World's Best Scientists 2026 revealed!
J. Michael Walker

J. Michael Walker

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Neuroscience 73 2191 2000 1038 928 140 20517
Medicine 74 19387 18195 9652 8903 141 20596

J. Michael Walker publications per year

The chart shows the history of publications by J. Michael Walker between 1976 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. J. Michael Walker published across 49 years, from 1976 to 2024, averaging 3.1 papers a year. Output peaked at 10 publications in 1998. 5 of the 150 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1976 to 2024. Vertical axis: number of publications, 0 to 10. Peak 10 publications in 1998. 1976: 2 publications 1977: 6 publications 1978: 1 publication 1979: 3 publications 1980: 2 publications 1981: 3 publications 1982: 3 publications 1983: 4 publications 1984: 3 publications 1985: 1 publication 1986: 2 publications 1987: 6 publications 1988: 3 publications 1989: 4 publications 1990: 7 publications 1991: 2 publications 1992: 4 publications 1993: 4 publications 1994: 2 publications 1995: 3 publications 1996: 4 publications 1997: 2 publications 1998: 10 publications 1999: 8 publications 2000: 3 publications 2001: 2 publications 2002: 6 publications 2003: 1 publication 2004: 5 publications 2005: 5 publications 2006: 5 publications 2007: 7 publications 2008: 6 publications 2009: 10 publications 2010: 4 publications 2011: 1 publication 2012: 0 publications 2013: 0 publications 2014: 0 publications 2015: 0 publications 2016: 0 publications 2017: 0 publications 2018: 0 publications 2019: 0 publications 2020: 1 publication 2021: 0 publications 2022: 0 publications 2023: 3 publications 2024: 2 publications
1976 2024

150 publications in total across all disciplines

View publications per year as a table
J. Michael Walker: publications per year, 1976 to 2024
Year Publications
1976 2
1977 6
1978 1
1979 3
1980 2
1981 3
1982 3
1983 4
1984 3
1985 1
1986 2
1987 6
1988 3
1989 4
1990 7
1991 2
1992 4
1993 4
1994 2
1995 3
1996 4
1997 2
1998 10
1999 8
2000 3
2001 2
2002 6
2003 1
2004 5
2005 5
2006 5
2007 7
2008 6
2009 10
2010 4
2011 1
2012 0
2013 0
2014 0
2015 0
2016 0
2017 0
2018 0
2019 0
2020 1
2021 0
2022 0
2023 3
2024 2
Total 150
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J. Michael Walker 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 J. Michael Walker sits on this spectrum.

No. of scientists
100 200 300 400 500
Bar chart with 86 bars. Horizontal axis: publications, 38–47 to 887+. Vertical axis: number of scientists, 0 to 539. Most scientists, 539, have 98–107 publications. The last bar groups every scientist with 887 publications or more. The highlighted bar, 138–147 publications, is where this scientist sits. 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 scientist 868–877 publications: 3 scientists 878–886 publications: 6 scientists 887+ publications: 100 scientists
38–47 publications 887+

This scientist: 140 publications — 38th percentile

38% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Neuroscience scientists by publication count, Research.com 2026 ranking edition. Based on 9,597 ranked scientists.
Publications Scientists This scientist
38–47 18
48–57 79
58–67 193
68–77 323
78–87 406
88–97 452
98–107 539
108–117 505
118–127 522
128–137 469
138–147 456 140
148–157 459
158–167 397
168–177 383
178–187 350
188–197 302
198–207 306
208–217 262
218–227 242
228–237 220
238–247 203
248–257 174
258–267 176
268–277 175
278–287 125
288–297 116
298–307 127
308–317 128
318–327 99
328–337 89
338–347 78
348–357 96
358–367 66
368–377 59
378–387 65
388–397 54
398–407 48
408–417 49
418–427 34
428–437 31
438–447 30
448–457 31
458–467 36
468–477 40
478–487 35
488–497 30
498–507 23
508–517 26
518–527 20
528–537 23
538–547 20
548–557 20
558–567 17
568–577 14
578–587 20
588–597 20
598–607 19
608–617 18
618–627 17
628–637 11
638–647 11
648–657 11
658–667 8
668–677 7
678–687 11
688–697 10
698–707 4
708–717 6
718–727 5
728–737 5
738–747 9
748–757 9
758–767 3
768–777 7
778–787 7
788–797 6
798–807 2
808–817 2
818–827 7
828–837 0
838–847 9
848–857 3
858–867 1
868–877 3
878–886 6
887+ 100
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J. Michael Walker 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 J. Michael Walker sits on this spectrum.

