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Sean S. O'Sullivan

Sean S. O'Sullivan

Cork University Hospital
Ireland

D-Index & Metrics

Neuroscience

D-Index
47
Citations
13755
World Ranking
6307
National Ranking
27

Sean S. O'Sullivan publication distribution in Neuroscience in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Neuroscience in 2026. The highlighted bar marks where Sean S. O'Sullivan sits on this spectrum.

38–47 publications: 18 scientists 48–57 publications: 79 scientists 58–67 publications: 193 scientists 68–77 publications: 323 scientists 78–87 publications: 406 scientists 88–97 publications: 452 scientists 98–107 publications: 539 scientists 108–117 publications: 505 scientists 118–127 publications: 522 scientists 128–137 publications: 469 scientists 138–147 publications: 456 scientists 148–157 publications: 459 scientists 158–167 publications: 397 scientists 168–177 publications: 383 scientists 178–187 publications: 350 scientists 188–197 publications: 302 scientists 198–207 publications: 306 scientists 208–217 publications: 262 scientists 218–227 publications: 242 scientists 228–237 publications: 220 scientists 238–247 publications: 203 scientists 248–257 publications: 174 scientists 258–267 publications: 176 scientists 268–277 publications: 175 scientists 278–287 publications: 125 scientists 288–297 publications: 116 scientists 298–307 publications: 127 scientists 308–317 publications: 128 scientists 318–327 publications: 99 scientists 328–337 publications: 89 scientists 338–347 publications: 78 scientists 348–357 publications: 96 scientists 358–367 publications: 66 scientists 368–377 publications: 59 scientists 378–387 publications: 65 scientists 388–397 publications: 54 scientists 398–407 publications: 48 scientists 408–417 publications: 49 scientists 418–427 publications: 34 scientists 428–437 publications: 31 scientists 438–447 publications: 30 scientists 448–457 publications: 31 scientists 458–467 publications: 36 scientists 468–477 publications: 40 scientists 478–487 publications: 35 scientists 488–497 publications: 30 scientists 498–507 publications: 23 scientists 508–517 publications: 26 scientists 518–527 publications: 20 scientists 528–537 publications: 23 scientists 538–547 publications: 20 scientists 548–557 publications: 20 scientists 558–567 publications: 17 scientists 568–577 publications: 14 scientists 578–587 publications: 20 scientists 588–597 publications: 20 scientists 598–607 publications: 19 scientists 608–617 publications: 18 scientists 618–627 publications: 17 scientists 628–637 publications: 11 scientists 638–647 publications: 11 scientists 648–657 publications: 11 scientists 658–667 publications: 8 scientists 668–677 publications: 7 scientists 678–687 publications: 11 scientists 688–697 publications: 10 scientists 698–707 publications: 4 scientists 708–717 publications: 6 scientists 718–727 publications: 5 scientists 728–737 publications: 5 scientists 738–747 publications: 9 scientists 748–757 publications: 9 scientists 758–767 publications: 3 scientists 768–777 publications: 7 scientists 778–787 publications: 7 scientists 788–797 publications: 6 scientists 798–807 publications: 2 scientists 808–817 publications: 2 scientists 818–827 publications: 7 scientists 828–837 publications: 0 scientists 838–847 publications: 9 scientists 848–857 publications: 3 scientists 858–867 publications: 1 scientists 868–877 publications: 3 scientists 878–886 publications: 6 scientists 887+ publications: 100 scientists
38 publications 887+

This scientist: 154 publications — 45th percentile

45% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 887 publications or more.

Sean S. O'Sullivan D-index placement in Neuroscience in 2026

The chart shows the D-index (discipline H-index) distribution of Neuroscience scientists ranked by Research.com in 2026. The highlighted bar marks where Sean S. O'Sullivan sits on this spectrum.

