Hironobu Ichikawa

1.4k total citations
25 papers, 901 citations indexed

About

Hironobu Ichikawa is a scholar working on Psychiatry and Mental health, Cognitive Neuroscience and Clinical Psychology. According to data from OpenAlex, Hironobu Ichikawa has authored 25 papers receiving a total of 901 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Psychiatry and Mental health, 11 papers in Cognitive Neuroscience and 4 papers in Clinical Psychology. Recurrent topics in Hironobu Ichikawa's work include Attention Deficit Hyperactivity Disorder (13 papers), Autism Spectrum Disorder Research (8 papers) and Bipolar Disorder and Treatment (6 papers). Hironobu Ichikawa is often cited by papers focused on Attention Deficit Hyperactivity Disorder (13 papers), Autism Spectrum Disorder Research (8 papers) and Bipolar Disorder and Treatment (6 papers). Hironobu Ichikawa collaborates with scholars based in Japan, United States and South Korea. Hironobu Ichikawa's co-authors include Hiroshi Mitsushio, Kiyohisa Takahashi, Mizuo Takashima, Yukihiko Shirayama, Kazuhiko Nakamura, Kazuhiko Saito, Toru Nishikawa, Shuzo Watanabe, H. Shibuya and Michio Toru and has published in prestigious journals such as Journal of Clinical Investigation, Brain Research and The Journal of Clinical Psychiatry.

In The Last Decade

Hironobu Ichikawa

23 papers receiving 869 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hironobu Ichikawa Japan 14 415 308 287 269 172 25 901
Mayada Akil United States 14 355 0.9× 223 0.7× 514 1.8× 355 1.3× 156 0.9× 22 1.1k
Mary A. Walker United Kingdom 16 589 1.4× 224 0.7× 274 1.0× 215 0.8× 120 0.7× 27 1.1k
John R. Kelsoe United States 17 300 0.7× 483 1.6× 202 0.7× 271 1.0× 353 2.1× 27 1.1k
Christopher L. Muller United States 10 493 1.2× 186 0.6× 229 0.8× 261 1.0× 276 1.6× 10 929
Edwin J. van den Oord United States 15 281 0.7× 399 1.3× 159 0.6× 341 1.3× 318 1.8× 21 1.2k
S C Bakker Netherlands 10 295 0.7× 340 1.1× 126 0.4× 135 0.5× 152 0.9× 12 782
Cristina Sánchez‐Mora Spain 20 322 0.8× 530 1.7× 255 0.9× 243 0.9× 200 1.2× 47 1.1k
Amy Arnsten United States 14 473 1.1× 300 1.0× 476 1.7× 274 1.0× 49 0.3× 20 1.1k
Zhifeng Zhou United States 13 232 0.6× 118 0.4× 297 1.0× 326 1.2× 114 0.7× 20 839
Chika Sumiyoshi Japan 16 336 0.8× 503 1.6× 235 0.8× 145 0.5× 109 0.6× 39 890

Countries citing papers authored by Hironobu Ichikawa

Since Specialization
Citations

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

Fields of papers citing papers by Hironobu Ichikawa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hironobu Ichikawa

