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Katsuya Nagai

Katsuya Nagai

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Neuroscience 55 4744 4364 145 138 279 10208

Katsuya Nagai publications per year

The chart shows the history of publications by Katsuya Nagai between 1966 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Katsuya Nagai published across 59 years, from 1966 to 2024, averaging 5.4 papers a year. Output peaked at 24 publications in 2008. 3 of the 319 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1966 to 2024. Vertical axis: number of publications, 0 to 24. Peak 24 publications in 2008. 1966: 2 publications 1967: 0 publications 1968: 1 publication 1969: 0 publications 1970: 0 publications 1971: 3 publications 1972: 1 publication 1973: 3 publications 1974: 0 publications 1975: 1 publication 1976: 2 publications 1977: 0 publications 1978: 2 publications 1979: 1 publication 1980: 4 publications 1981: 1 publication 1982: 8 publications 1983: 3 publications 1984: 7 publications 1985: 9 publications 1986: 5 publications 1987: 4 publications 1988: 8 publications 1989: 5 publications 1990: 3 publications 1991: 5 publications 1992: 7 publications 1993: 5 publications 1994: 13 publications 1995: 11 publications 1996: 6 publications 1997: 7 publications 1998: 10 publications 1999: 5 publications 2000: 9 publications 2001: 12 publications 2002: 7 publications 2003: 15 publications 2004: 9 publications 2005: 11 publications 2006: 12 publications 2007: 14 publications 2008: 24 publications 2009: 13 publications 2010: 10 publications 2011: 4 publications 2012: 4 publications 2013: 4 publications 2014: 2 publications 2015: 5 publications 2016: 0 publications 2017: 2 publications 2018: 3 publications 2019: 2 publications 2020: 3 publications 2021: 0 publications 2022: 9 publications 2023: 0 publications 2024: 3 publications
1966 2024

319 publications in total across all disciplines

View publications per year as a table
Katsuya Nagai: publications per year, 1966 to 2024
Year Publications
1966 2
1967 0
1968 1
1969 0
1970 0
1971 3
1972 1
1973 3
1974 0
1975 1
1976 2
1977 0
1978 2
1979 1
1980 4
1981 1
1982 8
1983 3
1984 7
1985 9
1986 5
1987 4
1988 8
1989 5
1990 3
1991 5
1992 7
1993 5
1994 13
1995 11
1996 6
1997 7
1998 10
1999 5
2000 9
2001 12
2002 7
2003 15
2004 9
2005 11
2006 12
2007 14
2008 24
2009 13
2010 10
2011 4
2012 4
2013 4
2014 2
2015 5
2016 0
2017 2
2018 3
2019 2
2020 3
2021 0
2022 9
2023 0
2024 3
Total 319
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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.

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, 278–287 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: 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.

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
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
278–287 125 279
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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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.

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, 54–55 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: 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.

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 55
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
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

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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