30–31 D-Index: 42 scientists 32–33 D-Index: 172 scientists 34–35 D-Index: 296 scientists 36–37 D-Index: 435 scientists 38–39 D-Index: 459 scientists 40–41 D-Index: 456 scientists 42–43 D-Index: 467 scientists 44–45 D-Index: 478 scientists 46–47 D-Index: 512 scientists 48–49 D-Index: 435 scientists 50–51 D-Index: 425 scientists 52–53 D-Index: 418 scientists 54–55 D-Index: 392 scientists 56–57 D-Index: 357 scientists 58–59 D-Index: 334 scientists 60–61 D-Index: 328 scientists 62–63 D-Index: 260 scientists 64–65 D-Index: 278 scientists 66–67 D-Index: 239 scientists 68–69 D-Index: 250 scientists 70–71 D-Index: 210 scientists 72–73 D-Index: 200 scientists 74–75 D-Index: 189 scientists 76–77 D-Index: 170 scientists 78–79 D-Index: 146 scientists 80–81 D-Index: 113 scientists 82–83 D-Index: 126 scientists 84–85 D-Index: 100 scientists 86–87 D-Index: 84 scientists 88–89 D-Index: 99 scientists 90–91 D-Index: 84 scientists 92–93 D-Index: 85 scientists 94–95 D-Index: 72 scientists 96–97 D-Index: 76 scientists 98–99 D-Index: 45 scientists 100–101 D-Index: 49 scientists 102–103 D-Index: 43 scientists 104–105 D-Index: 32 scientists 106–107 D-Index: 45 scientists 108–109 D-Index: 50 scientists 110–111 D-Index: 32 scientists 112–113 D-Index: 39 scientists 114–115 D-Index: 32 scientists 116–117 D-Index: 29 scientists 118–119 D-Index: 27 scientists 120–121 D-Index: 19 scientists 122–123 D-Index: 23 scientists 124–125 D-Index: 27 scientists 126–127 D-Index: 16 scientists 128–129 D-Index: 24 scientists 130–131 D-Index: 13 scientists 132–133 D-Index: 21 scientists 134–135 D-Index: 17 scientists 136–137 D-Index: 14 scientists 138–139 D-Index: 15 scientists 140–141 D-Index: 10 scientists 142–143 D-Index: 10 scientists 144–145 D-Index: 13 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 8 scientists 150–151 D-Index: 6 scientists 152–153 D-Index: 6 scientists 154–155 D-Index: 7 scientists 156–157 D-Index: 7 scientists 158–159 D-Index: 10 scientists 160–161 D-Index: 4 scientists 162 D-Index: 8 scientists 163+ D-Index: 100 scientists
30 D-Index 163+

This scientist: 47 D-Index — 35th percentile

35% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 163 D-Index or more.

Overview

Sean S. O'Sullivan is affiliated with Cork University Hospital in Ireland and has a research focus predominantly within the field of Medicine, with a specialization in Neurology. Their work spans multiple subfields including Clinical Psychology, Sociology and Political Science, General Health Professions, and Psychiatry and Mental Health.

Their research topics cover a range of neurological and psychological conditions and treatments, involving:

  • Parkinson's Disease Mechanisms and Treatments
  • Neurological disorders and treatments
  • Botulinum Toxin and Related Neurological Disorders
  • Obsessive-Compulsive Spectrum Disorders
  • Misinformation and Its Impacts
  • Health Literacy and Information Accessibility
  • Epilepsy research and treatment

Sean S. O'Sullivan has contributed to several publications in peer-reviewed venues, including:

  • "The "round the houses" sign and "zig-zag" sign in progressive supranuclear palsy and other conditions," 2020, Parkinsonism & Related Disorders
  • "Neuropsychiatric Features of Punding and Hobbyism in Parkinson's Disease," 2021, Movement Disorders Clinical Practice
  • "Neurology patient engagement with online health-related resources," 2020, Journal of the Neurological Sciences
  • "Very low amplitude muscle activity increases probability of motor evoked potentials in healthy individuals and in ALS," 2025, bioRxiv (Cold Spring Harbor Laboratory)

The researcher frequently collaborates with co-authors such as Olwen C. Murphy, Daniel R. Gold, Conor Fearon, Robert H. Field, and Eoghan Donlon, contributing jointly to investigations in their shared fields of interest.

