Masaaki Iwata

6.4k total citations · 1 hit paper
63 papers, 4.9k citations indexed

About

Masaaki Iwata is a scholar working on Biological Psychiatry, Behavioral Neuroscience and Cellular and Molecular Neuroscience. According to data from OpenAlex, Masaaki Iwata has authored 63 papers receiving a total of 4.9k indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Biological Psychiatry, 19 papers in Behavioral Neuroscience and 17 papers in Cellular and Molecular Neuroscience. Recurrent topics in Masaaki Iwata's work include Tryptophan and brain disorders (20 papers), Stress Responses and Cortisol (19 papers) and Intensive Care Unit Cognitive Disorders (15 papers). Masaaki Iwata is often cited by papers focused on Tryptophan and brain disorders (20 papers), Stress Responses and Cortisol (19 papers) and Intensive Care Unit Cognitive Disorders (15 papers). Masaaki Iwata collaborates with scholars based in Japan and United States. Masaaki Iwata's co-authors include Ronald S. Duman, Xiaoyuan Li, Nanxin Li, Mounira Banasr, George K. Aghajanian, Boyoung Lee, Rongjian Liu, Jason M. Dwyer, Kristie T. Ota and Yukihiko Shirayama and has published in prestigious journals such as Science, Nature Medicine and SHILAP Revista de lepidopterología.

In The Last Decade

Masaaki Iwata

59 papers receiving 4.8k citations

Hit Papers

mTOR-Dependent Synapse Formation Underlies the Rapid Anti... 2010 2026 2015 2020 2010 500 1000 1.5k 2.0k
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.

  1. mTOR-Dependent Synapse Formation Underlies the Rapid Antidepressant Effects of NMDA Antagonists
    2010 2.2k citations Nanxin Li, Boyoung Lee et al. Science profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Masaaki Iwata Japan 19 2.4k 1.8k 1.5k 1.3k 955 63 4.9k
Yukihiko Shirayama Japan 40 2.3k 1.0× 3.0k 1.7× 1.3k 0.9× 1.6k 1.3× 1.7k 1.7× 122 6.5k
Peixiong Yuan United States 38 2.0k 0.8× 2.0k 1.1× 1.6k 1.1× 864 0.7× 1.7k 1.8× 62 5.6k
Sâmia Joca Brazil 36 988 0.4× 1.6k 0.9× 1.7k 1.1× 829 0.7× 694 0.7× 128 4.2k
Cornelius Schüle Germany 42 1.2k 0.5× 1.4k 0.8× 898 0.6× 1.5k 1.2× 879 0.9× 126 5.1k
Maurizio Popoli Italy 47 2.6k 1.1× 3.3k 1.9× 1.4k 0.9× 2.3k 1.9× 1.7k 1.8× 149 7.6k
José Javier Miguel-Hidalgo United States 33 1.9k 0.8× 2.4k 1.4× 707 0.5× 1.2k 0.9× 1.1k 1.2× 91 5.4k
Bruno P. Guiard France 36 1.1k 0.4× 2.7k 1.5× 858 0.6× 1.0k 0.8× 1.8k 1.8× 97 5.5k
Ioline D. Henter United States 40 2.0k 0.8× 1.2k 0.7× 1.9k 1.3× 599 0.5× 605 0.6× 81 4.8k
Gabriel R. Fries United States 42 2.3k 1.0× 1.1k 0.6× 716 0.5× 963 0.8× 1.2k 1.3× 144 5.8k
Panos Zanos United States 29 2.2k 0.9× 2.1k 1.2× 2.7k 1.8× 670 0.5× 649 0.7× 71 4.8k

Countries citing papers authored by Masaaki Iwata

Since Specialization
Citations

This map shows the geographic impact of Masaaki Iwata'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 Masaaki Iwata with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Masaaki Iwata more than expected).

Fields of papers citing papers by Masaaki Iwata

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Masaaki Iwata. 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 Masaaki Iwata. The network helps show where Masaaki Iwata may publish in the future.

