Evidence map›Paper›PMID 24090949›Full record

ArticleParkinsonism & related disorders2014

Dopaminergic modulation of motor coordinaton in Parkinson's disease.

Jaebum Park, Mechelle M Lewis, Xuemei Huang, Mark L Latash

Open access · greenAbstract read
In one paragraph

Article in Parkinsonism & related disorders, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 12% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 55 citations in OpenAlex.

  1. Pooled it
  2. Dopaminergic modulation of multi-muscle synergies in postural tasks performed by patients with Parkinson's disease.Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology · 2017
    Trial
  3. Finger force changes in the absence of visual feedback in patients with Parkinson's disease.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2016
    Trial
  4. Article
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  8. Article
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  11. Article
  12. Article
  13. Review
  14. One more time about motor (and non-motor) synergies.Experimental brain research · 2021
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Systemic effects of deep brain stimulation on synergic control in Parkinson's disease.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2018
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Jaebum ParkDepartment of Kinesiology, The Pennsylvania State University, Rec. Hall-268N, University Park, PA 16802, USA.
Mechelle M LewisDepartment of Neurology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA 17033, USA; Department of Pharmacology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA 17033, USA.
Xuemei HuangDepartment of Kinesiology, The Pennsylvania State University, Rec. Hall-268N, University Park, PA 16802, USA; Department of Neurology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA 17033, USA; Department of Pharmacology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA 17033, USA; Department of Radiology, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA 17033, USA; Department of Neurosurgery, Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, PA 17033, USA.
Mark L LatashDepartment of Kinesiology, The Pennsylvania State University, Rec. Hall-268N, University Park, PA 16802, USA. Electronic address: mll11@psu.edu.
Pennsylvania State University · USPenn State Milton S. Hershey Medical Center · US

Funding

Regional Brain Manganese Accumulation and Functional Consequences in WeldersR01ES019672 · NIEHS · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI HUANG, XUEMEI · 2011 to 2021
$5.9M
THE ORGANIZATION OF A SIMPLE SYNERGYR01NS035032 · NINDS · PENNSYLVANIA STATE UNIVERSITY-UNIV PARK · PI LATASH, MARK L · 1997 to 2015
$4.3M
Multimodal MRI Markers of Nigrostriatal Pathology in Parkinson's DiseaseU01NS082151 · NINDS · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI HUANG, XUEMEI · 2012 to 2016
$4.2M
Structural MRI marker(s) of Parkinson's Disease's ProgressionR01NS060722 · NINDS · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI HUANG, XUEMEI · 2009 to 2013
$2.9M
NIEHS NIH HHS R01 ES019672NINDS NIH HHS R01 NS035032NINDS NIH HHS R01 NS060722NINDS NIH HHS U01 NS082151
6 · The paper itself

Abstract

backgroundWe applied the idea of synergies and the framework of the uncontrolled manifold hypothesis to explore the effects of dopamine replacement therapy on finger interaction and coordination in patients with early-stage Parkinson's disease (PD).

methodsEight patients performed single-finger and multi-finger force production tasks with both the dominant and non-dominant hand before (off-drug) and after (on-drug) taking their dopaminergic medications. Synergy indices were defined as co-varied adjustments of commands to fingers that stabilized the total force produced by the hand.

resultsPD patients showed significantly lower maximal finger forces off-drug compared to the on-drug condition, while indices of finger individuation (enslaving) were unchanged. The synergy indices were weaker during steady-state force production off-drug compared to on-drug. Anticipatory adjustments of synergies prior to the quick force pulse initiation were delayed and reduced off-drug as compared to the on-drug condition. These drug effects were observed in both the symptomatic and asymptomatic hands of the patients whose symptoms were limited to one side of the body.

conclusionsThe study demonstrates dopaminergic modulation of motor coordination in PD and supports that the analysis of different components of multi-finger synergies offers a set of indices sensitive to the effects of dopamine replacement therapy in early-stage PD. The results suggest an important role of the basal ganglia in synergy formation and in feed-forward synergy adjustments. Future studies using these methods may yield more objective, quantitative biomarker(s) of motor coordination impairments in PD, and better understanding of subcortical involvement in the neural control of natural actions.

Indexed as

AgedAntiparkinson AgentsFemaleFingersHumansLevodopaMaleMiddle AgedMuscle ContractionParkinson DiseasePsychomotor PerformanceAntiparkinson AgentsLevodopaFeed-forward controlFingerParkinson's diseaseSynergyUncontrolled manifold hypothesis

Identifiers

PMID24090949
PMCPMC3946854
OpenAlexW1972600803

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.