Evidence map›Paper›PMID 32916466›Full record

ArticleNeuroImage. Clinical2020

Longitudinal functional connectivity changes related to dopaminergic decline in Parkinson's disease.

Weihua Li, Nick P Lao-Kaim, Andreas-Antonios Roussakis, Antonio Martín-Bastida, Natalie Valle-Guzman, Gesine Paul, Eyal Soreq, Richard E Daws, Tom Foltynie, Roger A Barker and 2 more

Open access · goldAbstract read
In one paragraph

Article in NeuroImage. Clinical, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 13% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 39 citations in OpenAlex.

  1. Altered regional spontaneous brain activity in Parkinson's disease: a meta-analysis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Pooled it
  2. Article
  3. Article
  4. Effects of levodopa on motor and cerebellar network connectivity in Parkinson's disease.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
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  9. Review
  10. Why so slow? Models of parkinsonian bradykinesia.Nature reviews. Neuroscience · 2024
    Review
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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

12 authors at 6 institutions in 4 countries.

Weihua LiCentre for Neurodegeneration and Neuroinflammation, Division of Brain Sciences, Imperial College London, London W12 0NN, United Kingdom; Department of Radiology, Xuanwu Hospital, Capital Medical University, Beijing 100053, China. Electronic address: paola.piccini@imperial.ac.uk.
Nick P Lao-KaimCentre for Neurodegeneration and Neuroinflammation, Division of Brain Sciences, Imperial College London, London W12 0NN, United Kingdom.
Andreas-Antonios RoussakisCentre for Neurodegeneration and Neuroinflammation, Division of Brain Sciences, Imperial College London, London W12 0NN, United Kingdom.
Antonio Martín-BastidaCentre for Neurodegeneration and Neuroinflammation, Division of Brain Sciences, Imperial College London, London W12 0NN, United Kingdom; Department of Neurology and Neurosciences, Clínica universidad de Navarra, Pamplona-Madrid, Spain.
Natalie Valle-GuzmanJohn Van Geest Centre for Brain Repair, University of Cambridge, Cambridge CB2 0PY, United Kingdom.
Gesine PaulTranslational Neurology Group, Department of Clinical Sciences, Wallenberg Neuroscience Centre, Lund University, Lund 221 84, Sweden; Division of Neurology, Department of Clinical Sciences, Lund University, Skåne University Hospital, Lund 22185, Sweden.
Eyal SoreqImperial College London, Division of Brain Sciences, Computational Cognitive & Clinical Neuroimaging Lab (C(3)NL), London W12 0NN, United Kingdom.
Richard E DawsImperial College London, Division of Brain Sciences, Computational Cognitive & Clinical Neuroimaging Lab (C(3)NL), London W12 0NN, United Kingdom.
Tom FoltynieSobell Department of Motor Neuroscience, UCL Institute of Neurology, National Hospital for Neurology and Neurosurgery, London WC1N 3BG, United Kingdom.
Roger A BarkerJohn Van Geest Centre for Brain Repair, University of Cambridge, Cambridge CB2 0PY, United Kingdom.
Adam HampshireImperial College London, Division of Brain Sciences, Computational Cognitive & Clinical Neuroimaging Lab (C(3)NL), London W12 0NN, United Kingdom.
Paola PicciniCentre for Neurodegeneration and Neuroinflammation, Division of Brain Sciences, Imperial College London, London W12 0NN, United Kingdom.
Imperial College London · GBUniversity of Cambridge · GBCapital Medical University · CNNational Hospital for Neurology and Neurosurgery · GBSkåne University Hospital · SEWellcome Centre for Human Neuroimaging · GB

Funding

Department of Health
6 · The paper itself

Abstract

backgroundResting-state functional magnetic resonance imaging (fMRI) studies have demonstrated that basal ganglia functional connectivity is altered in Parkinson's disease (PD) as compared to healthy controls. However, such functional connectivity alterations have not been related to the dopaminergic deficits that occurs in PD over time.

objectivesTo examine whether functional connectivity impairments are correlated with dopaminergic deficits across basal ganglia subdivisions in patients with PD both cross-sectionally and longitudinally.

methodsWe assessed resting-state functional connectivity of basal ganglia subdivisions and dopamine transporter density using

resultsAt baseline, PD patients with greater dopaminergic deficits, as measured with

conclusionsOur findings suggest that basal ganglia functional connectivity is related to integrity of dopaminergic system in patients with PD. Application of resting-state fMRI in a large cohort and longitudinal scanning may be a powerful tool for assessing underlying PD pathology and its progression.

Indexed as

Motor DisordersParkinson DiseasePersons with DisabilitiesDopamineHumansMagnetic Resonance ImagingNeural PathwaysDopamine(11)C-PE2IDopamine transporterFunctional connectivityParkinson’s diseaseResting-state functional magnetic resonance imaging

Identifiers

PMID32916466
PMCPMC7490914
OpenAlexW3081623308

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.