World's Best Scientists 2026 revealed!
Katsuya Nagai

Katsuya Nagai

D-Index & Metrics

Neuroscience

D-Index
55
Citations
10208
World Ranking
4744
National Ranking
145

Katsuya Nagai 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 Katsuya Nagai 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: 279 publications — 80th percentile

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

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

Katsuya Nagai 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 Katsuya Nagai 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: 55 D-Index — 52nd percentile

52% of scientists in this discipline score the same or lower.

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

Overview

Katsuya Nagai is affiliated with Osaka University in Japan, with research spanning engineering and neuroscience disciplines. Their work primarily focuses on electrical and electronic engineering and the neuroendocrine regulation of behavior, with contributions also touching on plant science, surgery, and cognitive psychology.

Their published research includes investigations into ferroelectric devices, neural computing, endocrine systems, and circadian rhythms. Key topics covered in their work are:

  • Ferroelectric and Negative Capacitance Devices
  • Advanced Memory and Neural Computing
  • Sesame and Sesamin Research
  • Cardiovascular, Neuropeptides, and Oxidative Stress Research
  • Sleep and Related Disorders
  • Circadian Rhythm and Melatonin
  • Neuroendocrine Regulation and Behavior

Nagai's frequent publication venues highlight a diverse scientific portfolio, including

  • Physiological Research
  • Communications Biology
  • IEEE Transactions on Electron Devices
  • Neuroscience Letters
  • ECS Meeting Abstracts

Important recent papers authored or co-authored by Nagai are:

  • "A Simple Approach to Growth Mode of InN and InGaN Thin Films on GaN(0001) Substrate," 2020, ECS Meeting Abstracts
  • "Development of a High-Endurance Ferroelectric Capacitor for FeRAM in Automotive and Industrial Applications," 2024, IEEE Transactions on Electron Devices

While Nagai is not the first author in many of the top-cited works linked to their network, collaborations with researchers across a range of topics are evident. Frequent co-authors include Yuko Horii, Yoshiko Misonou, Wensheng Wang, Kazuaki Takai, and Takashi Eshita, each having co-published multiple papers with Nagai.

The body of research involving sympathetic nerve activity, blood flow modulation, phase advance of circadian rhythm, and the effects of various biochemical agents on neural and physiological systems indicates a multidisciplinary approach linking engineering principles with biological systems.

Best Publications

  • Transmembrane phosphoprotein Cbp regulates the activities of Src-family tyrosine kinases.

    Masahiro Kawabuchi;Yoshinori Satomi;Toshifumi Takao;Yasutsugu Shimonishi

  • The suprachiasmatic nucleus balances sympathetic and parasympathetic output to peripheral organs through separate preautonomic neurons.

    Ruud M. Buijs;Susanne E. la Fleur;Joke Wortel;Caroline van Heyningen

  • Parasympathetic and sympathetic control of the pancreas: A role for the suprachiasmatic nucleus and other hypothalamic centers that are involved in the regulation of food intake

    Ruud M. Buijs;Soo Jin Chun;Akira Niijima;Herms J. Romijn

  • CKIε/δ-dependent phosphorylation is a temperature-insensitive, period-determining process in the mammalian circadian clock

    Yasushi Isojima;Masato Nakajima;Hideki Ukai;Hiroshi Fujishima

  • Effect of bilateral lesions of the suprachiasmatic nuclei on the circadian rhythm of food-intake.

    Katsuya Nagai;Takashi Nishio;Hachiro Nakagawa;Shoji Nakamura

  • SCN output drives the autonomic nervous system: with special reference to the autonomic function related to the regulation of glucose metabolism.

    K Nagai;N Nagai;K Shimizu;S Chun

  • Effects of intraduodenal injection of Lactobacillus johnsonii La1 on renal sympathetic nerve activity and blood pressure in urethane-anesthetized rats

    Mamoru Tanida;Toshihiko Yamano;Keiko Maeda;Nobuaki Okumura

  • Olfactory stimulation with scent of grapefruit oil affects autonomic nerves, lipolysis and appetite in rats.

    Jiao Shen;Akira Niijima;Mamoru Tanida;Yuko Horii

  • CK2alpha phosphorylates BMAL1 to regulate the mammalian clock.

    Teruya Tamaru;Jun Hirayama;Jun Hirayama;Yasushi Isojima;Katsuya Nagai

  • A missense variation in human Casein kinase I Epsilon gene that induces functional alteration and shows an inverse association with circadian rhythm sleep disorders

    Atsuko Takano;Makoto Uchiyama;Naofumi Kajimura;Kazuo Mishima

  • Possible role of L-carnosine in the regulation of blood glucose through controlling autonomic nerves.

    Katsuya Nagai;Akira Niijima;Toshihiko Yamano;Hiroto Otani

  • Olfactory stimulation with scent of lavender oil affects autonomic neurotransmission and blood pressure in rats.

    Mamoru Tanida;Akira Niijima;Jiao Shen;Takuo Nakamura

  • Tyrosine Phosphorylation of Shc Is Mediated through Lyn and Syk in B Cell Receptor Signaling (

    Katsuya Nagai;Minoru Takata;Hirohei Yamamura;Tomohiro Kurosaki

  • Ultraweak biochemiluminescence detected from rat hippocampal slices.

    Yasushi Isojima;Takashi Isoshima;Katsuya Nagai;Kazuro Kikuchi

  • High-fat diet-induced obesity is attenuated by probiotic strain Lactobacillus paracasei ST11 (NCC2461) in rats

    Mamoru Tanida;Mamoru Tanida;Jiao Shen;Keiko Maeda;Yuko Horii

  • Effects of Adiponectin on the Renal Sympathetic Nerve Activity and Blood Pressure in Rats

    Mamoru Tanida;Jiao Shen;Yuko Horii;Morihiro Matsuda

  • Effects of the probiotic strain Lactobacillus johnsonii strain La1 on autonomic nerves and blood glucose in rats

    Toshihiko Yamano;Mamoru Tanida;Akira Niijima;Keiko Maeda

  • Effects of light stimulation on the activity of the autonomic nerves in anesthetized rats.

    Akira Niijima;Katsuya Nagai;Nobuo Nagai;Hachiro Akagawa

  • Role of SCN in daily rhythms of plasma glucose, FFA, insulin and glucagon.

    Hideki Yamamoto;Katsuya Nagai;Hachiro Nakagawa

  • Suprachiasmatic nucleus circadian oscillatory protein, a novel binding partner of K-Ras in the membrane rafts, negatively regulates MAPK pathway.

    Kimiko Shimizu;Masato Okada;Katsuya Nagai;Yoshitaka Fukada

  • Olfactory stimulation with scent of essential oil of grapefruit affects autonomic neurotransmission and blood pressure.

    Mamoru Tanida;Akira Niijima;Jiao Shen;Takuo Nakamura

Frequent Co-Authors

Masato Okada
Masato Okada Osaka University
Hideki Yamamoto
Hideki Yamamoto Osaka University
Hitoshi Hashimoto
Hitoshi Hashimoto Osaka University
Toshifumi Takao
Toshifumi Takao Osaka University
Norio Ishida
Norio Ishida National Institute of Advanced Industrial Science and Technology
Hirohei Yamamura
Hirohei Yamamura Kobe University
Takeshi Yagi
Takeshi Yagi Osaka University
Masaya Tohyama
Masaya Tohyama Kindai University
Yutaka Fukuda
Yutaka Fukuda Osaka University
Kazuro Kikuchi
Kazuro Kikuchi National Institution for Academic Degrees and Quality Enhancement of Higher Education

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