World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
136
Citations
71046
World Ranking
1973
National Ranking
205

Neuroscience

D-Index
135
Citations
70059
World Ranking
233
National Ranking
31

Roger A. Barker 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 Roger A. Barker 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: 804 publications — 99th percentile

99% of scientists in this discipline score the same or lower.

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

Roger A. Barker 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 Roger A. Barker 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: 135 D-Index — 98th percentile

98% of scientists in this discipline score the same or lower.

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

Overview

Roger A. Barker is affiliated with the University of Cambridge in the United Kingdom. Their research spans multiple disciplines within biomedical sciences, focusing notably on medicine, biochemistry, genetics, molecular biology, and neuroscience.

The scientist's publication record demonstrates significant engagement in neurology and molecular biology, with a considerable number of works contributing to cellular and molecular neuroscience, cognitive neuroscience, and physiology.

Research topics covered by Barker include Parkinson's disease mechanisms and treatments, neurological disorders and treatments, genetic neurodegenerative diseases, pluripotent stem cells, single-cell and spatial transcriptomics, mitochondrial function and pathology, as well as autism spectrum disorder research.

Frequent collaborators include Caroline H. Williams-Gray, Xiaoling He, Omer Ali Bayraktar, Sarah A. Teichmann, and Thomas Foltynie.

Typical venues for their research publications are:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Movement Disorders
  • Journal of Parkinson s Disease
  • Journal of Neurology
  • Nature

Notable recent papers include:

  • A cell atlas of human thymic development defines T cell repertoire formation, 2020, Science
  • Cells of the human intestinal tract mapped across space and time, 2021, Nature
  • ISSCR Guidelines for Stem Cell Research and Clinical Translation: The 2021 update, 2021, Stem Cell Reports
  • Comprehensive cell atlas of the first-trimester developing human brain, 2023, Science
  • Diagnostic criteria for mild cognitive impairment in Parkinson's disease: Movement Disorder Society Task Force guidelines, 2020, UNC Libraries

Barker's scholarly contributions include extensive work on Parkinson's disease mechanisms and treatments, reflecting a specialized commitment to understanding this condition alongside broader interests in neurological disorders.

Their multidisciplinary approach integrates cellular and molecular methods with clinical neuroscience, supporting developments in genetic neurodegenerative disease research as well as stem cell biology and transcriptomics.

This breadth of focus aligns with publication trends evident in highly regarded scientific journals, which serve as platforms for disseminating research findings across medical and molecular biology communities.

Best Publications

  • RNA velocity of single cells

    Gioele La Manno;Gioele La Manno;Ruslan Soldatov;Amit Zeisel;Amit Zeisel;Emelie Braun;Emelie Braun

  • Diagnostic Criteria for Mild Cognitive Impairment in Parkinson’s Disease: Movement Disorder Society Task Force Guidelines

    Irene Litvan;Jennifer G. Goldman;Alexander I. Tröster;Ben A. Schmand

  • A Functional Role for Adult Hippocampal Neurogenesis in Spatial Pattern Separation

    C. D. Clelland;M. Choi;C. Romberg;G. D. Clemenson

  • Evolution of cognitive dysfunction in an incident Parkinson's disease cohort

    C. H. Williams-Gray;T. Foltynie;C. E. G. Brayne;T. W. Robbins

  • The distinct cognitive syndromes of Parkinson's disease: 5 year follow-up of the CamPaIGN cohort

    Caroline H. Williams-Gray;Jonathan R. Evans;An Goris;An Goris;Thomas Foltynie

  • Enhanced or Impaired Cognitive Function in Parkinson's Disease as a Function of Dopaminergic Medication and Task Demands

    Roshan Cools;Roger A. Barker;Barbara J. Sahakian;Trevor W. Robbins

  • Neuropsychological and clinical heterogeneity of cognitive impairment and dementia in patients with Parkinson's disease

    Angie A Kehagia;Roger A Barker;Trevor W Robbins

  • Mild cognitive impairment in Parkinson disease: a multicenter pooled analysis.

    D. Aarsland;K. Bronnick;C. Williams-Gray;D. Weintraub

  • The cognitive ability of an incident cohort of Parkinson's patients in the UK. The CamPaIGN study

    Thomas Foltynie;Carol E. G. Brayne;Trevor W. Robbins;Roger A. Barker

  • Molecular Diversity of Midbrain Development in Mouse, Human, and Stem Cells

    Gioele La Manno;Gioele La Manno;Daniel Gyllborg;Simone Codeluppi;Simone Codeluppi;Kaneyasu Nishimura

  • A cell atlas of human thymic development defines T cell repertoire formation.

    Jong-Eun Park;Rachel A. Botting;Cecilia Domínguez Conde;Dorin-Mirel Popescu

  • The CamPaIGN study of Parkinson's disease: 10-year outlook in an incident population-based cohort

    Caroline H Williams-Gray;Sarah L Mason;Jonathan R Evans;Thomas Foltynie

  • Heterogeneity of Parkinson’s disease in the early clinical stages using a data driven approach

    S J G Lewis;T Foltynie;A D Blackwell;T W Robbins

  • Cognitive impairments in early Parkinson's disease are accompanied by reductions in activity in frontostriatal neural circuitry.

    Simon J. G. Lewis;Anja Dove;Trevor W. Robbins;Roger A. Barker

  • Cognitive impairment in Parkinson's disease: the dual syndrome hypothesis.

    Angie A. Kehagia;Roger A. Barker;Trevor W. Robbins

  • Cells of the human intestinal tract mapped across space and time.

    Rasa Elmentaite;Natsuhiko Kumasaka;Kenny Roberts;Aaron Fleming

  • l-Dopa medication remediates cognitive inflexibility, but increases impulsivity in patients with Parkinson’s disease

    Roshan Cools;Roger A Barker;Barbara J Sahakian;Trevor W Robbins

  • The spectrum of nonmotor symptoms in early Parkinson disease

    Tien Kheng Khoo;Alison J Yarnall;Gordon W Duncan;Shirley Coleman

  • Microglial activation correlates with severity in Huntington disease A clinical and PET study

    N. Pavese;A. Gerhard;Y. F. Tai;A. K. Ho

  • Long-term safety and tolerability of ProSavin, a lentiviral vector-based gene therapy for Parkinson's disease: a dose escalation, open-label, phase 1/2 trial

    Stéphane Palfi;Jean Marc Gurruchaga;G Scott Ralph;Helene Lepetit

  • Mechanisms of cognitive set flexibility in Parkinson's disease.

    Roshan Cools;Roger A. Barker;Barbara J. Sahakian;Trevor W. Robbins

  • Dopaminergic modulation of high‐level cognition in Parkinson’s disease: the role of the prefrontal cortex revealed by PET

    Roshan Cools;Elka Stefanova;Roger A. Barker;Trevor W. Robbins

Frequent Co-Authors

Thomas Foltynie
Thomas Foltynie University College London
David J. Burn
David J. Burn Newcastle University
James B. Rowe
James B. Rowe University of Cambridge
Trevor W. Robbins
Trevor W. Robbins University of Cambridge
Stephen B. Dunnett
Stephen B. Dunnett Cardiff University
Anne Elizabeth Rosser
Anne Elizabeth Rosser Cardiff University
Adrian M. Owen
Adrian M. Owen University of Western Ontario
David J. Brooks
David J. Brooks Newcastle University
Nicholas W. Wood
Nicholas W. Wood University College London
Paola Piccini
Paola Piccini Imperial College London

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