World's Best Scientists 2026 revealed!
Sean S. O'Sullivan

Sean S. O'Sullivan

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Neuroscience 47 6307 5803 27 26 154 13755

Sean S. O'Sullivan publications per year

The chart shows the history of publications by Sean S. O'Sullivan between 1998 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Sean S. O'Sullivan published across 28 years, from 1998 to 2025, averaging 5.9 papers a year. Output peaked at 23 publications in 2011. 1 of the 164 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1998 to 2025. Vertical axis: number of publications, 0 to 23. Peak 23 publications in 2011. 1998: 1 publication 1999: 0 publications 2000: 0 publications 2001: 0 publications 2002: 0 publications 2003: 0 publications 2004: 0 publications 2005: 1 publication 2006: 7 publications 2007: 13 publications 2008: 11 publications 2009: 17 publications 2010: 22 publications 2011: 23 publications 2012: 9 publications 2013: 12 publications 2014: 10 publications 2015: 9 publications 2016: 11 publications 2017: 8 publications 2018: 2 publications 2019: 3 publications 2020: 1 publication 2021: 3 publications 2022: 0 publications 2023: 0 publications 2024: 0 publications 2025: 1 publication
1998 2025

164 publications in total across all disciplines

View publications per year as a table
Sean S. O'Sullivan: publications per year, 1998 to 2025
Year Publications
1998 1
1999 0
2000 0
2001 0
2002 0
2003 0
2004 0
2005 1
2006 7
2007 13
2008 11
2009 17
2010 22
2011 23
2012 9
2013 12
2014 10
2015 9
2016 11
2017 8
2018 2
2019 3
2020 1
2021 3
2022 0
2023 0
2024 0
2025 1
Total 164
Download as CSV

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.

No. of scientists
100 200 300 400 500
Bar chart with 86 bars. Horizontal axis: publications, 38–47 to 887+. Vertical axis: number of scientists, 0 to 539. Most scientists, 539, have 98–107 publications. The last bar groups every scientist with 887 publications or more. The highlighted bar, 148–157 publications, is where this scientist sits. 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 scientist 868–877 publications: 3 scientists 878–886 publications: 6 scientists 887+ publications: 100 scientists
38–47 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.

View publications distribution as a table
Number of Neuroscience scientists by publication count, Research.com 2026 ranking edition. Based on 9,597 ranked scientists.
Publications Scientists This scientist
38–47 18
48–57 79
58–67 193
68–77 323
78–87 406
88–97 452
98–107 539
108–117 505
118–127 522
128–137 469
138–147 456
148–157 459 154
158–167 397
168–177 383
178–187 350
188–197 302
198–207 306
208–217 262
218–227 242
228–237 220
238–247 203
248–257 174
258–267 176
268–277 175
278–287 125
288–297 116
298–307 127
308–317 128
318–327 99
328–337 89
338–347 78
348–357 96
358–367 66
368–377 59
378–387 65
388–397 54
398–407 48
408–417 49
418–427 34
428–437 31
438–447 30
448–457 31
458–467 36
468–477 40
478–487 35
488–497 30
498–507 23
508–517 26
518–527 20
528–537 23
538–547 20
548–557 20
558–567 17
568–577 14
578–587 20
588–597 20
598–607 19
608–617 18
618–627 17
628–637 11
638–647 11
648–657 11
658–667 8
668–677 7
678–687 11
688–697 10
698–707 4
708–717 6
718–727 5
728–737 5
738–747 9
748–757 9
758–767 3
768–777 7
778–787 7
788–797 6
798–807 2
808–817 2
818–827 7
828–837 0
838–847 9
848–857 3
858–867 1
868–877 3
878–886 6
887+ 100
Download as CSV

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.

No. of scientists
100 200 300 400 500
Bar chart with 68 bars. Horizontal axis: D-Index, 30–31 to 163+. Vertical axis: number of scientists, 0 to 512. Most scientists, 512, have 46–47 D-Index. The last bar groups every scientist with 163 D-Index or more. The highlighted bar, 46–47 D-Index, is where this scientist sits. 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
30–31 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.

View D-Index distribution as a table
Number of Neuroscience scientists by D-index, Research.com 2026 ranking edition. Based on 9,597 ranked scientists.
D-Index Scientists This scientist
30–31 42
32–33 172
34–35 296
36–37 435
38–39 459
40–41 456
42–43 467
44–45 478
46–47 512 47
48–49 435
50–51 425
52–53 418
54–55 392
56–57 357
58–59 334
60–61 328
62–63 260
64–65 278
66–67 239
68–69 250
70–71 210
72–73 200
74–75 189
76–77 170
78–79 146
80–81 113
82–83 126
84–85 100
86–87 84
88–89 99
90–91 84
92–93 85
94–95 72
96–97 76
98–99 45
100–101 49
102–103 43
104–105 32
106–107 45
108–109 50
110–111 32
112–113 39
114–115 32
116–117 29
118–119 27
120–121 19
122–123 23
124–125 27
126–127 16
128–129 24
130–131 13
132–133 21
134–135 17
136–137 14
138–139 15
140–141 10
142–143 10
144–145 13
146–147 9
148–149 8
150–151 6
152–153 6
154–155 7
156–157 7
158–159 10
160–161 4
162 8
163+ 100
Download as CSV

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

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For students interested in neuroscience, a wide range of related online degrees and flexible learning options are available. Many learners choose to expand their expertise or pivot into fields like psychology, social work, or mental health counseling—all of which pair well with neuroscience training.

Accelerated programs offer a faster route to a professional career. For those considering social work, accelerated online msw programs can allow you to complete your degree and enter the workforce quickly. Similarly, a fast track psychology degree offers streamlined, flexible learning to launch your career in psychology and related fields.

Specialized counseling degrees are also a strong option. The university of the cumberlands school counseling program is known for its affordability and flexibility, making it a top choice for aspiring counselors. If you’re drawn to clinical settings, consider advancing with an online clinical mental health counseling degree.

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

Trending Scientists