World's Best Scientists 2026 revealed!
Gert Jan Lammers

Gert Jan Lammers

D-Index & Metrics

Neuroscience

D-Index
69
Citations
20837
World Ranking
2593
National Ranking
84

Gert Jan Lammers 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 Gert Jan Lammers 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: 259 publications — 76th percentile

76% of scientists in this discipline score the same or lower.

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

Gert Jan Lammers 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 Gert Jan Lammers 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: 69 D-Index — 73rd percentile

73% of scientists in this discipline score the same or lower.

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

Overview

Gert Jan Lammers is affiliated with Leiden University in the Netherlands and conducts research primarily in the fields of neuroscience and psychology. Their work focuses extensively on topics related to sleep and wakefulness, encompassing sleep disorders, circadian rhythms, and related physiological and psychological processes.

The main fields of study for Lammers include:

  • Neuroscience
  • Psychology

Their subfields of study further specify areas within these disciplines, such as:

  • Cognitive Neuroscience
  • Experimental and Cognitive Psychology
  • Endocrine and Autonomic Systems
  • Physiology
  • Epidemiology

Lammers' research covers several main topics:

  • Sleep and Wakefulness Research
  • Sleep and related disorders
  • Circadian rhythm and melatonin
  • Restless Legs Syndrome Research
  • Sleep and Work-Related Fatigue
  • Obstructive Sleep Apnea Research
  • Regulation of Appetite and Obesity

The scientist has published numerous papers in notable venues, frequently contributing to:

  • Sleep Medicine
  • SLEEP
  • Journal of Sleep Research
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Sleep Medicine Reviews

Selected recent publications authored or co-authored by Gert Jan Lammers include:

  • Diagnosis of central disorders of hypersomnolence: A reappraisal by European experts, 2020, Sleep Medicine Reviews
  • European guideline and expert statements on the management of narcolepsy in adults and children, 2021, European Journal of Neurology
  • European guideline and expert statements on the management of narcolepsy in adults and children, 2021, Journal of Sleep Research
  • Safety and efficacy of pitolisant in children aged 6 years or older with narcolepsy with or without cataplexy: a double-blind, randomised, placebo-controlled trial, 2023, The Lancet Neurology
  • Vigilance: discussion of related concepts and proposal for a definition, 2021, Sleep Medicine

Frequent collaborators in Lammers' research include:

  • Rolf Fronczek
  • Sebastiaan Overeem
  • Yves Dauvilliers
  • Claudio L. Bassetti
  • Ramin Khatami

Best Publications

  • A mutation in a case of early onset narcolepsy and a generalized absence of hypocretin peptides in human narcoleptic brains

    Christelle Peyron;Juliette Faraco;William Rogers;Beth Ripley

  • Hypocretin (orexin) deficiency in human narcolepsy

    Seiji Nishino;Beth Ripley;Sebastiaan Overeem;Gert Jan Lammers

  • The role of cerebrospinal fluid hypocretin measurement in the diagnosis of narcolepsy and other hypersomnias.

    Emmanuel Mignot;Gert Jan Lammers;Beth Ripley;Michele Okun

  • Narcolepsy - clinical spectrum, aetiopathophysiology, diagnosis and treatment.

    Claudio L. A. Bassetti;Antoine Adamantidis;Denis Burdakov;Denis Burdakov;Denis Burdakov;Fang Han

  • Low cerebrospinal fluid hypocretin (orexin) and altered energy homeostasis in human narcolepsy

    Seiji Nishino;Beth Ripley;Sebastiaan Overeem;Sebastiaan Overeem;Sona Nevsimalova

  • A Single Night of Partial Sleep Deprivation Induces Insulin Resistance in Multiple Metabolic Pathways in Healthy Subjects

    Esther Donga;Marieke van Dijk;J. Gert van Dijk;Nienke R. Biermasz

  • CSF hypocretin/orexin levels in narcolepsy and other neurological conditions.

    B Ripley;S Overeem;N Fujiki;S Nevsimalova

  • Narcolepsy: clinical features, new pathophysiologic insights, and future perspectives.