No. of scientists
100 200 300 400 500
Bar chart with 68 bars. Horizontal axis: D-Index, 30–31 to 163+. Vertical axis: number of scientists, 0 to 512. Most scientists, 512, have 46–47 D-Index. The last bar groups every scientist with 163 D-Index or more. The highlighted bar, 72–73 D-Index, is where this scientist sits. 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
30–31 D-Index 163+

This scientist: 73 D-Index — 78th percentile

78% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Neuroscience scientists by D-index, Research.com 2026 ranking edition. Based on 9,597 ranked scientists.
D-Index Scientists This scientist
30–31 42
32–33 172
34–35 296
36–37 435
38–39 459
40–41 456
42–43 467
44–45 478
46–47 512
48–49 435
50–51 425
52–53 418
54–55 392
56–57 357
58–59 334
60–61 328
62–63 260
64–65 278
66–67 239
68–69 250
70–71 210
72–73 200 73
74–75 189
76–77 170
78–79 146
80–81 113
82–83 126
84–85 100
86–87 84
88–89 99
90–91 84
92–93 85
94–95 72
96–97 76
98–99 45
100–101 49
102–103 43
104–105 32
106–107 45
108–109 50
110–111 32
112–113 39
114–115 32
116–117 29
118–119 27
120–121 19
122–123 23
124–125 27
126–127 16
128–129 24
130–131 13
132–133 21
134–135 17
136–137 14
138–139 15
140–141 10
142–143 10
144–145 13
146–147 9
148–149 8
150–151 6
152–153 6
154–155 7
156–157 7
158–159 10
160–161 4
162 8
163+ 100
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Overview

J. Michael Walker is affiliated with Indiana University in the United States. Their research spans multiple fields, primarily focusing on medicine and chemistry, with significant contributions to subfields such as spectroscopy, surgery, analytical chemistry, physiology, and cardiology and cardiovascular medicine.

The scientist's work frequently addresses topics including mass spectrometry techniques and applications, analytical chemistry and chromatography, analytical chemistry methods development, genetic diversity and population structure, species distribution and climate change, amphibian and reptile biology, and neuroscience of respiration and sleep.

Among the recent publications associated with J. Michael Walker are the following:

  • New Processes for Ionizing Nonvolatile Compounds in Mass Spectrometry: The Road of Discovery to Current State-of-the-Art, 2024, Journal of the American Society for Mass Spectrometry
  • New Ionization Processes for Ionizing Nonvolatile Compounds in Mass Spectrometry: The Road of Discovery to Current State-of-the-Art, 2020, Journal of the American Society for Mass Spectrometry
  • Taxonomic hypotheses and the biogeography of speciation in the Tiger Whiptail complex (Aspidoscelis tigris: Squamata, Teiidae), 2020, bioRxiv (Cold Spring Harbor Laboratory)
  • Health Outcomes of Gastric Bypass Patients Compared to Nonsurgical, Nonintervened Severely Obese, 2020, UNC Libraries
  • Renal Artery Embolization in Trauma: A Systematic Review, 2023, The Arab Journal of Interventional Radiology

J. Michael Walker has collaborated frequently with several researchers, including:

  • Sarah Trimpin
  • Frank S. Yenchick
  • Chuping Lee
  • Khoa Hoang
  • M. Pophristić

Their contributions have appeared in various scientific venues, notably:

  • Journal of the American Society for Mass Spectrometry
  • bioRxiv (Cold Spring Harbor Laboratory)
  • UNC Libraries
  • The Arab Journal of Interventional Radiology
  • Transplantation Reviews

Best Publications

  • Immunohistochemical distribution of cannabinoid CB1 receptors in the rat central nervous system.

    K Tsou;S Brown;M.C Sañudo-Peña;K Mackie

  • Endogenous Opioids: Biology and Function

    H Akil;S J Watson;E Young;M E Lewis

  • An endogenous capsaicin-like substance with high potency at recombinant and native vanilloid VR1 receptors

    Susan M. Huang;Tiziana Bisogno;Marcello Trevisani;Abdulmonem Al-Hayani

  • An endocannabinoid mechanism for stress-induced analgesia

    Andrea G. Hohmann;Richard L. Suplita;Nathan M. Bolton;Mark H. Neely

  • Pain modulation by release of the endogenous cannabinoid anandamide

    J. Michael Walker;Susan M. Huang;Nicole M. Strangman;Kang Tsou

  • Cannabinoid CB1 receptors are localized primarily on cholecystokinin-containing GABAergic interneurons in the rat hippocampal formation.

