Norie Koga

1.2k total citations · 1 hit paper
12 papers, 906 citations indexed

About

Norie Koga is a scholar working on Psychiatry and Mental health, Biological Psychiatry and Experimental and Cognitive Psychology. According to data from OpenAlex, Norie Koga has authored 12 papers receiving a total of 906 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Psychiatry and Mental health, 5 papers in Biological Psychiatry and 4 papers in Experimental and Cognitive Psychology. Recurrent topics in Norie Koga's work include Bipolar Disorder and Treatment (6 papers), Tryptophan and brain disorders (5 papers) and Mental Health Research Topics (4 papers). Norie Koga is often cited by papers focused on Bipolar Disorder and Treatment (6 papers), Tryptophan and brain disorders (5 papers) and Mental Health Research Topics (4 papers). Norie Koga collaborates with scholars based in Japan, United Kingdom and China. Norie Koga's co-authors include Hiroshi Kunugi, Kotaro Hattori, Toshiya Teraishi, Miho Ota, Sumiko Yoshida, Emiko Aizawa, Takashi Asahara, Takuya Takahashi, Hirokazu Tsuji and Hiroaki Hori and has published in prestigious journals such as Journal of Affective Disorders, The Journal of Clinical Psychiatry and Journal of Psychiatric Research.

In The Last Decade

Norie Koga

12 papers receiving 891 citations

Hit Papers

1 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Possible association of Bifidobacterium and Lactobacillus in the gut microbiota of patients with major depressive disorder

2016 447 citations Emiko Aizawa, Hirokazu Tsuji et al. Journal of Affective Disorders profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Norie Koga Japan	9	474	472	256	152	123	12	906
Viktoriya L. Nikolova United Kingdom	12	497 1.0×	377 0.8×	234 0.9×	89 0.6×	163 1.3×	18	943
Anastasiya Slyepchenko Canada	12	326 0.7×	291 0.6×	247 1.0×	98 0.6×	120 1.0×	17	864
Xiaogang Zhong China	16	579 1.2×	566 1.2×	299 1.2×	162 1.1×	74 0.6×	44	1.0k
Siwen Gui China	19	887 1.9×	825 1.7×	454 1.8×	211 1.4×	129 1.0×	43	1.5k
Jason Nguyen Australia	10	363 0.8×	257 0.5×	474 1.9×	95 0.6×	121 1.0×	12	1.4k
Carra A. Simpson Australia	9	787 1.7×	541 1.1×	410 1.6×	131 0.9×	83 0.7×	12	1.2k
Emiko Aizawa Japan	7	449 0.9×	360 0.8×	241 0.9×	78 0.5×	91 0.7×	9	785
Leszek Rudzki Poland	8	576 1.2×	462 1.0×	300 1.2×	136 0.9×	93 0.8×	9	900
Christina Iorio United States	9	325 0.7×	178 0.4×	157 0.6×	86 0.6×	116 0.9×	10	716
Sigrid Breit Switzerland	7	323 0.7×	206 0.4×	203 0.8×	52 0.3×	119 1.0×	18	907

Countries citing papers authored by Norie Koga

Since Specialization

Citations

This map shows the geographic impact of Norie Koga's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Norie Koga with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Norie Koga more than expected).

Fields of papers citing papers by Norie Koga

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Norie Koga. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Norie Koga. The network helps show where Norie Koga may publish in the future.

Co-authorship network of co-authors of Norie Koga

This figure shows the co-authorship network connecting the top 25 collaborators of Norie Koga. A scholar is included among the top collaborators of Norie Koga based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Norie Koga. Norie Koga is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

12 of 12 papers shown

Koga, Norie, et al.. (2022). Simultaneous monitoring of activity and heart rate variability in depressed patients: A pilot study using a wearable monitor for 3 consecutive days. Neuropsychopharmacology Reports. 42(4). 457–467. 5 indexed citations

Koga, Norie, Fuyuko Yoshida, Kotaro Hattori, et al.. (2019). Altered polyunsaturated fatty acid levels in relation to proinflammatory cytokines, fatty acid desaturase genotype, and diet in bipolar disorder. Translational Psychiatry. 9(1). 208–208. 29 indexed citations

Aizawa, Emiko, Hirokazu Tsuji, Takashi Asahara, et al.. (2019). Bifidobacterium and Lactobacillus Counts in the Gut Microbiota of Patients With Bipolar Disorder and Healthy Controls. Frontiers in Psychiatry. 9. 730–730. 83 indexed citations

Hori, Hiroaki, Toshiya Teraishi, Anna Nagashima, et al.. (2017). A personality-based latent class typology of outpatients with major depressive disorder: association with symptomatology, prescription pattern and social function. Journal of Affective Disorders. 217. 8–15. 7 indexed citations

Ogawa, Shintaro, Norie Koga, Kotaro Hattori, et al.. (2017). Plasma amino acid profile in major depressive disorder: Analyses in two independent case-control sample sets. Journal of Psychiatric Research. 96. 23–32. 56 indexed citations

Hori, Hiroaki, Norie Koga, Shinsuke Hidese, et al.. (2016). 24-h activity rhythm and sleep in depressed outpatients. Journal of Psychiatric Research. 77. 27–34. 68 indexed citations

Aizawa, Emiko, Hirokazu Tsuji, Takashi Asahara, et al.. (2016). Possible association of Bifidobacterium and Lactobacillus in the gut microbiota of patients with major depressive disorder. Journal of Affective Disorders. 202. 254–257. 447 indexed citations breakdown →

Ogawa, Shintaro, Takashi Fujii, Norie Koga, et al.. (2014). PlasmaL-Tryptophan Concentration in Major Depressive Disorder. The Journal of Clinical Psychiatry. 75(9). e906–e915. 138 indexed citations

Hori, Hiroaki, Noriko Yamamoto, Toshiya Teraishi, et al.. (2014). Cognitive effects of the ANK3 risk variants in patients with bipolar disorder and healthy individuals. Journal of Affective Disorders. 158. 90–96. 15 indexed citations

10.

Hori, Hiroaki, Toshiya Teraishi, Miho Ota, et al.. (2013). Psychological coping in depressed outpatients: Association with cortisol response to the combined dexamethasone/CRH test. Journal of Affective Disorders. 152-154. 441–447. 24 indexed citations

11.

Kunugi, Hiroshi, Norie Koga, Takamasa Noda, et al.. (2013). Validation of computer‐administered clinical rating scale: Hamilton Depression Rating Scale assessment with Interactive Voice Response technology – Japanese version. Psychiatry and Clinical Neurosciences. 67(4). 253–258. 5 indexed citations

12.

Sasayama, Daimei, Hiroaki Hori, Toshiya Teraishi, et al.. (2011). Difference in Temperament and Character Inventory scores between depressed patients with bipolar II and unipolar major depressive disorders. Journal of Affective Disorders. 132(3). 319–324. 29 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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