Sean S. O'Sullivan's research findings have been published in journals with a focus on neurology and clinical practice including Parkinsonism & Related Disorders, Movement Disorders Clinical Practice, Journal of the Neurological Sciences, and bioRxiv from Cold Spring Harbor Laboratory.

Best Publications

  • Phenotype, genotype, and worldwide genetic penetrance of LRRK2-associated Parkinson's disease: a case-control study

    Daniel G Healy;Mario Falchi;Sean S O'Sullivan;Vincenzo Bonifati

  • Glucocerebrosidase mutations in clinical and pathologically proven Parkinson's disease

    Juliane Neumann;Jose Bras;Jose Bras;Emma Deas;Sean S. O'Sullivan

  • Identification of common variants influencing risk of the tauopathy progressive supranuclear palsy

    Günter U. Höglinger;Nadine M. Melhem;Dennis W. Dickson;Patrick M A Sleiman

  • Lewy- and Alzheimer-type pathologies in Parkinson's disease dementia: which is more important?

    Yaroslau Compta;Laura Parkkinen;Sean S O'Sullivan;Jana Vandrovcova

  • Relationships between age and late progression of Parkinson’s disease: a clinico-pathological study

    Peter A Kempster;Sean S O'Sullivan;Janice L Holton;Tamas Revesz

  • Clinical outcomes of progressive supranuclear palsy and multiple system atrophy

    Sean S O'Sullivan;Luke A Massey;David R Williams;Laura Silveira-Moriyama

  • Excessive burden of lysosomal storage disorder gene variants in Parkinson's disease

    L.A. Robak;L.A. Robak;I.E. Jansen;I.E. Jansen;J van Rooij;A.G. Uitterlinden

  • Loss of VPS13C Function in Autosomal-Recessive Parkinsonism Causes Mitochondrial Dysfunction and Increases PINK1/Parkin-Dependent Mitophagy.

    Suzanne Lesage;Valérie Drouet;Elisa Majounie;Vincent Deramecourt

  • Does corticobasal degeneration exist? A clinicopathological re-evaluation

    Helen Ling;Sean S O'Sullivan;Janice L Holton;Tamas Revesz

  • Nonmotor symptoms as presenting complaints in Parkinson's disease: a clinicopathological study.

    Sean S O'Sullivan;David R Williams;David R Williams;David A Gallagher;Luke A Massey

  • Unbiased screen for interactors of leucine-rich repeat kinase 2 supports a common pathway for sporadic and familial Parkinson disease

    A. Beilina;I. N. Rudenko;A. Kaganovich;L. Civiero

  • A Two-Stage Meta-Analysis Identifies Several New Loci for Parkinson's Disease

    V. Plagnol;M.A. Nalls;J.M. Bras;D.G. Hernandez;D.G. Hernandez

  • Dopamine dysregulation syndrome: an overview of its epidemiology, mechanisms and management.

    Sean S. O’Sullivan;Andrew H. Evans;Andrew J. Lees

  • Maladaptive plasticity of serotonin axon terminals in levodopa-induced dyskinesia.

    Daniella Rylander;Martin Parent;Sean S. O'Sullivan;Sandra Dovero

  • Cue-induced striatal dopamine release in Parkinson's disease-associated impulsive-compulsive behaviours

    Sean S. O'Sullivan;Sean S. O'Sullivan;Kit Wu;Marios Politis;Andrew David Lawrence

  • Dopamine dysregulation syndrome, impulse control disorders and punding after deep brain stimulation surgery for Parkinson's disease

    Shen-Yang Lim;Sean S. O'Sullivan;Katya Kotschet;David A. Gallagher

  • Degeneration in Different Parkinsonian Syndromes Relates to Astrocyte Type and Astrocyte Protein Expression

    Yun Ju C Song;Glenda M Halliday;Janice L Holton;Tammaryn Lashley

  • Conventional magnetic resonance imaging in confirmed progressive supranuclear palsy and multiple system atrophy

