World's Best Scientists 2026 revealed!

D-Index & Metrics

Neuroscience

D-Index
75
Citations
21471
World Ranking
2007
National Ranking
960

James P. 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 James P. 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: 236 publications — 71st percentile

71% of scientists in this discipline score the same or lower.

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

James P. 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 James P. 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: 75 D-Index — 80th percentile

80% of scientists in this discipline score the same or lower.

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

Overview

James P. O'Callaghan is affiliated with the National Institute for Occupational Safety and Health in the United States. Their research contributions span across the field of Medicine, with a focus on several subfields including Psychiatry and Mental Health, Neurology, Physiology, Molecular Biology, and Genetics.

O'Callaghan has published extensively on topics related to Fibromyalgia and Chronic Fatigue Syndrome Research, Spaceflight Effects on Biology, Neuroinflammation and Neurodegeneration Mechanisms, Long-Term Effects of COVID-19, Stress Responses and Cortisol, Tryptophan and Brain Disorders, and Pain Mechanisms and Treatments.

Frequent coauthors in their work include Lindsay T. Michalovicz, Kimberly A. Kelly, Byron C. Jones, Lu Lu, and Kimberly Sullivan.

Publication venues where O'Callaghan has made repeated contributions include:

  • Brain Behavior and Immunity
  • International Journal of Molecular Sciences
  • Brain Sciences
  • Life Sciences
  • Frontiers in Toxicology

Some of the recent papers associated with O'Callaghan's research interests are:

  • Reactive astrocyte nomenclature, definitions, and future directions, 2021, Nature Neuroscience
  • Colonic microbiota is associated with inflammation and host epigenomic alterations in inflammatory bowel disease, 2020, Nature Communications
  • Acetylcholinesterase inhibitor exposures as an initiating factor in the development of Gulf War Illness, a chronic neuroimmune disorder in deployed veterans, 2020, Neuropharmacology
  • Microglial activation and responses to vasculature that result from an acute LPS exposure, 2020, NeuroToxicology
  • Alterations in high-order diffusion imaging in veterans with Gulf War Illness is associated with chemical weapons exposure and mild traumatic brain injury, 2020, Brain Behavior and Immunity

Best Publications

  • Reactive astrocyte nomenclature, definitions, and future directions

    Carole Escartin;Elena Galea;András Lakatos;James P. O’Callaghan

  • Neuroendocrine aspects of the response to stress

    Diane B. Miller;James P. O'Callaghan

  • DARPP-32: Regulator of the Efficacy of Dopaminergic Neurotransmission

    A. A. Fienberg;N. Hiroi;Paul G Mermelstein;W. J. Song

  • Neurotoxicity profiles of substituted amphetamines in the C57BL/6J mouse.

    J P O'Callaghan;D B Miller

  • Biomarkers of Parkinson's disease: present and future.

    Diane B. Miller;James P. O’Callaghan

  • Mice deficient in TNF receptors are protected against dopaminergic neurotoxicity: implications for Parkinson’s disease

    Krishnan Sriram;Joanna M. Matheson;Stanley A. Benkovic;Diane B. Miller

  • Induction of gp130-related Cytokines and Activation of JAK2/STAT3 Pathway in Astrocytes Precedes Up-regulation of Glial Fibrillary Acidic Protein in the 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine Model of Neurodegeneration KEY SIGNALING PATHWAY FOR ASTROGLIOSIS IN VIVO?

    Krishnan Sriram;Stanley A. Benkovic;Meleik A. Hebert;Diane B. Miller

  • Quantification of the analgesic activity of narcotic antagonists by a modified hot-plate procedure.

    J P O'Callaghan;S G Holtzman

  • Astrogliosis in CNS pathologies: is there a role for microglia?

    Dan Zhang;Xiaoming Hu;Xiaoming Hu;Li Qian;Li Qian;James P. O’Callaghan

  • The Impact of Gender and Estrogen on Striatal Dopaminergic Neurotoxicity.

    Diane B. Miller;Syed F. Ali;James P. O'callaghan;Susan C. Laws

  • Distinct roles of PDE4 and PDE10A in the regulation of cAMP/PKA signaling in the striatum

    Akinori Nishi;Mahomi Kuroiwa;Diane B. Miller;James P. O'Callaghan

  • Environment-, drug- and stress-induced alterations in body temperature affect the neurotoxicity of substituted amphetamines in the C57BL/6J mouse.

    D B Miller;J P O'Callaghan

  • Glial fibrillary acidic protein and related glial proteins as biomarkers of neurotoxicity

    James P O’Callaghan;Krishnan Sriram

  • Divergent roles for tumor necrosis factor-alpha in the brain.

    Krishnan Sriram;James P. O’Callaghan

  • Time course of the development of Alzheimer-like pathology in the doubly transgenic PS1+APP mouse.

    Marcia N. Gordon;Leigh A. Holcomb;Paul T. Jantzen;Giovanni DiCarlo

  • Trimethyltin-induced neuronal damage in the rat brain: comparative studies using silver degeneration stains, immunocytochemistry and immunoassay for neuronotypic and gliotypic proteins.

    C D Balaban;J P O'Callaghan;M L Billingsley

  • Deficiency of TNF receptors suppresses microglial activation and alters the susceptibility of brain regions to MPTP-induced neurotoxicity: role of TNF-alpha.

    Krishnan Sriram;Joanna M. Matheson;Stanley A. Benkovic;Diane B. Miller

  • Minocycline attenuates microglial activation but fails to mitigate striatal dopaminergic neurotoxicity: role of tumor necrosis factor-alpha.

    Krishnan Sriram;Diane B. Miller;James P. O'Callaghan

  • Effects of 3,4-methylenedioxymethamphetamine on autonomic thermoregulatory responses of the rat.

    Christopher J. Gordon;William P. Watkinson;James P. O'Callaghan;Diane B. Miller

  • Brain injury in a dish : A model for reactive gliosis

    Michael K. McMillian;Linda Thai;J-S. Hong;James P. O'Callaghan

  • Aging, stress and the hippocampus.

    D.B. Miller;J.P. O’Callaghan

  • Functional profile of a novel modulator of serotonin, dopamine, and glutamate neurotransmission.

    Gretchen L. Snyder;Kimberly E. Vanover;Hongwen Zhu;Diane B. Miller

Frequent Co-Authors

Nancy G. Klimas
Nancy G. Klimas Nova Southeastern University
Robert W. Williams
Robert W. Williams University of Tennessee Health Science Center
Lu Lu
Lu Lu University of Tennessee Health Science Center
Akinori Nishi
Akinori Nishi Kurume University
Timothy Heeren
Timothy Heeren Boston University
Paul Greengard
Paul Greengard Rockefeller University
Giorgio Carmignoto
Giorgio Carmignoto National Research Council (CNR)
Xiaoming Hu
Xiaoming Hu University of Pittsburgh
Pierre J. Magistretti
Pierre J. Magistretti École Polytechnique Fédérale de Lausanne

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