World's Best Scientists 2026 revealed!
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Claire O'Callaghan

D-Index & Metrics

Neuroscience

D-Index
43
Citations
5715
World Ranking
7482
National Ranking
572

Claire O'Callaghan 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 Claire O'Callaghan 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: 105 publications — 20th percentile

20% of scientists in this discipline score the same or lower.

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

Claire O'Callaghan 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 Claire O'Callaghan 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: 43 D-Index — 24th percentile

24% of scientists in this discipline score the same or lower.

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

Overview

Claire O'Callaghan is affiliated with the University of Cambridge in the United Kingdom. Their research spans key areas of medicine and neuroscience, with particular focus on neurological disorders and treatments, Parkinson's disease mechanisms and treatments, and functional brain connectivity studies.

The primary fields of study for Claire O'Callaghan include Medicine and Neuroscience, with subfields that cover Neurology, Cognitive Neuroscience, Cellular and Molecular Neuroscience, Radiology, Nuclear Medicine and Imaging, as well as Psychiatry and Mental Health.

Main topics of their work include:

  • Neurological disorders and treatments
  • Parkinson's Disease Mechanisms and Treatments
  • Functional Brain Connectivity Studies
  • Neuroscience and Neuropharmacology Research
  • Neural dynamics and brain function
  • Advanced Neuroimaging Techniques and Applications
  • Genetic Neurodegenerative Diseases

Frequent co-authors in their body of work are:

  • James B. Rowe
  • Frank H. Hezemans
  • Luca Passamonti
  • James M. Shine
  • Trevor W. Robbins

Regular publication venues for Claire O'Callaghan include:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Brain
  • Movement Disorders
  • Brain Communications
  • Neuroscience & Biobehavioral Reviews

Some of their recent papers are:

  • Biological and clinical characteristics of gene carriers far from predicted onset in the Huntington's disease Young Adult Study (HD-YAS): a cross-sectional analysis, 2020, The Lancet Neurology
  • Visual hallucinations in neurological and ophthalmological disease: pathophysiology and management, 2020, Journal of Neurology Neurosurgery & Psychiatry
  • GABA and glutamate deficits from frontotemporal lobar degeneration are associated with disinhibition, 2020, Brain
  • Locus coeruleus integrity and the effect of atomoxetine on response inhibition in Parkinson's disease, 2021, Brain
  • An in vivo probabilistic atlas of the human locus coeruleus at ultra-high field, 2020, NeuroImage

Best Publications

  • The major impact of freezing of gait on quality of life in Parkinson’s disease

    Courtney C. Walton;James M. Shine;Julie M. Hall;Claire O’Callaghan

  • Tricks of the mind: Visual hallucinations as disorders of attention.

    James M. Shine;Claire O’Callaghan;Claire O’Callaghan;Glenda M. Halliday;Simon J.G. Lewis

  • Biological and clinical characteristics of gene carriers far from predicted onset in the Huntington's disease Young Adult Study (HD-YAS): a cross-sectional analysis.

    Rachael I Scahill;Paul Zeun;Katherine Osborne-Crowley;Katherine Osborne-Crowley;Eileanoir B Johnson

  • Cerebellar atrophy in neurodegeneration-a meta-analysis.

    Helena M Gellersen;Christine C Guo;Claire O’Callaghan;Rachel H Tan

  • Predictions penetrate perception: Converging insights from brain, behaviour and disorder

    Claire O’Callaghan;Claire O’Callaghan;Kestutis Kveraga;James M. Shine;Reginald B. Adams

  • Beyond and below the cortex: the contribution of striatal dysfunction to cognition and behaviour in neurodegeneration

    Claire O'Callaghan;Maxime Bertoux;Michael Hornberger;Michael Hornberger

  • Cerebellar atrophy in Parkinson’s disease and its implication for network connectivity

    Claire O’Callaghan;Claire O’Callaghan;Michael Hornberger;Joshua H. Balsters;Glenda M. Halliday;Glenda M. Halliday

  • Imagine that: elevated sensory strength of mental imagery in individuals with Parkinson's disease and visual hallucinations

    James M. Shine;Rebecca Keogh;Claire O'Callaghan;Alana J. Muller

  • Sensitivity and specificity of ventromedial prefrontal cortex tests in behavioral variant frontotemporal dementia

    Maxime Bertoux;Aurélie Funkiewiez;Claire O'Callaghan;Claire O'Callaghan;Bruno Dubois

  • Visual hallucinations in neurological and ophthalmological disease: Pathophysiology and management

    John O'Brien;John Paul Taylor;Clive Ballard;Roger A Barker

  • Abnormal connectivity between the default mode and the visual system underlies the manifestation of visual hallucinations in Parkinson's disease: a task-based fMRI study.