    K. Tsou;K. Mackie;M.C. Sañudo-Peña;J.M. Walker

  • N-oleoyldopamine, a novel endogenous capsaicin-like lipid that produces hyperalgesia.

    Constance J. Chu;Susan M. Huang;Luciano De Petrocellis;Tiziana Bisogno

  • Identification of a New Class of Molecules, the Arachidonyl Amino Acids, and Characterization of One Member That Inhibits Pain

    Susan M. Huang;Tiziana Bisogno;Timothy J. Petros;Sai Y. Chang

  • N -arachidonoyl glycine, an abundant endogenous lipid, potently drives directed cellular migration through GPR18, the putative abnormal cannabidiol receptor

    Douglas McHugh;Sherry S.J. Hu;Neta Rimmerman;Ana Juknat

  • Nonopiate effects of dynorphin and des-Tyr-dynorphin

    J. Michael Walker;Hylan C. Moises;David H. Coy;Giulio Baldrighi

  • Overexpressed Transient Receptor Potential Vanilloid 3 Ion Channels in Skin Keratinocytes Modulate Pain Sensitivity via Prostaglandin E2

    Susan M. Huang;Hyosang Lee;Man-Kyo Chung;Man-Kyo Chung;Una Park

  • Activational role of cannabinoids on movement.

    M.Clara Sañudo-Peña;Julian Romero;Garrett E Seale;J.Javier Fernandez-Ruiz

  • Incensole acetate, an incense component, elicits psychoactivity by activating TRPV3 channels in the brain

    Arieh Moussaieff;Neta Rimmerman;Tatiana Bregman;Alex Straiker

  • Suppression of Noxious Stimulus-Evoked Activity in the Ventral Posterolateral Nucleus of the Thalamus by a Cannabinoid Agonist: Correlation between Electrophysiological and Antinociceptive Effects

    W J Martin;A G Hohmann;J M Walker

  • Sex and hormonal cycle differences in rat brain levels of pain-related cannabimimetic lipid mediators

    Heather B. Bradshaw;Neta Rimmerman;Jocelyn F. Krey;J. Michael Walker

  • Physical withdrawal in rats tolerant to Δ9-tetrahydrocannabinol precipitated by a cannabinoid receptor antagonist

    Kang Tsou;Saundra L. Patrick;J.Michael Walker

  • An analog of enkephalin having prolonged opiate-like effects in vivo.

    JM Walker;GG Berntson;CA Sandman;DH Coy

  • Endogenous cannabinoids as an aversive or counter-rewarding system in the rat.

    M.Clara Sañudo-Peña;Kang Tsou;Eugene R Delay;Andrea G Hohman

  • The expanding field of cannabimimetic and related lipid mediators.

    Heather B Bradshaw;J Michael Walker

  • Prostaglandin E2 glycerol ester, an endogenous COX‐2 metabolite of 2‐arachidonoylglycerol, induces hyperalgesia and modulates NFκB activity

    S Shu-Jung Hu;H B Bradshaw;J S-C Chen;B Tan

  • Motor actions of cannabinoids in the basal ganglia output nuclei.

    M.Clara Sañudo-Peña;Kang Tsou;J.Michael Walker

Frequent Co-Authors

Huda Akil
Huda Akil University of Michigan–Ann Arbor
Gary G. Berntson
Gary G. Berntson The Ohio State University
Curt A. Sandman
Curt A. Sandman University of California, Irvine
David H. Coy
David H. Coy Tulane University
Ken Mackie
Ken Mackie Indiana University
Vincenzo Di Marzo
Vincenzo Di Marzo National Research Council (CNR)
Tiziana Bisogno
Tiziana Bisogno National Research Council (CNR)
Sarah Trimpin
Sarah Trimpin Wayne State University
Stanley J. Watson
Stanley J. Watson University of Michigan–Ann Arbor
Javier Fernández-Ruiz
Javier Fernández-Ruiz Complutense University of Madrid

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