Postural reactions to neck vibration in Parkinson's disease
Identifieur interne : 001960 ( PascalFrancis/Checkpoint ); précédent : 001959; suivant : 001961Postural reactions to neck vibration in Parkinson's disease
Auteurs : Peter Valkovic [Allemagne, Slovaquie] ; Siegbert Krafczyk [Allemagne] ; Marian Saling [Slovaquie] ; Jan Benetin [Slovaquie] ; Kai Botzel [Allemagne]Source :
- Movement disorders [ 0885-3185 ] ; 2006.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
To test the hypothesis that reduced reactions to proprioceptive input signals contribute to postural instability in Parkinson's disease (PD), pulses of mechanical vibration were applied to the neck muscles of PD patients and healthy controls. This stimulus elicits postural reactions in standing subjects. Participating were 13 moderately affected PD patients, 13 severely affected PD patients, and 13 age-matched healthy subjects. Patients were tested on and off medication. Three-second-long pulses of vibration were regularly (10 times) applied to the posterior neck muscles while subjects kept their eyes open or closed. Postural responses to the stimuli were measured by static posturography. No intergroup difference in the pattern and latencies of responses was found. However, the amplitudes of the postural reactions (shift of center of foot pressure) were significantly larger in advanced PD patients; those of moderately affected PD patients did not differ from those of control subjects. Moreover, the size of postural responses in both latter groups decreased across the trial contrary to that of advanced PD patients. Comparison of the measures during on and off testing revealed no significant differences. These results indicate that neither afferent proprioceptive deficits nor central integrative functions but rather scaling and habituation of erroneous proprioceptive information are disturbed in the postural control of advanced PD. Nondopaminergic structures seem to be responsible for this impairment.
Affiliations:
- Allemagne, Slovaquie
- Bavière, District de Haute-Bavière
- Munich
- Université Louis-et-Maximilien de Munich
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aut.</sZ></inist:fA14><country>Slovaquie</country><wicri:noRegion>Bratislava</wicri:noRegion></affiliation></author><author><name sortKey="Krafczyk, Siegbert" sort="Krafczyk, Siegbert" uniqKey="Krafczyk S" first="Siegbert" last="Krafczyk">Siegbert Krafczyk</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Neurology, Ludwig-Maximilians University</s1><s2>Munich</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="1">Bavière</region><region type="district" nuts="2">District de Haute-Bavière</region><settlement type="city">Munich</settlement></placeName><orgName type="university">Université Louis-et-Maximilien de Munich</orgName></affiliation></author><author><name sortKey="Saling, Marian" sort="Saling, Marian" uniqKey="Saling M" first="Marian" last="Saling">Marian Saling</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Second Department of Neurology, School of Medicine, 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last="Valkovic">Peter Valkovic</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Neurology, Ludwig-Maximilians University</s1><s2>Munich</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="1">Bavière</region><region type="district" nuts="2">District de Haute-Bavière</region><settlement type="city">Munich</settlement></placeName><orgName type="university">Université Louis-et-Maximilien de Munich</orgName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Second Department of Neurology, School of Medicine, Comenius University</s1><s2>Bratislava</s2><s3>SVK</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Slovaquie</country><wicri:noRegion>Bratislava</wicri:noRegion></affiliation></author><author><name sortKey="Krafczyk, Siegbert" sort="Krafczyk, Siegbert" uniqKey="Krafczyk S" first="Siegbert" last="Krafczyk">Siegbert Krafczyk</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Neurology, Ludwig-Maximilians University</s1><s2>Munich</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="1">Bavière</region><region type="district" nuts="2">District de Haute-Bavière</region><settlement type="city">Munich</settlement></placeName><orgName type="university">Université Louis-et-Maximilien de Munich</orgName></affiliation></author><author><name sortKey="Saling, Marian" sort="Saling, Marian" uniqKey="Saling M" first="Marian" last="Saling">Marian Saling</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Second Department of Neurology, School of Medicine, Comenius University</s1><s2>Bratislava</s2><s3>SVK</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Slovaquie</country><wicri:noRegion>Bratislava</wicri:noRegion></affiliation></author><author><name sortKey="Benetin, Jan" sort="Benetin, Jan" uniqKey="Benetin J" first="Jan" last="Benetin">Jan Benetin</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Second Department of Neurology, School of Medicine, Comenius University</s1><s2>Bratislava</s2><s3>SVK</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Slovaquie</country><wicri:noRegion>Bratislava</wicri:noRegion></affiliation></author><author><name sortKey="Botzel, Kai" sort="Botzel, Kai" uniqKey="Botzel K" first="Kai" last="Botzel">Kai Botzel</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Neurology, Ludwig-Maximilians University</s1><s2>Munich</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Allemagne</country><placeName><region type="land" nuts="1">Bavière</region><region type="district" nuts="2">District de Haute-Bavière</region><settlement type="city">Munich</settlement></placeName><orgName type="university">Université Louis-et-Maximilien de Munich</orgName></affiliation></author></analytic><series><title level="j" type="main">Movement disorders</title><title level="j" type="abbreviated">Mov. disord.