    Luke A. Massey;Caroline Micallef;Dominic C. Paviour;Sean S. O'Sullivan

  • The midbrain to pons ratio A simple and specific MRI sign of progressive supranuclear palsy

    Luke A. Massey;Hans R. Jäger;Dominic C. Paviour;Sean S. O’Sullivan

  • Trial of CBT for impulse control behaviors affecting Parkinson patients and their caregivers

    David Okai;Sally Askey-Jones;Michael Samuel;Sean S. O’Sullivan

  • Intact Reward Learning but Elevated Delay Discounting in Parkinson's Disease Patients With Impulsive-Compulsive Spectrum Behaviors

    Charlotte R Housden;Sean S O'Sullivan;Eileen M Joyce;Andrew J Lees

  • Cortical alpha-synuclein load is associated with amyloid-beta plaque burden in a subset of Parkinson's disease patients.

    Tammaryn Lashley;Janice L. Holton;Emma Gray;Konrad Kirkham

  • Neural response to visual sexual cues in dopamine treatment-linked hypersexuality in Parkinson’s disease

    Marios Politis;Clare Loane;Kit Wu;Sean S. O'Sullivan

  • Vascular endothelial growth factor is upregulated by L-dopa in the parkinsonian brain: implications for the development of dyskinesia.

    K. Elisabet Ohlin;Veronica Francardo;Hanna S. Lindgren;Stephanie E. Sillivan

  • Testing an aetiological model of visual hallucinations in Parkinson's disease

    David A. Gallagher;Laura Parkkinen;Sean S. O'Sullivan;Alexander Spratt

  • CLINICAL OUTCOMES OF PROGRESSIVE SUPRANUCLEAR PALSY AND MULTIPLE SYSTEM ATROPHY

    SS O'Sullivan;LA Massey;Williams;L Silveira-Moriyama

Frequent Co-Authors

Andrew J. Lees
Andrew J. Lees University College London
Tamas Revesz
Tamas Revesz University College London
Janice L. Holton
Janice L. Holton University College London
Bruno B. Averbeck
Bruno B. Averbeck National Institutes of Health
Andrew D. Lawrence
Andrew D. Lawrence Cardiff University
Marios Politis
Marios Politis King's College London
Andrew Evans
Andrew Evans University of Dundee
Thomas Foltynie
Thomas Foltynie University College London
Patricia Limousin
Patricia Limousin University College London
David J. Burn
David J. Burn Newcastle University

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Related Online Degrees & Career Pathways

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Exploring these online options can help you tailor your education to your career goals, whether in neuroscience or related allied fields.

Best Scientists Citing Sean S. O'Sullivan

Glenda M. Halliday

Glenda M. Halliday

University of Sydney

Publications: 125

Günter U. Höglinger

Günter U. Höglinger

Ludwig Maximilian University of Munich

Publications: 106

Thomas Gasser

Thomas Gasser

University of Tübingen

Publications: 93

John Hardy

John Hardy

University College London

Publications: 87

Andrew J. Lees

Andrew J. Lees

University College London

Publications: 86

Dennis W. Dickson

Dennis W. Dickson

Mayo Clinic

Publications: 86

Daniela Berg

Daniela Berg

University Hospital Schleswig-Holstein

Publications: 80

Andrew B. Singleton

Andrew B. Singleton

National Institutes of Health

Publications: 75

Mark R. Cookson

Mark R. Cookson

National Institutes of Health

Publications: 71

Anthony H.V. Schapira

Anthony H.V. Schapira

University College London

Publications: 69

Ziv Gan-Or

Ziv Gan-Or

McGill University

Publications: 69

Anthony E. Lang

Anthony E. Lang

University of Toronto

Publications: 68

Owen A. Ross

Owen A. Ross

Mayo Clinic

Publications: 65

Alexis Brice

Alexis Brice

Institut du Cerveau

Publications: 64

Janice L. Holton

Janice L. Holton

University College London

Publications: 62

Daniel Weintraub

Daniel Weintraub

University of Pennsylvania

Publications: 61

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