Influence of visual cues on gait in Parkinson's disease : Contribution to attention or sensory dependence?
Identifieur interne : 002E41 ( Main/Merge ); précédent : 002E40; suivant : 002E42Influence of visual cues on gait in Parkinson's disease : Contribution to attention or sensory dependence?
Auteurs : Jean-Philippe Azulay [France] ; Serge Mesure [France] ; Olivier Blin [France]Source :
- Journal of the neurological sciences [ 0022-510X ] ; 2006.
Descripteurs français
- Pascal (Inist)
English descriptors
Abstract
Sensory cueing is used for a long time to improve gait in patients with Parkinson's disease. This has been established for visual cues such as stripes on floor and for rhythmic auditory cues. Concerning visual cueing two main mechanisms of action have been suggested and may be suitable depending on the instruction given to the patients. Stripes placed on the walking surface may draw attention to the stepping process if patients are talked to put their feet on the stripes. In another paradigm, the stripes on floor are just used to enhance the optical flow and the motion of the stripes is essential to improve gait. These findings are not found in normal controls suggesting that patients with Parkinson's disease are more dependent on dynamic visual cues for gait control than controls. Several common characteristics exist between attention and sensory contribution in gait control. First, their potential beneficial effect may be contre-balanced by a negative influence: visual information may be helpful for gait in patients or may disrupt locomotion and induce freezing (for example passing a door). Attention focused on gait allows a partial correction of the troubles by intentional modulation of the stride length but a dual task flowing attention away produces deterioration. Another point is that both strategies are probably used by the central nervous system to compensate deficits: visual dependence to compensate an impaired kinesthetic feed-back and attentional processing to alleviate automaticity in locomotion and so, to by-pass the deficit of internal cueing.
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Mesure</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CNRS unit "développement et Pathologie de l'Action", University Hospital la Timone</s1><s2>13385 Marseille</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">Marseille</settlement></placeName></affiliation></author><author><name sortKey="Blin, Olivier" sort="Blin, Olivier" uniqKey="Blin O" first="Olivier" last="Blin">Olivier Blin</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Clinical Pharmacology, University Hospital la Timone</s1><s2>13385 Marseille</s2><s3>FRA</s3><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">Marseille</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Journal of the neurological sciences</title><title level="j" type="abbreviated">J. neurol. sci.</title><idno type="ISSN">0022-510X</idno><imprint><date when="2006">2006</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of the neurological sciences</title><title level="j" type="abbreviated">J. neurol. sci.</title><idno type="ISSN">0022-510X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Attention</term><term>Dependence</term><term>Locomotion</term><term>Nervous system diseases</term><term>Parkinson disease</term><term>Visual cue</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Système nerveux pathologie</term><term>Parkinson maladie</term><term>Repère visuel</term><term>Attention</term><term>Dépendance</term><term>Locomotion</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Sensory cueing is used for a long time to improve gait in patients with Parkinson's disease. This has been established for visual cues such as stripes on floor and for rhythmic auditory cues. Concerning visual cueing two main mechanisms of action have been suggested and may be suitable depending on the instruction given to the patients. Stripes placed on the walking surface may draw attention to the stepping process if patients are talked to put their feet on the stripes. In another paradigm, the stripes on floor are just used to enhance the optical flow and the motion of the stripes is essential to improve gait. These findings are not found in normal controls suggesting that patients with Parkinson's disease are more dependent on dynamic visual cues for gait control than controls. Several common characteristics exist between attention and sensory contribution in gait control. First, their potential beneficial effect may be contre-balanced by a negative influence: visual information may be helpful for gait in patients or may disrupt locomotion and induce freezing (for example passing a door). Attention focused on gait allows a partial correction of the troubles by intentional modulation of the stride length but a dual task flowing attention away produces deterioration. Another point is that both strategies are probably used by the central nervous system to compensate deficits: visual dependence to compensate an impaired kinesthetic feed-back and attentional processing to alleviate automaticity in locomotion and so, to by-pass the deficit of internal cueing.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Provence-Alpes-Côte d'Azur</li></region><settlement><li>Marseille</li></settlement></list><tree><country name="France"><region name="Provence-Alpes-Côte d'Azur"><name sortKey="Azulay, Jean Philippe" sort="Azulay, Jean Philippe" uniqKey="Azulay J" first="Jean-Philippe" last="Azulay">Jean-Philippe Azulay</name></region><name sortKey="Azulay, Jean Philippe" sort="Azulay, Jean Philippe" uniqKey="Azulay J" first="Jean-Philippe" last="Azulay">Jean-Philippe Azulay</name><name sortKey="Blin, Olivier" sort="Blin, Olivier" uniqKey="Blin O" first="Olivier" last="Blin">Olivier Blin</name><name sortKey="Mesure, Serge" sort="Mesure, Serge" uniqKey="Mesure S" first="Serge" last="Mesure">Serge Mesure</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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