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Mark A. Geyer

D-Index & Metrics

Medicine

D-Index
141
Citations
70108
World Ranking
1638
National Ranking
953

Neuroscience

D-Index
140
Citations
70109
World Ranking
198
National Ranking
129

Mark A. Geyer 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 Mark A. Geyer 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: 621 publications — 97th percentile

97% of scientists in this discipline score the same or lower.

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

Mark A. Geyer 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 Mark A. Geyer 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: 140 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.

Research.com Recognitions

  • 2004 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

Mark A. Geyer is affiliated with the University of California, San Diego in the United States. Their research spans the fields of Medicine and Neuroscience, with a focus on Psychiatry and Mental Health, Pharmacology, Cellular and Molecular Neuroscience, Virology, and Cognitive Neuroscience.

The scientist's work extensively covers topics including Cannabis and Cannabinoid Research, Bipolar Disorder and Treatment, HIV Research and Treatment, Schizophrenia Research and Treatment, Neuroscience and Neuropharmacology Research, Psychedelics and Drug Studies, and Sleep and Related Disorders.

Frequent co-authors who have collaborated with Mark A. Geyer include:

  • Jared W. Young
  • Arpi Minassian
  • William Perry
  • Nina Pocuca
  • T. Jordan Walter

Publications by Mark A. Geyer have appeared in various scientific venues, with frequent publications in:

  • Biological Psychiatry
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Behavioural Brain Research
  • Biological Psychiatry Cognitive Neuroscience and Neuroimaging
  • Cell Reports

Recent papers authored or co-authored by Mark A. Geyer include:

  • A Brief Historical Overview of Psychedelic Research, 2023, Biological Psychiatry Cognitive Neuroscience and Neuroimaging
  • Analysis of Genetically Regulated Gene Expression Identifies a Prefrontal PTSD Gene, SNRNP35, Specific to Military Cohorts, 2020, Cell Reports
  • The Effects of Cannabis Use on Cognitive Function in Healthy Aging: A Systematic Scoping Review, 2020, Archives of Clinical Neuropsychology
  • Prospective longitudinal assessment of sensorimotor gating as a risk/resiliency factor for posttraumatic stress disorder, 2022, Neuropsychopharmacology
  • HIV Transgenic Rats Demonstrate Impaired Sensorimotor Gating But Are Insensitive to Cannabinoid (Δ9-Tetrahydrocannabinol)-Induced Deficits, 2021, The International Journal of Neuropsychopharmacology

Mark A. Geyer has contributed to book publications, including a title published by Springer Science+Business Media:

  • Neuroscience of Social Stress, 2022

In 2004, Mark A. Geyer was recognized as a Fellow of the American Association for the Advancement of Science (AAAS).

Best Publications

  • Human studies of prepulse inhibition of startle: normal subjects, patient groups, and pharmacological studies.

    David L. Braff;Mark A. Geyer;Neal R. Swerdlow

  • Habituation revisited: an updated and revised description of the behavioral characteristics of habituation.

    Catharine H. Rankin;Thomas Abrams;Robert J. Barry;Seema Bhatnagar

  • Pharmacological studies of prepulse inhibition models of sensorimotor gating deficits in schizophrenia: a decade in review.

    Mark A. Geyer;Kirsten Krebs-Thomson;David L. Braff;Neal R. Swerdlow

  • Sensorimotor Gating and Schizophrenia: Human and Animal Model Studies

    David L. Braff;Mark A. Geyer

  • Cognitive dysfunction in psychiatric disorders: characteristics, causes and the quest for improved therapy

    Mark J. Millan;Yves Agid;Martin Brüne;Edward T. Bullmore

  • Prestimulus Effects on Human Startle Reflex in Normals and Schizophrenics

    David Braff;Claudia Stone;Enoch Callaway;Mark Geyer

  • Gating and habituation of the startle reflex in schizophrenic patients.

    David L. Braff;Christian Grillon;Mark A. Geyer

  • Neural circuit regulation of prepulse inhibition of startle in the rat: current knowledge and future challenges.

