World's Best Scientists 2026 revealed!
Ken-ichi Honma

Ken-ichi Honma

D-Index & Metrics

Neuroscience

D-Index
74
Citations
15692
World Ranking
2143
National Ranking
52

Ken-ichi Honma 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 Ken-ichi Honma 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: 325 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.

Ken-ichi Honma 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 Ken-ichi Honma 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: 74 D-Index — 79th percentile

79% of scientists in this discipline score the same or lower.

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

Overview

Ken-ichi Honma is a researcher affiliated with Hokkaido University in Japan, specializing in neuroscience and medicine. Their research primarily focuses on circadian rhythm and melatonin, exploring the mechanisms of sleep and wakefulness, photoreceptor and optogenetics research, neuroendocrine regulation of behavior, dietary effects on health, spaceflight effects on biology, and neural dynamics and brain function.

The scientist has contributed significantly to the fields of endocrinology, cognitive neuroscience, cellular and molecular neuroscience, social psychology, and physiology. Studies often examine the endocrine and autonomic systems, reflecting a deep engagement with the biological underpinnings of circadian processes.

Ken-ichi Honma's work has been published in various scientific venues, including multiple publications in the Journal of Biological Rhythms and the American Journal of Physiology-Regulatory, Integrative and Comparative Physiology. Other journals featuring their research include Frontiers in Neuroscience, Journal of Neurochemistry, and Scientific Reports.

Recent papers include:

  • "Roles of Neuropeptides, VIP and AVP, in the Mammalian Central Circadian Clock" (2021, Frontiers in Neuroscience)
  • "GABAergic mechanisms in the suprachiasmatic nucleus that influence circadian rhythm" (2020, Journal of Neurochemistry)
  • "The Suprachiasmatic Nucleus at 50: Looking Back, Then Looking Forward" (2024, Journal of Biological Rhythms)
  • "CHRONO and DEC1/DEC2 compensate for lack of CRY1/CRY2 in expression of coherent circadian rhythm but not in generation of circadian oscillation in the neonatal mouse SCN" (2021, Scientific Reports)
  • "Phase Gradients and Anisotropy of the Suprachiasmatic Network: Discovery of Phaseoids" (2021, eNeuro)

Frequent collaborators in their work include researchers such as Sato Honma, Daisuke Ono, Rae Silver, T. Yoshikawa, and Y. Yamanaka, indicating a collaborative approach to investigating circadian and neural dynamics.

Best Publications

  • Dec1 and Dec2 are regulators of the mammalian molecular clock

    Sato Honma;Takeshi Kawamoto;Yumiko Takagi;Katsumi Fujimoto

  • Melatonin induces γ-glutamylcysteine synthetase mediated by activator protein-1 in human vascular endothelial cells

    Yoshishige Urata;Sato Honma;Shinji Goto;Sachiko Todoroki

  • Two distinct oscillators in the rat suprachiasmatic nucleus in vitro

    Kazuyuki Shinohara;Sato Honma;Yumiko Katsuno;Hiroshi Abe

  • Separate oscillating cell groups in mouse suprachiasmatic nucleus couple photoperiodically to the onset and end of daily activity.

    Natsuko Inagaki;Sato Honma;Daisuke Ono;Yusuke Tanahashi

  • Cellular clocks in AVP neurons of the SCN are critical for interneuronal coupling regulating circadian behavior rhythm.

    Michihiro Mieda;Daisuke Ono;Emi Hasegawa;Hitoshi Okamoto

  • Human blood metabolite timetable indicates internal body time

    Takeya Kasukawa;Masahiro Sugimoto;Masahiro Sugimoto;Akiko Hida;Yoichi Minami

  • Circadian periods of single suprachiasmatic neurons in rats

    Sato Honma;Tetsuo Shirakawa;Yumiko Katsuno;Masakazu Namihira

  • Effects of exposure to a circularly polarized 50-Hz magnetic field on plasma and pineal melatonin levels in rats.

    Masamichi Kato;Ken-Ichi Honma;Tsukasa Shigemitsu;Yoichi Shiga

  • Phase-advance shifts of human circadian pacemaker are accelerated by daytime physical exercise

    Toshihiko Miyazaki;Satoko Hashimoto;Satoru Masubuchi;Sato Honma

  • A human phase response curve for bright light pulses

    K. Honma

  • Circadian oscillation of BMAL1, a partner of a mammalian clock gene Clock, in rat suprachiasmatic nucleus

    Sato Honma;Masaaki Ikeda;Hiroshi Abe;Yusuke Tanahashi

  • Clock genes outside the suprachiasmatic nucleus involved in manifestation of locomotor activity rhythm in rats.

    Satoru Masubuchi;Sato Honma;Hiroshi Abe;Kouji Ishizaki

  • Activity rhythms in the circadian domain appear in suprachiasmatic nuclei lesioned rats given methamphetamine

    Ken-Ichi Honma;Sato Honma;Tsutomu Hiroshige

  • Seasonal variation in the human circadian rhythm: dissociation between sleep and temperature rhythm.

    K.-I. Honma;S. Honma;M. Kohsaka;N. Fukuda

  • Response Curve, Free-running Period, and Activity Time in Circadian Locomotor Rhythm of Rats

    Ken-ichi Honma;Sato Honma;Tsutomu Hiroshige

  • Diversity in the circadian periods of single neurons of the rat suprachiasmatic nucleus depends on nuclear structure and intrinsic period.

    Sato Honma;Wataru Nakamura;Tetsuo Shirakawa;Ken-ichi Honma

  • Effects of restricted daily feeding on freerunning circadian rhythms in rats.

    Ken-Ichi Honma;Christiana von Goetz;Jürgen Aschoff

  • Synchronization of circadian firing rhythms in cultured rat suprachiasmatic neurons.

    Tetsuo Shirakawa;Sato Honma;Yumiko Katsuno;Haruhisa Oguchi

  • A novel autofeedback loop of Dec1 transcription involved in circadian rhythm regulation

    Takeshi Kawamoto;Mitsuhide Noshiro;Fuyuki Sato;Koji Maemura

  • Zeitgebers, Entrainment, and Masking: Some Unsettled Questions

    J. Aschoff;S. Daan;K.-I. Honma

  • Clock mutation lengthens the circadian period without damping rhythms in individual SCN neurons.

    Wataru Nakamura;Sato Honma;Tetsuo Shirakawa;Ken-ichi Honma

Frequent Co-Authors

Sato Honma
Sato Honma Hokkaido University
Hiroshi Abe
Hiroshi Abe Nagoya University
Mitsuhide Noshiro
Mitsuhide Noshiro Hiroshima University
Yoshihiro Ohmiya
Yoshihiro Ohmiya National Institute of Advanced Industrial Science and Technology
Takeshi Kawamoto
Takeshi Kawamoto Hiroshima University
Yukio Kato
Yukio Kato Hiroshima University
Hanspeter Herzel
Hanspeter Herzel Humboldt-Universität zu Berlin
Kazunori Yasuda
Kazunori Yasuda Hokkaido University
Stuart E. Dryer
Stuart E. Dryer University of Houston
Shigenobu Shibata
Shigenobu Shibata Waseda University

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