World's Best Scientists 2026 revealed!
Kenji Sugai

Kenji Sugai

D-Index & Metrics

Neuroscience

D-Index
36
Citations
5550
World Ranking
8995
National Ranking
330

Kenji Sugai 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 Kenji Sugai 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: 268 publications — 78th percentile

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

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

Kenji Sugai 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 Kenji Sugai 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: 36 D-Index — 7th percentile

7% of scientists in this discipline score the same or lower.

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

Overview

Kenji Sugai is affiliated with Tohoku University in Japan and specializes in research intersecting medicine and biochemistry, genetics, and molecular biology. Their work focuses significantly on pediatrics, perinatology, and child health, with additional contributions to psychiatry and mental health, genetics, cognitive neuroscience, and molecular biology.

The scientist's scholarly output spans various topics, including epilepsy research and treatment, pharmacological effects and toxicity studies, genetics and neurodevelopmental disorders, neonatal and fetal brain pathology, functional brain connectivity studies, neuroscience and neuropharmacology research, and EEG and brain-computer interfaces.

Kenji Sugai has published extensively in several academic journals. Frequent publication venues include:

  • Brain and Development
  • Journal of Neurosurgery Pediatrics
  • Epilepsia Open
  • Epilepsy & Behavior
  • Clinical Neurophysiology

Recent papers by Sugai encompass:

  • Epilepsy surgery in children under 3 years of age: surgical and developmental outcomes, 2021, Journal of Neurosurgery Pediatrics
  • Cognitive and developmental outcomes after pediatric insular epilepsy surgery for focal cortical dysplasia, 2020, Journal of Neurosurgery Pediatrics
  • Medical treatment in infants and young children with epilepsy: Off-label use of antiseizure medications. Survey Report of ILAE Task Force Medical Therapies in Children, 2022, Epilepsia Open
  • Variant in the neuronal vesicular SNARE VAMP2 (synaptobrevin-2): First report in Japan, 2020, Brain and Development
  • KCNT1-positive epilepsy of infancy with migrating focal seizures successfully treated with nonnarcotic antitussive drugs after treatment failure with quinidine: A case report, 2020, Brain and Development

Collaboration is an integral part of Sugai's research activities. Frequent co-authors include:

  • Masayuki Sasaki
  • Masaki Iwasaki
  • Eiji Nakagawa
  • Takashi Saito
  • Yuko Shimizu-Motohashi

Best Publications

  • De novo mutations in the autophagy gene WDR45 cause static encephalopathy of childhood with neurodegeneration in adulthood

    Hirotomo Saitsu;Taki Nishimura;Taki Nishimura;Kazuhiro Muramatsu;Hirofumi Kodera

  • Clinical spectrum of early onset epileptic encephalopathies caused by KCNQ2 mutation.

    Mitsuhiro Kato;Takanori Yamagata;Masaya Kubota;Hiroshi Arai

  • Acute encephalitis with refractory, repetitive partial seizures (AERRPS): a peculiar form of childhood encephalitis.

    H. Sakuma;Y. Awaya;M. Shiomi;H. Yamanouchi

  • Impaired neuronal KCC2 function by biallelic SLC12A5 mutations in migrating focal seizures and severe developmental delay.

    Hirotomo Saitsu;Miho Watanabe;Tenpei Akita;Chihiro Ohba

  • Efficacy of Intravenous Midazolam for Status Epilepticus in Childhood

    Kitami Hayashi;Makiko Osawa;Masao Aihara;Tatsuro Izumi

  • Complex behavioral automatism arising from insular cortex

    Takanobu Kaido;Taisuke Otsuki;Hideyuki Nakama;Yuu Kaneko

  • Long-term developmental outcome after early hemispherotomy for hemimegalencephaly in infants with epileptic encephalopathy

    Unknown

  • Single-photon emission computed tomography of the brain in autism: effect of the developmental level.

