduced relative to normal. Under normal lighting, visual cues from the lines on the walking surface induced a significant improvement in gait velocity and stride length in Parkinson's disease patients. With stroboscopic illumination and without lines, both groups reduced their stride length and velocity but the changes were significant only in the Parkinson's disease group, indicating greater dependence on dynamic visual information. When stroboscopic light was used with stripes on the floor, the improvement in gait due to the stripes was suppressed in parkinsonian patients. These results demonstrate that the perceived motion of stripes, induced by the patient's walking, is essential to improve the gait parameters and thus favour the hypothesis of a specific visual-motor pathway which is particularly responsive to rapidly moving targets. Previous studies have proposed a cerebellar circuit, allowing the visual stimuli to by-pass the damaged basal ganglia.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">10050899</PMID><DateCreated><Year>1999</Year><Month>03</Month><Day>30</Day></DateCreated><DateCompleted><Year>1999</Year><Month>03</Month><Day>30</Day></DateCompleted><DateRevised><Year>2006</Year><Month>11</Month><Day>15</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0006-8950</ISSN><JournalIssue CitedMedium="Print"><Volume>122 ( Pt 1)</Volume><PubDate><Year>1999</Year><Month>Jan</Month></PubDate></JournalIssue><Title>Brain : a journal of neurology</Title><ISOAbbreviation>Brain</ISOAbbreviation></Journal><ArticleTitle>Visual control of locomotion in Parkinson's disease.</ArticleTitle><Pagination><MedlinePgn>111-20</MedlinePgn></Pagination><Abstract><AbstractText>The effect of placing parallel lines on the walking surface on parkinsonian gait was evaluated. To identify the kind of visual cues (static or dynamic) required for the control of locomotion, we tested two visual conditions: normal lighting and stroboscopic illumination (three flashes/s), the latter acting to suppress dynamic visual cues completely. Sixteen subjects with idiopathic Parkinson's disease (nine males, seven females; mean age 68.8 years) and the same number of age-matched controls (seven males; nine females, mean age 67.5 years) were studied. During the baseline phase, Parkinson's disease patients walked with a short-stepped, slow velocity pattern. The double limb support duration was increased and the step cadence was reduced relative to normal. Under normal lighting, visual cues from the lines on the walking surface induced a significant improvement in gait velocity and stride length in Parkinson's disease patients. With stroboscopic illumination and without lines, both groups reduced their stride length and velocity but the changes were significant only in the Parkinson's disease group, indicating greater dependence on dynamic visual information. When stroboscopic light was used with stripes on the floor, the improvement in gait due to the stripes was suppressed in parkinsonian patients. These results demonstrate that the perceived motion of stripes, induced by the patient's walking, is essential to improve the gait parameters and thus favour the hypothesis of a specific visual-motor pathway which is particularly responsive to rapidly moving targets. Previous studies have proposed a cerebellar circuit, allowing the visual stimuli to by-pass the damaged basal ganglia.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Azulay</LastName><ForeName>J P</ForeName><Initials>JP</Initials><AffiliationInfo><Affiliation>UPR Neurobiologie et Mouvement, CNRS, Department of Neurology, University Hospital La Timone, Marseille, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Mesure</LastName><ForeName>S</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Amblard</LastName><ForeName>B</ForeName><Initials>B</Initials></Author><Author ValidYN="Y"><LastName>Blin</LastName><ForeName>O</ForeName><Initials>O</Initials></Author><Author ValidYN="Y"><LastName>Sangla</LastName><ForeName>I</ForeName><Initials>I</Initials></Author><Author ValidYN="Y"><LastName>Pouget</LastName><ForeName>J</ForeName><Initials>J</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Brain</MedlineTA><NlmUniqueID>0372537</NlmUniqueID><ISSNLinking>0006-8950</ISSNLinking></MedlineJournalInfo><CitationSubset>AIM</CitationSubset><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000368" MajorTopicYN="N">Aged</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003463" MajorTopicYN="N">Cues</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005260" MajorTopicYN="N">Female</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005684" MajorTopicYN="N">Gait</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D006801" MajorTopicYN="N">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008297" MajorTopicYN="N">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008875" MajorTopicYN="N">Middle Aged</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010300" MajorTopicYN="N">Parkinson Disease</DescriptorName><QualifierName UI="Q000503" MajorTopicYN="N">physiopathology</QualifierName><QualifierName UI="Q000523" MajorTopicYN="Y">psychology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010775" MajorTopicYN="N">Photic Stimulation</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="N">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011597" MajorTopicYN="N">Psychomotor Performance</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012016" MajorTopicYN="N">Reference Values</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D016138" MajorTopicYN="N">Walking</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1999</Year><Month>3</Month><Day>2</Day></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1999</Year><Month>3</Month><Day>2</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1999</Year><Month>3</Month><Day>2</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">10050899</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>France</li></country><region><li>Provence-Alpes-Côte d'Azur</li></region><settlement><li>Marseille</li></settlement></list><tree><noCountry><name sortKey="Amblard, B" sort="Amblard, B" uniqKey="Amblard B" first="B" last="Amblard">B. Amblard</name><name sortKey="Blin, O" sort="Blin, O" uniqKey="Blin O" first="O" last="Blin">O. Blin</name><name sortKey="Mesure, S" sort="Mesure, S" uniqKey="Mesure S" first="S" last="Mesure">S. Mesure</name><name sortKey="Pouget, J" sort="Pouget, J" uniqKey="Pouget J" first="J" last="Pouget">J. Pouget</name><name sortKey="Sangla, I" sort="Sangla, I" uniqKey="Sangla I" first="I" last="Sangla">I. Sangla</name></noCountry><country name="France"><region name="Provence-Alpes-Côte d'Azur"><name sortKey="Azulay, J P" sort="Azulay, J P" uniqKey="Azulay J" first="J P" last="Azulay">J P Azulay</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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