Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation Index, Universities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025
* Total Citation Counts Rankings
Ranking Based On Selection :1
Plant hormones
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,125
5,022
0.414
* Total Citation Counts Rankings
Ranking Based On Selection :2
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,944
2,855
0.287
* Total Citation Counts Rankings
Ranking Based On Selection :3
Osteoarthritis
Rheumatoid arthritis
Orthopaedics
Hand surgery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,225
2,338
0.324
* Total Citation Counts Rankings
Ranking Based On Selection :4
bacteriology
virulence
silkworm
insect
infection
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,779
1,747
0.302
* Total Citation Counts Rankings
Ranking Based On Selection :5
Brain Tumor
Gene Therapy
Targeted Drug
Skull Base
Endoscopy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,706
1,992
0.349
* Total Citation Counts Rankings
Ranking Based On Selection :6
Endoscopy
Gastroenterology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,534
2,516
0.455
* Total Citation Counts Rankings
Ranking Based On Selection :7
Biophysics
Photobiology
Photochemistry
Spectroscopy
Optogenetics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,178
1,677
0.401
* Total Citation Counts Rankings
Ranking Based On Selection :8
epidemiology
causal inference
social science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,758
1,761
0.469
* Total Citation Counts Rankings
Ranking Based On Selection :9
Oncology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,918
1,750
0.600
* Total Citation Counts Rankings
Ranking Based On Selection :10
Gynecological pathology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,724
1,373
0.504
* Total Citation Counts Rankings
Ranking Based On Selection :11
photosynthesis
plant physiology
biochemistry
biophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,460
1,704
0.693
* Total Citation Counts Rankings
Ranking Based On Selection :12
Thoracic Surgery
Lung cancer
Lung Transplantation
Patient safety
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,344
1,123
0.479
* Total Citation Counts Rankings
Ranking Based On Selection :13
Neuroscience
Drug Development
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,145
882
0.411
* Total Citation Counts Rankings
Ranking Based On Selection :14
Medicinal Chemistry
Nuclear Receptors
RXR
PET imaging
BNCT
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,050
1,126
0.549
* Total Citation Counts Rankings
Ranking Based On Selection :15
organ-on-a-chip
ischemia-reperfusion injury
space medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,972
896
0.454
* Total Citation Counts Rankings
Ranking Based On Selection :16
Biophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,416
961
0.679
* Total Citation Counts Rankings
Ranking Based On Selection :17
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,351
609
0.451
* Total Citation Counts Rankings
Ranking Based On Selection :18
Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,254
918
0.732
* Total Citation Counts Rankings
Ranking Based On Selection :19
General Internal Medicine
Epidemiology
Pharmacology
Castleman disease
Physician well-being
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,216
1,166
0.959
* Total Citation Counts Rankings
Ranking Based On Selection :20
Immunology
Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,037
321
0.310
* Total Citation Counts Rankings
Ranking Based On Selection :21
Endocrinology Cell Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,015
300
0.296
* Total Citation Counts Rankings
Ranking Based On Selection :22
Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
984
735
0.747
* Total Citation Counts Rankings
Ranking Based On Selection :23
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
861
780
0.906
* Total Citation Counts Rankings
Ranking Based On Selection :24
Cognitive Neuroscience
Somatosensory
High filed fMRI
Neuroimaging
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
860
600
0.698
* Total Citation Counts Rankings
Ranking Based On Selection :25
Animal Ecology
Behavioral Ecology
Evolutionary Ecology
Community Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
836
529
0.633
Ken Ichiro Hayashi
Okayama University of Science
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,125
5,022
0.414
Keiji Naruse
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,944
2,855
0.287
Keiichiro Nishida
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,225
2,338
0.324
Osteoarthritis
Rheumatoid arthritis
Orthopaedics
Hand surgery
Chikara Kaito
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,779
1,747
0.302
bacteriology
virulence
silkworm
insect
infection
Kazuhiko Kurozumi
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,706
1,992
0.349
Brain Tumor
Gene Therapy
Targeted Drug
Skull Base
Endoscopy
Yoshiro Kawahara
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,534
2,516
0.455
Endoscopy
Gastroenterology
Yuki Sudo
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,178
1,677
0.401
Biophysics
Photobiology
Photochemistry
Spectroscopy
Optogenetics
Etsuji Suzuki
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,758
1,761
0.469
epidemiology
causal inference
social science
Tadahiko Shien|Shien T
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,918
1,750
0.600
Hiroyuki Yanai
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,724
1,373
0.504
Ryo Nagao
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,460
1,704
0.693
photosynthesis
plant physiology
biochemistry
biophysics
Yamane Masaomi
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,344
1,123
0.479
Thoracic Surgery
Lung cancer
Lung Transplantation
Patient safety
Tsuyoshi Inoue
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,145
882
0.411
Neuroscience
Drug Development
Hiroki Kakuta
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,050
1,126
0.549
Medicinal Chemistry
Nuclear Receptors
RXR
PET imaging
BNCT
Ken Takahashi
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,972
896
0.454
organ-on-a-chip
ischemia-reperfusion injury
space medicine
Yosuke Senju
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,416
961
0.679
Takahiro Kataoka
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,351
609
0.451
Toshiharu Mitsuhashi
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,254
918
0.732
Yoshito Nishimura
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,216
1,166
0.959
General Internal Medicine
Epidemiology
Pharmacology
Castleman disease
Physician well-being
Naoki Kanayama
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,037
321
0.310
Mitsumori Kawaminami
Okayama University of Science
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,015
300
0.296
Endocrinology Cell Biology
Muzembo Basilua Andre
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
984
735
0.747
Yoshihiro Otani
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
861
780
0.906
Jiajia Yang
Okayama University
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
860
600
0.698
Cognitive Neuroscience
Somatosensory
High filed fMRI
Neuroimaging
Tomohiro Takeyama
Okayama University of Science
Okayama, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
836
529
0.633
Animal Ecology
Behavioral Ecology
Evolutionary Ecology
Community Ecology