    James M. Shine;Alana J. Muller;Claire O’Callaghan;Claire O’Callaghan;Michael Hornberger

  • An in vivo probabilistic atlas of the human locus coeruleus at ultra-high field

    Rong Ye;Catarina Rua;Claire O'Callaghan;P. Simon Jones

  • GABA and glutamate deficits from frontotemporal lobar degeneration are associated with disinhibition.

    Alexander G Murley;Alexander G Murley;Matthew A Rouse;P Simon Jones;Rong Ye

  • Fair play: social norm compliance failures in behavioural variant frontotemporal dementia.

    Claire O’Callaghan;Claire O’Callaghan;Maxime Bertoux;Muireann Irish;Muireann Irish;James M. Shine;James M. Shine

  • Shaped by our thoughts - A new task to assess spontaneous cognition and its associated neural correlates in the default network

    Claire O’Callaghan;James M. Shine;Simon J.G. Lewis;Jessica R. Andrews-Hanna

  • Cognition in Parkinson's Disease.

    Claire O'Callaghan;Claire O'Callaghan;Simon J G Lewis

  • Dopaminergic basis for impairments in functional connectivity across subdivisions of the striatum in Parkinson's disease.

    Peter T. Bell;Peter T. Bell;Moran Gilat;Claire O'Callaghan;Claire O'Callaghan;David A. Copland

  • Locus coeruleus integrity and the effect of atomoxetine on response inhibition in Parkinson's disease.

    Claire O'Callaghan;Claire O'Callaghan;Frank H Hezemans;Frank H Hezemans;Rong Ye;Catarina Rua

  • Hippocampal atrophy and intrinsic brain network dysfunction relate to alterations in mind wandering in neurodegeneration.

    Claire O'Callaghan;Claire O'Callaghan;James M Shine;John R Hodges;John R Hodges;Jessica R Andrews-Hanna

  • Diffusion alterations associated with Parkinson's disease symptomatology: A review of the literature

    Julie M. Hall;Kaylena A. Ehgoetz Martens;Courtney C. Walton;Claire O'Callaghan;Claire O'Callaghan

  • Cognitive training for freezing of gait in Parkinson’s disease: a randomized controlled trial

    Courtney C. Walton;Loren Mowszowski;Moran Gilat;Julie M. Hall

  • Fronto-striatal atrophy correlates of inhibitory dysfunction in Parkinson's disease versus behavioural variant frontotemporal dementia.

    Claire O'Callaghan;Claire O'Callaghan;Sharon L. Naismith;John R. Hodges;John R. Hodges;Simon J.G. Lewis

  • Social Cognition Deficits: The Key to Discriminate Behavioral Variant Frontotemporal Dementia from Alzheimer's Disease Regardless of Amnesia?

    Maxime Bertoux;Maxime Bertoux;Leonardo Cruz de Souza;Claire O’Callaghan;Andrea Greve

Frequent Co-Authors

James M. Shine
James M. Shine University of Sydney
Michael Hornberger
Michael Hornberger University of East Anglia
Simon J.G. Lewis
Simon J.G. Lewis Macquarie University
John R. Hodges
John R. Hodges University of Sydney
Muireann Irish
Muireann Irish University of Sydney
James B. Rowe
James B. Rowe University of Cambridge
Trevor W. Robbins
Trevor W. Robbins University of Cambridge
Glenda M. Halliday
Glenda M. Halliday University of Sydney
Sharon L. Naismith
Sharon L. Naismith University of Sydney
Courtney C. Walton
Courtney C. Walton University of Melbourne

External Links

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Best Scientists Citing Claire O'Callaghan

John R. Hodges

John R. Hodges

University of Sydney

Publications: 47

Muireann Irish

Muireann Irish

University of Sydney

Publications: 47

Olivier Piguet

Olivier Piguet

University of Sydney

Publications: 45

Simon J.G. Lewis

Simon J.G. Lewis

Macquarie University

Publications: 44

James B. Rowe

James B. Rowe

University of Cambridge

Publications: 33

Adolfo M. García

Adolfo M. García

University of San Andrés

Publications: 26

John-Paul Taylor

John-Paul Taylor

Newcastle University

Publications: 22

James M. Shine

James M. Shine

University of Sydney

Publications: 21

Michael Hornberger

Michael Hornberger

University of East Anglia

Publications: 20

Glenda M. Halliday

Glenda M. Halliday

University of Sydney

Publications: 19

Fiona Kumfor

Fiona Kumfor

University of Sydney

Publications: 18

Agustín Ibáñez

Agustín Ibáñez

Adolfo Ibáñez University

Publications: 18

Alice Nieuwboer

Alice Nieuwboer

KU Leuven

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Fay B. Horak

Oregon Health & Science University

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