    Toshiaki Hashimoto;Masayuki Sasaki;Michio Fukumizu;Shigeru Hanaoka

  • New guidelines for management of febrile seizures in Japan

    Jun Natsume;Shin ichiro Hamano;Kuniaki Iyoda;Hideaki Kanemura

  • Paroxysmal discharges on EEG in young autistic patients are frequent in frontal regions

    Toshiaki Hashimoto;Masayuki Sasaki;Kenji Sugai;Shigeru Hanaoka

  • Current management of febrile seizures in Japan: An overview

    Kenji Sugai

  • Tremor and seizures associated with chronic manganese intoxication

    Hirofumi Komaki;Shun-ichi Maisawa;Kenji Sugai;Yu-ichi Kobayashi

  • Clinical aspects of hemimegalencephaly by means of a nationwide survey.

    Masayuki Sasaki;Toshiaki Hashimoto;Wakana Furushima;Mari Okada

  • Surgical Treatment of a Case of Early Infantile Epileptic Encephalopathy with Suppression-Bursts Associated with Focal Cortical Dysplasia

    Hirofumi Komaki;Kenji Sugai;Masayuki Sasaki;Toshiaki Hashimoto

  • Clobazam as a new antiepileptic drug and clorazepate dipotassium as an alternative antiepileptic drug in Japan.

    Kenji Sugai

  • Immunomodulatory therapy versus surgery for Rasmussen syndrome in early childhood.

    Yukitoshi Takahashi;Etsuko Yamazaki;Jun Mine;Yuko Kubota

  • Periaxin mutation in Japanese patients with Charcot-Marie-Tooth disease

    Unknown

  • A de novo missense mutation in SLC12A5 found in a compound heterozygote patient with epilepsy of infancy with migrating focal seizures

    T. Saito;A. Ishii;K. Sugai;M. Sasaki

  • Evolution of hemiplegic attacks and epileptic seizures in alternating hemiplegia of childhood

    Unknown

  • Muscle glycogen storage disease 0 presenting recurrent syncope with weakness and myalgia

    Sayuri Sukigara;Wen-Chen Liang;Hirofumi Komaki;Tokiko Fukuda

  • A family of distal arthrogryposis type 5 due to a novel PIEZO2 mutation

    Mariko Okubo;Atsushi Fujita;Yoshiaki Saito;Hirofumi Komaki

  • Hemimegalencephaly: a study of abnormalities occurring outside the involved hemisphere.

    N. Sato;A. Yagishita;H. Oba;Y. Miki

  • Decreased resting energy expenditure in patients with Duchenne muscular dystrophy

    Mami Shimizu-Fujiwara;Hirofumi Komaki;Eiji Nakagawa;Madoka Mori-Yoshimura

  • Electrophysiological evidence of cerebral dysfunction in childhood opsoclonus-myoclonus syndrome

    Hiroshi Sakuma;Yuko Shimizu;Yoshiaki Saito;Kenji Sugai

Frequent Co-Authors

Takashi Saito
Takashi Saito Nagoya City University
Noriko Sato
Noriko Sato Tokyo Medical and Dental University
Ikuya Nonaka
Ikuya Nonaka Tokyo Medical University
Ichizo Nishino
Ichizo Nishino Tokyo Medical University
Yu-ichi Goto
Yu-ichi Goto University of Tsukuba
Hiroshi Matsuda
Hiroshi Matsuda Tokyo University of Agriculture and Technology
Yoshihiko Saito
Yoshihiko Saito Nara Medical University
Sachio Takashima
Sachio Takashima Tottori University
Naomichi Matsumoto
Naomichi Matsumoto Yokohama City University
Satoru Noguchi
Satoru Noguchi Tokyo Medical University

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Related Online Degrees & Career Pathways

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These related online degrees provide neuroscience graduates with flexible opportunities to broaden their impact in mental health and human services, supporting a diverse range of fulfilling career options.

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