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Tactile/proprioceptive integration during arm localization is intact in individuals with Parkinson’s disease

Identifieur interne : 001396 ( Ncbi/Checkpoint ); précédent : 001395; suivant : 001397

Tactile/proprioceptive integration during arm localization is intact in individuals with Parkinson’s disease

Auteurs : Ely Rabin ; Lisa Muratori ; Konstantina Svokos ; Andrew Gordon

Source :

Neuroscience letters [ 0304-3940 ] ; 2009.

RBID : PMC:2814986

Abstract

It has been theorized that sensorimotor processing deficits underlie Parkinson’s disease (PD) motor impairments including movement under proprioceptive control. However, it is possible that these sensorimotor processing deficits exclude tactile/proprioception sensorimotor integration: prior studies show improved movement accuracy in PD with endpoint tactile feedback, and good control in tactile-driven precision-grip tasks.

To determine whether tactile/proprioceptive integration in particular is affected by PD, nine subjects with PD (off-medication, UPDRS motor=19-42) performed an arm-matching task without visual feedback. In some trials one arm touched a static tactile cue that conflicted with dynamic proprioceptive feedback from biceps brachii muscle vibration. This sensory conflict paradigm has characterized tactile/proprioceptive integration in healthy subjects as specific to the context of tactile cue mobility assumptions and the intention to move the arm.

We found that the individuals with PD had poorer arm-matching acuracy than age-matched control subjects. However, PD-group accuracy improved with tactile feedback. Furthermore, sensory conflict conditions were resolved in the same context-dependent fashion by both subject groups. We conclude that the somatosensory integration mechanism for prioritizing tactile and proprioception feedback in this task are not disrupted by PD, and are not related to the observed proprioceptive deficits.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2814986

DOI: 10.1016/j.neulet.2009.12.051
PubMed: 20036715
PubMed Central: 2814986

Affiliations:

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PMC:2814986

Le document en format XML

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<wicri:noCountry code="subfield">New York College of Osteopathic Medicine</wicri:noCountry>
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<author><name sortKey="Muratori, Lisa" sort="Muratori, Lisa" uniqKey="Muratori L" first="Lisa" last="Muratori">Lisa Muratori</name>
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<author><name sortKey="Svokos, Konstantina" sort="Svokos, Konstantina" uniqKey="Svokos K" first="Konstantina" last="Svokos">Konstantina Svokos</name>
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<front><div type="abstract" xml:lang="en"><p id="P1">It has been theorized that sensorimotor processing deficits underlie Parkinson’s disease (PD) motor impairments including movement under proprioceptive control. However, it is possible that these sensorimotor processing deficits exclude tactile/proprioception sensorimotor integration: prior studies show improved movement accuracy in PD with endpoint tactile feedback, and good control in tactile-driven precision-grip tasks.</p>
<p id="P2">To determine whether tactile/proprioceptive integration in particular is affected by PD, nine subjects with PD (off-medication, UPDRS motor=19-42) performed an arm-matching task without visual feedback. In some trials one arm touched a <italic>static</italic>
 tactile cue that conflicted with <italic>dynamic</italic>
 proprioceptive feedback from biceps brachii muscle vibration. This sensory conflict paradigm has characterized tactile/proprioceptive integration in healthy subjects as specific to the context of tactile cue mobility assumptions and the intention to move the arm.</p>
<p id="P3">We found that the individuals with PD had poorer arm-matching acuracy than age-matched control subjects. However, PD-group accuracy improved with tactile feedback. Furthermore, sensory conflict conditions were resolved in the same context-dependent fashion by both subject groups. We conclude that the somatosensory integration mechanism for prioritizing tactile and proprioception feedback in this task are not disrupted by PD, and are not related to the observed proprioceptive deficits.</p>
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Tactile/proprioceptive integration during arm localization is intact in individuals with Parkinson’s disease

Tactile/proprioceptive integration during arm localization is intact in individuals with Parkinson’s disease

Source :

Abstract

Links toward previous steps (curation, corpus...)

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Le document en format XML

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Pour générer des pages wiki