Co-authorship network of co-authors of Masaaki Iwata

This figure shows the co-authorship network connecting the top 25 collaborators of Masaaki Iwata. A scholar is included among the top collaborators of Masaaki Iwata 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 Masaaki Iwata. Masaaki Iwata is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Yamanishi, Kyosuke, et al.. (2025). The age‐related susceptibility to postoperative delirium quantified by bispectral electroencephalography correlates with postoperative delirium‐like behavior in mice. Psychiatry and Clinical Neurosciences Reports. 4(3). e70142–e70142. 1 indexed citations
2.
3.
Yamanishi, Kyosuke, et al.. (2024). Lipopolysaccharide-Induced Delirium-Like Behavior and Microglial Activation in Mice Correlate With Bispectral Electroencephalography. The Journals of Gerontology Series A. 79(12). 2 indexed citations
4.
Yamanashi, Takehiko, Akihiko Miura, Manabu Yamamoto, et al.. (2024). The Genome-wide DNA methylation changes in gastrointestinal surgery patients with and without postoperative delirium: Evidence of immune process in its pathophysiology. Journal of Psychiatric Research. 177. 249–255.
5.
Yamanashi, Takehiko, Taku Saito, Kyosuke Yamanishi, et al.. (2024). Epigenetic signals associated with delirium replicated across four independent cohorts. Translational Psychiatry. 14(1). 275–275.
6.
7.
Kato, Masaki, Hikaru Hori, Takeshi Inoue, et al.. (2020). Discontinuation of antidepressants after remission with antidepressant medication in major depressive disorder: a systematic review and meta-analysis. Molecular Psychiatry. 26(1). 118–133. 88 indexed citations
8.
Setoyama, Daiki, Atsuo Yoshino, Masahiro Takamura, et al.. (2020). Personality classification enhances blood metabolome analysis and biotyping for major depressive disorders: two-species investigation. Journal of Affective Disorders. 279. 20–30. 9 indexed citations
9.
Iwata, Masaaki & Koichi Kaneko. (2020). Non‐24‐hour sleep‐wake disorder successfully treated with the combination of ramelteon and suvorexant in a case of autism spectrum disorder. Neuropsychopharmacology Reports. 40(4). 383–387. 3 indexed citations
10.
Pu, Shenghong, Kazuyuki Nakagome, Takehiko Yamanashi, et al.. (2018). Comparison of prefrontal hemodynamic responses and cognitive deficits between adult patients with autism spectrum disorder and schizophrenia. Schizophrenia Research. 206. 420–427. 7 indexed citations
11.
12.
Pu, Shenghong, et al.. (2017). Association of fronto-temporal function with cognitive ability in schizophrenia. Scientific Reports. 7(1). 42858–42858. 10 indexed citations
13.
Wohleb, Eric S., Tina Franklin, Masaaki Iwata, & Ronald S. Duman. (2016). Integrating neuroimmune systems in the neurobiology of depression. Nature reviews. Neuroscience. 17(8). 497–511. 477 indexed citations
14.
Iwata, Masaaki, Hisahito Ishida, Koichi Kaneko, & Yukihiko Shirayama. (2016). Learned helplessness activates hippocampal microglia in rats: A potential target for the antidepressant imipramine. Pharmacology Biochemistry and Behavior. 150-151. 138–146. 24 indexed citations
15.
Pu, Shenghong, Kazuyuki Nakagome, Takeshi Yamada, et al.. (2015). Suicidal ideation is associated with reduced prefrontal activation during a verbal fluency task in patients with major depressive disorder. Journal of Affective Disorders. 181. 9–17. 75 indexed citations
16.
Iwata, Masaaki, Kristie T. Ota, Xiaoyuan Li, et al.. (2015). Psychological Stress Activates the Inflammasome via Release of Adenosine Triphosphate and Stimulation of the Purinergic Type 2X7 Receptor. Biological Psychiatry. 80(1). 12–22. 310 indexed citations
17.
Li, Nanxin, Boyoung Lee, Rongjian Liu, et al.. (2010). mTOR-Dependent Synapse Formation Underlies the Rapid Antidepressant Effects of NMDA Antagonists. Science. 329(5994). 959–964. 2240 indexed citations breakdown →
18.
Iwata, Masaaki, Yukihiko Shirayama, Hisahito Ishida, & R Kawahara. (2006). Hippocampal synapsin I, growth-associated protein-43, and microtubule-associated protein-2 immunoreactivity in learned helplessness rats and antidepressant-treated rats. Neuroscience. 141(3). 1301–1313. 49 indexed citations
19.
Fukumoto, Makoto, et al.. (2005). Effects of acute administration of methamphetamine on Narp mRNA in rat brain. Addiction Biology. 10(3). 257–259. 2 indexed citations
20.
Shirayama, Yukihiko, Hisahito Ishida, Masaaki Iwata, et al.. (2004). Stress increases dynorphin immunoreactivity in limbic brain regions and dynorphin antagonism produces antidepressant‐like effects. Journal of Neurochemistry. 90(5). 1258–1268. 255 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Yukihiko Shirayama Breakdown of academic impact, for papers by Peixiong Yuan Breakdown of academic impact, for papers by Sâmia Joca Breakdown of academic impact, for papers by Cornelius Schüle Breakdown of academic impact, for papers by Maurizio Popoli Breakdown of academic impact, for papers by José Javier Miguel-Hidalgo Breakdown of academic impact, for papers by Bruno P. Guiard Breakdown of academic impact, for papers by Ioline D. Henter Breakdown of academic impact, for papers by Gabriel R. Fries Breakdown of academic impact, for papers by Panos Zanos
Rankless by CCL
2026