World's Best Scientists 2026 revealed!
Simon J.G. Lewis

Simon J.G. Lewis

D-Index & Metrics

Neuroscience

D-Index
88
Citations
29700
World Ranking
1201
National Ranking
26

Simon J.G. Lewis 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 Simon J.G. Lewis 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: 322 publications — 85th percentile

85% of scientists in this discipline score the same or lower.

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

Simon J.G. Lewis 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 Simon J.G. Lewis 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: 88 D-Index — 88th percentile

88% of scientists in this discipline score the same or lower.

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

Overview

Simon J.G. Lewis is affiliated with the University of Sydney in Australia. Their primary fields of study include Medicine and Neuroscience, with significant involvement in Neurology, Cognitive Neuroscience, Psychiatry and Mental Health, Physiology, and Epidemiology. The main topics of their research focus on neurological conditions and treatments, particularly Parkinson's disease mechanisms and treatments, as well as sleep and wakefulness research and dementia and cognitive impairment studies.

Recent notable papers by Simon J.G. Lewis include:

  • Research criteria for the diagnosis of prodromal dementia with Lewy bodies, 2020, Neurology
  • Diagnosis and management of dementia with Lewy bodies: Fourth consensus report of the DLB Consortium, 2020, Newcastle University ePrints (Newcastle University)
  • Biomarkers of conversion to α-synucleinopathy in isolated rapid-eye-movement sleep behaviour disorder, 2021, The Lancet Neurology
  • Analysis of DNA methylation associates the cystine-glutamate antiporter SLC7A11 with risk of Parkinson's disease, 2020, Nature Communications
  • Lipid pathway dysfunction is prevalent in patients with Parkinson's disease, 2022, Brain

Their frequent co-authors are:

  • Elie Matar
  • Kaylena A. Ehgoetz Martens
  • Glenda M. Halliday
  • Bradley F. Boeve
  • John-Paul Taylor

Simon J.G. Lewis publishes regularly in several scientific venues, most prominently:

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

Their research covers extensive areas in neurology, such as Parkinson's disease and dementia with Lewy bodies, addressing both clinical diagnosis criteria and biomarkers for disease progression. The focus on sleep disorders, including REM sleep behavior disorder, highlights an interdisciplinary approach bridging neurology and sleep medicine.

Best Publications

  • Diagnosis and management of dementia with Lewy bodies Fourth consensus report of the DLB Consortium

    Ian G. McKeith;Bradley F. Boeve;Dennis W. DIckson;Glenda Halliday

  • Identification of novel risk loci, causal insights, and heritable risk for Parkinson's disease: a meta-analysis of genome-wide association studies

    Mike A Nalls;Cornelis Blauwendraat;Costanza L Vallerga;Karl Heilbron

  • Risk and predictors of dementia and parkinsonism in idiopathic REM sleep behaviour disorder: a multicentre study

    Ronald B Postuma;Alex Iranzo;Michele Hu;Birgit Högl

  • Research criteria for the diagnosis of prodromal dementia with Lewy bodies

    Ian G. McKeith;Tanis J. Ferman;Alan J. Thomas;Frédéric Blanc

  • 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

  • Dopaminergic basis for deficits in working memory but not attentional set-shifting in Parkinson's disease.

    Simon J.G. Lewis;Aleksandra Slabosz;Aleksandra Slabosz;Trevor W. Robbins;Roger A. Barker

  • A pathophysiological model of freezing of gait in Parkinson's disease

    Simon J.G. Lewis;Roger A. Barker

  • Striatal contributions to working memory: a functional magnetic resonance imaging study in humans.

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

  • Tau and α-synuclein in susceptibility to, and dementia in, Parkinson's disease

    An Goris;An Goris;Caroline H. Williams-Gray;Graeme R. Clark;Thomas Foltynie

  • Cognitive training in Parkinson disease A systematic review and meta-analysis

    Isabella H.K. Leung;Courtney C. Walton;Harry Hallock;Simon J.G. Lewis

  • L-DOPA disrupts activity in the nucleus accumbens during reversal learning in Parkinson's disease.

    Roshan Cools;Simon J G Lewis;Luke Clark;Roger A Barker

  • Dopamine Release in Dissociable Striatal Subregions Predicts the Different Effects of Oral Methylphenidate on Reversal Learning and Spatial Working Memory

    Philip L Clatworthy;Simon J G Lewis;Laurent Brichard;Young T Hong

  • Validation of the MDS clinical diagnostic criteria for Parkinson's disease.

    Ronald B. Postuma;Werner Poewe;Irene Litvan;Simon Lewis

  • Freezing of gait in Parkinson’s disease is associated with functional decoupling between the cognitive control network and the basal ganglia

    James M. Shine;Elie Matar;Philip B. Ward;Michael J. Frank

  • Using executive heterogeneity to explore the nature of working memory deficits in Parkinson’s disease

    Simon J.G. Lewis;Roshan Cools;Trevor W. Robbins;Anja Dove

  • Parkinson’s: a syndrome rather than a disease?

    Nataliya Titova;C. Padmakumar;Simon J. G. Lewis;K. Ray Chaudhuri;K. Ray Chaudhuri

  • Biomarkers and Parkinson's disease

    A W Michell;S J G Lewis;T Foltynie;R A Barker

  • Exploring the cortical and subcortical functional magnetic resonance imaging changes associated with freezing in Parkinson's disease

    James M. Shine;Elie Matar;Philip B. Ward;Samuel J. Bolitho

  • Abnormal frontal activations related to decision-making in current and former amphetamine and opiate dependent individuals.

    K. D. Ersche;P. C. Fletcher;S. J. G. Lewis;L. Clark

  • The Next Step A Common Neural Mechanism for Freezing of Gait

    Simon J. G. Lewis;James M. Shine

Frequent Co-Authors

Sharon L. Naismith
Sharon L. Naismith University of Sydney
James M. Shine
James M. Shine University of Sydney
Claire O'Callaghan
Claire O'Callaghan University of Cambridge
Glenda M. Halliday
Glenda M. Halliday University of Sydney
Ian B. Hickie
Ian B. Hickie University of Sydney
Ronald R. Grunstein
Ronald R. Grunstein Woolcock Institute of Medical Research
Courtney C. Walton
Courtney C. Walton University of Melbourne
Ahmed A. Moustafa
Ahmed A. Moustafa Bond University
Roger A. Barker
Roger A. Barker University of Cambridge
Jim Lagopoulos
Jim Lagopoulos University of the Sunshine Coast

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