    Sebastiaan Overeem;Emmanuel Mignot;J. GertvanDijk;Gert Jan Lammers

  • Hypocretin (orexin) loss in Parkinson's disease

    Rolf Fronczek;Sebastiaan Overeem;Sandy Y Y Lee;Ingrid M Hegeman

  • Pitolisant versus placebo or modafinil in patients with narcolepsy : a double-blind, randomised trial

    Yves Dauvilliers;Claudio Bassetti;Gert Jan Lammers;Isabelle Arnulf

  • EFNS guidelines on management of narcolepsy.

    M. Billiard;C. Bassetti;Y. Dauvilliers;L. Dolenc-Groselj

  • Elevated Tribbles homolog 2–specific antibody levels in narcolepsy patients

    Vesna Cvetkovic-Lopes;Laurence Bayer;Stéphane Dorsaz;Stéphanie Maret

  • The incidence of narcolepsy in Europe: Before, during, and after the influenza A(H1N1)pdm09 pandemic and vaccination campaigns

    Leonoor Wijnans;Coralie Lecomte;Corinne de Vries;Daniel Weibel

  • Hypocretin (orexin) loss in Alzheimer's disease.

    Rolf Fronczek;Rolf Fronczek;Sarita van Geest;Sarita van Geest;Marijke Frölich;Sebastiaan Overeem

  • Transesophageal echocardiography is superior to transthoracic echocardiography in management of patients of any age with transient ischemic attack or stroke.

    Sebastiaan F.T.M. de Bruijn;Willem R.P. Agema;Gert Jan Lammers;Ernst E. van der Wall

  • Gammahydroxybutyrate and narcolepsy : a double-blind placebo-controlled study

    G. J. Lammers;J. Arends;A. C. Declerck;M. D. Ferrari

  • ImmunoChip Study Implicates Antigen Presentation to T Cells in Narcolepsy

    Juliette Faraco;Ling Lin;Birgitte Rahbek Kornum;Birgitte Rahbek Kornum;Eimear E. Kenny

  • Clinical, polysomnographic and genome-wide association analyses of narcolepsy with cataplexy: a European Narcolepsy Network study

    Gianina Luca;José Haba-Rubio;Yves Dauvilliers;Gert-Jan Lammers

  • Hypocretin deficiency in narcoleptic humans is associated with abdominal obesity.

    Simon W Kok;Sebastiaan Overeem;Tommy L S Visscher;Gert Jan Lammers

  • Genome-wide association study identifies new HLA class II haplotypes strongly protective against narcolepsy

    Hyun Hor;Hyun Hor;Zoltán Kutalik;Zoltán Kutalik;Yves Dauvilliers;Armand Valsesia;Armand Valsesia;Armand Valsesia

  • Partial Sleep Restriction Decreases Insulin Sensitivity in Type 1 Diabetes

    Esther Donga;Marieke G Van Dijk;J. Gert van Dijk;Nienke R. Biermasz

  • Sleep and circadian rhythm alterations correlate with depression and cognitive impairment in Huntington's disease.

    N. Ahmad Aziz;Galia V. Anguelova;Johan Marinus;Gert Jan Lammers

  • The clinical features of cataplexy: A questionnaire study in narcolepsy patients with and without hypocretin-1 deficiency

    Sebastiaan Overeem;Sofie J. van Nues;Wendy L. van der Zande;Claire E. Donjacour

  • Hypocretin-1 CSF levels in anti-Ma2 associated encephalitis

    S. Overeem;J. Dalmau;L. Bataller;S. Nishino

Frequent Co-Authors

Yves Dauvilliers
Yves Dauvilliers University of Montpellier
Claudio L. Bassetti
Claudio L. Bassetti University of Bern
J.G. van Dijk
J.G. van Dijk Leiden University
Mehdi Tafti
Mehdi Tafti University of Lausanne
Poul Jennum
Poul Jennum University of Copenhagen
Birgit Högl
Birgit Högl Innsbruck Medical University
Johannes Mathis
Johannes Mathis University of Bern
Joan Santamaria
Joan Santamaria University of Barcelona
Dick F. Swaab
Dick F. Swaab Royal Netherlands Academy of Arts and Sciences
Roland D. Thijs
Roland D. Thijs Leiden University

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