Evidence map›Paper›PMID 29982424›Full record

ArticleBrain : a journal of neurology2018

Localizing parkinsonism based on focal brain lesions.

Juho Joutsa, Andreas Horn, Joey Hsu, Michael D Fox

Open access · bronzeAbstract read
In one paragraph

Article in Brain : a journal of neurology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 98 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
98citing papers in PubMed, 7 pooled it
11.2field-weighted citation impact, top 1% 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

98 citing papers in PubMed, 7 syntheses or guidelines pooled it, 156 citations in OpenAlex.

  1. Pooled it
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  5. A depression network caused by brain tumours.Brain structure & function · 2022
    Pooled it
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  8. Trial
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  14. Monoaminergic Networks of Cognitive and Behavioral Symptoms in Early Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2026
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  15. Network Localization of Fatigue in Multiple Sclerosis.Annals of clinical and translational neurology · 2026
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  16. Brain network localization of anhedonia.Translational psychiatry · 2026
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  17. Specific Glutamatergic Projection to Claustrum for Regulating Methamphetamine Abstinence Anxiety-Like Behaviors.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
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  18. Mapping the Neuroanatomy of Dystonia Using Causal Brain Lesions.medRxiv : the preprint server for health sciences · 2025
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  19. Article
  20. Article

38 more citing papers are in PubMed but not listed here.

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 4 institutions in 3 countries.

Juho JoutsaAthinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USA.
Andreas HornDepartment of Neurology, Movement Disorders and Neuromodulation Unit, Charité - Universitätsmedizin, Berlin, Germany.
Joey HsuBerenson-Allen Center for Noninvasive Brain Stimulation, Beth Israel Deaconess Medical Center, Boston, MA, USA.
Michael D FoxAthinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USA.
Athinoula A. Martinos Center for Biomedical Imaging · USCharité - Universitätsmedizin Berlin · DEHarvard University · USUniversity of Turku · FI

Funding

Using human brain connectivity to identify the causal neuroanatomical substrate of depression symptomsR01MH113929 · NIMH · BRIGHAM AND WOMEN'S HOSPITAL · PI MICHAEL D FOX · 2017 to 2026
$6.9M
A Storage Area Network for Structural and Functional Image AnalysisS10RR023401 · NCRR · MASSACHUSETTS GENERAL HOSPITAL · PI FISCHL, BRUCE · 2009 to 2009
$2.0M
SILICON GRAPHICS PRISM EXTREME 128P/1TBS10RR023043 · NCRR · MASSACHUSETTS GENERAL HOSPITAL · PI SORENSEN, ALMA GREGORY · 2006 to 2006
$1.5M
Use of Resting-State Networks to Predict the Ideal Site for Brain StimulationK23NS083741 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI FOX, MICHAEL D · 2013 to 2017
$980k
NCRR NIH HHS S10 RR023043NCRR NIH HHS S10 RR023401NIMH NIH HHS R01 MH113929NINDS NIH HHS K23 NS083741
6 · The paper itself

Abstract

Bradykinesia, rigidity, and tremor frequently co-occur, a clinical syndrome known as parkinsonism. Because this syndrome is commonly seen in Parkinson's disease, symptoms are often attributed to cell loss in the substantia nigra. However, parkinsonism occurs in several other neurological disorders and often fails to correlate with nigrostriatal pathology, raising the question of which brain region(s) cause this syndrome. Here, we studied cases of new-onset parkinsonism following focal brain lesions. We identified 29 cases, only 31% of which hit the substantia nigra. Lesions were located in a variety of different cortical and subcortical locations. To determine whether these heterogeneous lesion locations were part of a common brain network, we leveraged the human brain connectome and a recently validated technique termed lesion network mapping. Lesion locations causing parkinsonism were functionally connected to a common network of regions including the midbrain, basal ganglia, cingulate cortex, and cerebellum. The most sensitive and specific connectivity was to the claustrum. This lesion connectivity pattern matched atrophy patterns seen in Parkinson's disease, progressive supranuclear palsy, and multiple system atrophy, suggesting a shared neuroanatomical substrate for parkinsonism. Lesion connectivity also predicted medication response and matched the pattern of effective deep brain stimulation, suggesting relevance as a treatment target. Our results, based on causal brain lesions, lend insight into the localization of parkinsonism, one of the most common syndromes in neurology. Because many patients with parkinsonism fail to respond to dopaminergic medication, these results may aid the development of alternative treatments.10.1093/brain/awy161_video1awy161media15815555971001.

Indexed as

AdultAgedAged, 80 and overBasal GangliaBrainCerebellumConnectomeFemaleGyrus CinguliHumansMaleMiddle AgedMultiple System AtrophyParkinson DiseaseParkinsonian DisordersSubstantia Nigra

Identifiers

PMID29982424
PMCPMC6061866
OpenAlexW2811441774

What OpenQuestion holds

Textmetadata
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.