Evidence map›Paper›PMID 32175656›Full record

ArticleMovement disorders : official journal of the Movement Disorder Society2020

Re-emergent Tremor in Parkinson's Disease: The Role of the Motor Cortex.

Giorgio Leodori, Daniele Belvisi, Maria I De Bartolo, Andrea Fabbrini, Matteo Costanzo, Felipe Vial, Antonella Conte, Mark Hallett, Alfredo Berardelli

Open access · greenAbstract read
In one paragraph

Article in Movement disorders : official journal of the Movement Disorder Society, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 8% 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

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 54 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Clinical utility and prospective of TMS-EEG: Updated review from an international expert group.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2026
    Review
  5. Article
  6. Article
  7. Tremor pathophysiology.Clinical parkinsonism & related disorders · 2026
    Review
  8. The evolution of tremor in Parkinson's Disease: insights from a 4-year longitudinal assessment.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Article
  9. Article
  10. Re-Emergent Vocal Tremor in a Patient with Parkinson's Disease.Movement disorders clinical practice · 2025
    Article
  11. Article
  12. Oscillatory Coupling Between Thalamus, Cerebellum, and Motor Cortex in Essential Tremor.Movement disorders : official journal of the Movement Disorder Society · 2025
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Resting and re-emergent jaw tremor as the presenting symptom of Parkinson's disease.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
    Article
  18. The role of laboratory investigations in the classification of tremors.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2023
    Review
  19. Review
  20. Distal Upper Limb Tremor during Walking in Parkinson's Disease.Movement disorders clinical practice · 2023
    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

9 authors at 3 institutions in 3 countries.

Giorgio LeodoriIRCCS NEUROMED, Pozzilli, Italy.
Daniele BelvisiIRCCS NEUROMED, Pozzilli, Italy.
Maria I De BartoloIRCCS NEUROMED, Pozzilli, Italy.
Andrea FabbriniIRCCS NEUROMED, Pozzilli, Italy.
Matteo CostanzoDepartment of Human Neuroscience, Sapienza University of Rome, Rome, Italy.
Felipe VialHuman Motor Control Section, NINDS, NIH, Bethesda, Maryland, USA.
Antonella ConteIRCCS NEUROMED, Pozzilli, Italy.
Mark HallettHuman Motor Control Section, NINDS, NIH, Bethesda, Maryland, USA.ORCID 0000-0002-3180-6811
Alfredo BerardelliIRCCS NEUROMED, Pozzilli, Italy.
Istituto Neurologico Mediterraneo · ITNational Institutes of Health · USSapienza University of Rome · IT

Funding

Intramural NIH HHS Z99 NS999999
6 · The paper itself

Abstract

backgroundParkinson's disease patients may show a tremor that appears after a variable delay while the arms are kept outstretched (re-emergent tremor). The objectives of this study were to investigate re-emergent tremor pathophysiology by studying the role of the primary motor cortex in this tremor and making a comparison with rest tremor.

methodsWe enrolled 10 Parkinson's disease patients with both re-emergent and rest tremor. Tremor was assessed by spectral analysis, corticomuscular coherence and tremor-resetting produced by transcranial magnetic stimulation over the primary motor cortex. We also recorded transcranial magnetic stimulation-evoked potentials generated by motor cortex stimulation during rest tremor, tremor suppression during wrist extension, and re-emergent tremor. Spectral analysis, corticomuscular coherence, and tremor resetting were compared between re-emergent tremor and rest tremor.

resultsRe-emergent tremor showed significant corticomuscular coherence, causal relation between motor cortex activity and tremor muscle and tremor resetting. The P60 component of transcranial magnetic stimulation-evoked potentials reduced in amplitude during tremor suppression, recovered before re-emergent tremor, was facilitated at re-emergent tremor onset, and returned to values similar to those of rest tremor during re-emergent tremor. Compared with rest tremor, re-emergent tremor showed similar corticomuscular coherence and tremor resetting, but slightly higher frequency.

conclusionsRe-emergent tremor is causally related with the activity of the primary motor cortex, which is likely a convergence node in the network that generates re-emergent tremor. Re-emergent tremor and rest tremor share common pathophysiological mechanisms in which the motor cortex plays a crucial role. © 2020 International Parkinson and Movement Disorder Society.

Indexed as

Motor CortexParkinson DiseaseHumansTranscranial Magnetic StimulationTremorWristclinical neurophysiologymotor cortexParkinson's diseaseTMS-EEGtremor

Identifiers

PMID32175656
PMCPMC8448579
OpenAlexW3012173007

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.