</title><idno type="ISSN">0885-3185</idno><imprint><date when="2006">2006</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Movement disorders</title><title level="j" type="abbreviated">Mov. disord.</title><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Instability</term><term>Neck</term><term>Nervous system diseases</term><term>Parkinson disease</term><term>Posture</term><term>Proprioception</term><term>Vibration disease</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Système nerveux pathologie</term><term>Vibration maladie</term><term>Parkinson maladie</term><term>Cou</term><term>Posture</term><term>Instabilité</term><term>Proprioception</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">To test the hypothesis that reduced reactions to proprioceptive input signals contribute to postural instability in Parkinson's disease (PD), pulses of mechanical vibration were applied to the neck muscles of PD patients and healthy controls. This stimulus elicits postural reactions in standing subjects. Participating were 13 moderately affected PD patients, 13 severely affected PD patients, and 13 age-matched healthy subjects. Patients were tested on and off medication. Three-second-long pulses of vibration were regularly (10 times) applied to the posterior neck muscles while subjects kept their eyes open or closed. Postural responses to the stimuli were measured by static posturography. No intergroup difference in the pattern and latencies of responses was found. However, the amplitudes of the postural reactions (shift of center of foot pressure) were significantly larger in advanced PD patients; those of moderately affected PD patients did not differ from those of control subjects. Moreover, the size of postural responses in both latter groups decreased across the trial contrary to that of advanced PD patients. Comparison of the measures during on and off testing revealed no significant differences. These results indicate that neither afferent proprioceptive deficits nor central integrative functions but rather scaling and habituation of erroneous proprioceptive information are disturbed in the postural control of advanced PD. Nondopaminergic structures seem to be responsible for this impairment.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0885-3185</s0></fA01><fA03 i2="1"><s0>Mov. disord.</s0></fA03><fA05><s2>21</s2></fA05><fA06><s2>1</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Postural reactions to neck vibration in Parkinson's disease</s1></fA08><fA11 i1="01" i2="1"><s1>VALKOVIC (Peter)</s1></fA11><fA11 i1="02" i2="1"><s1>KRAFCZYK (Siegbert)</s1></fA11><fA11 i1="03" i2="1"><s1>SALING (Marian)</s1></fA11><fA11 i1="04" i2="1"><s1>BENETIN (Jan)</s1></fA11><fA11 i1="05" i2="1"><s1>BOTZEL (Kai)</s1></fA11><fA14 i1="01"><s1>Department of Neurology, Ludwig-Maximilians University</s1><s2>Munich</s2><s3>DEU</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ></fA14><fA14 i1="02"><s1>Second Department of Neurology, School of Medicine, Comenius University</s1><s2>Bratislava</s2><s3>SVK</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></fA14><fA20><s1>59-65</s1></fA20><fA21><s1>2006</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>20953</s2><s5>354000133169150080</s5></fA43><fA44><s0>0000</s0><s1>© 2006 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>37 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>06-0135494</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Movement disorders</s0></fA64><fA66 i1="01"><s0>USA</s0></fA66><fC01 i1="01" l="ENG"><s0>To test the hypothesis that reduced reactions to proprioceptive input signals contribute to postural instability in Parkinson's disease (PD), pulses of mechanical vibration were applied to the neck muscles of PD patients and healthy controls. This stimulus elicits postural reactions in standing subjects. Participating were 13 moderately affected PD patients, 13 severely affected PD patients, and 13 age-matched healthy subjects. Patients were tested on and off medication. Three-second-long pulses of vibration were regularly (10 times) applied to the posterior neck muscles while subjects kept their eyes open or closed. Postural responses to the stimuli were measured by static posturography. No intergroup difference in the pattern and latencies of responses was found. However, the amplitudes of the postural reactions (shift of center of foot pressure) were significantly larger in advanced PD patients; those of moderately affected PD patients did not differ from those of control subjects. Moreover, the size of postural responses in both latter groups decreased across the trial contrary to that of advanced PD patients. Comparison of the measures during on and off testing revealed no significant differences. These results indicate that neither afferent proprioceptive deficits nor central integrative functions but rather scaling and habituation of erroneous proprioceptive information are disturbed in the postural control of advanced PD. 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