    N R Swerdlow;M A Geyer;D L Braff

  • Assessing the Validity of an Animal Model of Deficient Sensorimotor Gating in Schizophrenic Patients

    Neal R. Swerdlow;David L. Braff;Navid Taaid;Mark A. Geyer

  • Using an Animal Model of Deficient Sensorimotor Gating to Study the Pathophysiology and New Treatments of Schizophrenia

    Neal R. Swerdlow;Mark A. Geyer

  • Dopaminergic stimulation disrupts sensorimotor gating in the rat.

    Robert S. Mansbach;Mark A. Geyer;David L. Braff

  • Dopamine D4 Receptor-Knock-Out Mice Exhibit Reduced Exploration of Novel Stimuli

    Stephanie C. Dulawa;David K. Grandy;Malcolm J. Low;Martin P. Paulus

  • Startle response models of sensorimotor gating and habituation deficits in schizophrenia.

    Mark A. Geyer;Neal R. Swerdlow;Robert S. Mansbach;David L. Braff

  • Isolation rearing of rats produces a deficit in prepulse inhibition of acoustic startle similar to that in schizophrenia.

    Mark A. Geyer;Lawrence Stephen Wilkinson;Trevor Humby;Trevor W. Robbins

  • Impaired prepulse inhibition of acoustic and tactile startle response in patients with Huntington's disease.

    N R Swerdlow;J Paulsen;D L Braff;N Butters

  • Serotonin research: contributions to understanding psychoses.

    Mark A. Geyer;Franz X. Vollenweider

  • A preliminary assessment of sensorimotor gating in patients with obsessive compulsive disorder

    N.R. Swerdlow;C.H. Benbow;S. Zisook;M.A. Geyer

  • The neural substrates of sensorimotor gating of the startle reflex: a review of recent findings and their implications:

    N.R. Swerdlow;S.B. Caine;D.L. Braff;M.A. Geyer

  • Central dopamine hyperactivity in rats mimics abnormal acoustic startle response in schizophrenics

    N.R. Swerdlow;N.R. Swerdlow;D.L. Braff;D.L. Braff;M.A. Geyer;M.A. Geyer;G.F. Koob;G.F. Koob

  • Startle Habituation and Sensorimotor Gating in Schizophrenia and Related Animal Models

    Mark A. Geyer;David L. Braff

Frequent Co-Authors

Jared W. Young
Jared W. Young University of California, San Diego
Neal R. Swerdlow
Neal R. Swerdlow University of California, San Diego
Victoria B. Risbrough
Victoria B. Risbrough University of California, San Diego
David L. Braff
David L. Braff University of California, San Diego
Martin P. Paulus
Martin P. Paulus Laureate Institute for Brain Research
Arpi Minassian
Arpi Minassian University of California, San Diego
William Perry
William Perry University of California, San Diego
Caroline M. Nievergelt
Caroline M. Nievergelt University of California, San Diego
Dewleen G. Baker
Dewleen G. Baker University of California, San Diego
Franz X. Vollenweider
Franz X. Vollenweider University of Zurich

External Links

Personal website of Mark A. Geyer

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Best Scientists Citing Mark A. Geyer

Neal R. Swerdlow

Neal R. Swerdlow

University of California, San Diego

Publications: 158

Joram Feldon

Joram Feldon

ETH Zurich

Publications: 131

Maarten van den Buuse

Maarten van den Buuse

La Trobe University

Publications: 127

Gregory A. Light

Gregory A. Light

University of California, San Diego

Publications: 119

David L. Braff

David L. Braff

University of California, San Diego

Publications: 111

Robert Freedman

Robert Freedman

University of Colorado Anschutz Medical Campus

Publications: 99

Jared W. Young

Jared W. Young

University of California, San Diego

Publications: 95

Veena Kumari

Veena Kumari

Brunel University London

Publications: 87

Michael Davis

Michael Davis

Georgia Institute of Technology

Publications: 84

Berend Olivier

Berend Olivier

Utrecht University

Publications: 79

Victoria B. Risbrough

Victoria B. Risbrough

University of California, San Diego

Publications: 78

Franz X. Vollenweider

Franz X. Vollenweider

University of Zurich

Publications: 74

Trevor W. Robbins

Trevor W. Robbins

University of Cambridge

Publications: 70

Daniel C. Javitt

Daniel C. Javitt

Columbia University

Publications: 69

Michael Koch

Michael Koch

University of Bremen

Publications: 68

Dewleen G. Baker

Dewleen G. Baker

University of California, San Diego

Publications: 68

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