This figure shows the co-authorship network connecting the top 25 collaborators of Hironobu Ichikawa. A scholar is included among the top collaborators of Hironobu Ichikawa 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 Hironobu Ichikawa. Hironobu Ichikawa 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.
Iwanami, Akira, Kazuhiko Saito, Masakazu Fujiwara, Daiki Okutsu, & Hironobu Ichikawa. (2020). Efficacy and Safety of Guanfacine Extended-Release in the Treatment of Attention-Deficit/Hyperactivity Disorder in Adults. The Journal of Clinical Psychiatry. 81(3). 30 indexed citations
2.
Iwanami, Akira, Kazuhiko Saito, Masakazu Fujiwara, Daiki Okutsu, & Hironobu Ichikawa. (2020). Safety and efficacy of guanfacine extended-release in adults with attention-deficit/hyperactivity disorder: an open-label, long-term, phase 3 extension study. BMC Psychiatry. 20(1). 485–485. 15 indexed citations
3.
Ichikawa, Hironobu, et al.. (2019). Phase II/III Study of Lisdexamfetamine Dimesylate in Japanese Pediatric Patients with Attention-Deficit/Hyperactivity Disorder. Journal of Child and Adolescent Psychopharmacology. 30(1). 21–31. 7 indexed citations
4.
Ichikawa, Hironobu, Michio Hiratani, Akihiro Yasuhara, et al.. (2017). An open‐label extension long‐term study of the safety and efficacy of aripiprazole for irritability in children and adolescents with autistic disorder in Japan. Psychiatry and Clinical Neurosciences. 72(2). 84–94. 19 indexed citations
5.
Ichikawa, Hironobu, Katsunaka Mikami, Takashi Okada, et al.. (2016). Aripiprazole in the Treatment of Irritability in Children and Adolescents with Autism Spectrum Disorder in Japan: A Randomized, Double-blind, Placebo-controlled Study. Child Psychiatry & Human Development. 48(5). 796–806. 62 indexed citations
6.
Hirata, Yuko, et al.. (2013). Long-term safety and tolerability of atomoxetine in Japanese adults with attention deficit hyperactivity disorder. Asia-Pacific Psychiatry. 6(3). 292–301. 11 indexed citations
7.
Hirata, Yuko, Paula T. Trzepacz, Albert J. Allen, et al.. (2013). Efficacy and Safety of Atomoxetine Hydrochloride in Asian Adults With ADHD. Journal of Attention Disorders. 21(2). 100–109. 37 indexed citations
8.
Ichikawa, Hironobu. (2012). Medical View of Developmental Disorders. The Japanese Journal of Rehabilitation Medicine. 49(7). 421–427.
9.
Anitha, Ayyappan, Kazuhiko Nakamura, Ismail Thanseem, et al.. (2012). Brain region-specific altered expression and association of mitochondria-related genes in autism. Molecular Autism. 3(1). 12–12. 113 indexed citations
10.
Takahashi, Michihiro, et al.. (2011). An open‐label, dose‐titration tolerability study of atomoxetine hydrochloride in Japanese adults with attention‐deficit/hyperactivity disorder. Psychiatry and Clinical Neurosciences. 65(1). 55–63. 17 indexed citations
11.
Takahashi, Michihiro, Kosuke Yamazaki, Takashi Hayashi, et al.. (2009). A Randomized, Double-Blind, Placebo-Controlled Study of Atomoxetine in Japanese Children and Adolescents with Attention-Deficit/Hyperactivity Disorder. Journal of Child and Adolescent Psychopharmacology. 19(4). 341–350. 32 indexed citations
12.
Ichikawa, Hironobu. (2008). [Developmental disorders and related matters].. PubMed. 110(4). 321–6.
13.
Sadakata, Tetsushi, Miwa Washida, Yoshimi Iwayama, et al.. (2007). Autistic-like phenotypes in Cadps2-knockout mice and aberrant CADPS2 splicing in autistic patients. Journal of Clinical Investigation. 117(4). 931–943. 146 indexed citations
14.
Takahashi, Hiroshi, et al.. (2003). An Epidemiological Study on Japanese Autism concerning Routine Childhood Immunization History. Japanese Journal of Infectious Diseases. 56(3). 114–117. 16 indexed citations
15.
Okawa, Masako, Makoto Uchiyama, Shigeru Ozaki, Kayo Shibui, & Hironobu Ichikawa. (1998). Circadian rhythm sleep disorders in adolescents: Clinical trials of combined treatments based on chronobiology. Psychiatry and Clinical Neurosciences. 52(5). 483–490. 49 indexed citations
16.
Shirayama, Yukihiko, Hiroshi Mitsushio, Mizuo Takashima, Hironobu Ichikawa, & Kiyohisa Takahashi. (1996). Reduction of substance P after chronic antidepressants treatment in the striatum, substantia nigra and amygdala of the rat. Brain Research. 739(1-2). 70–78. 97 indexed citations
17.
Ichikawa, Hironobu, et al.. (1993). Long‐Term Follow‐Up Study of a School Refuser with Non‐24‐Hour Sleep‐Wake Rhythm. Psychiatry and Clinical Neurosciences. 47(2). 437–438. 3 indexed citations
18.
Ichikawa, Hironobu, et al.. (1990). Sleep‐Waking Rhythm Disorders Observed in Five School Refusers. Psychiatry and Clinical Neurosciences. 44(1). 188–188. 3 indexed citations
19.
Ichikawa, Hironobu, Toru Nishikawa, Hiroshi Mitsushio, & Mizuo Takashima. (1988). Habenular modulation of dynorphinergic systems in rat ventral mesencephalon. Peptides. 9(5). 1107–1114. 2 indexed citations
20.
Toru, Michio, Shuzo Watanabe, H. Shibuya, et al.. (1988). Neurotransmitters, receptors and neuropeptides in post‐mortem brains of chronic schizophrenic patients. Acta Psychiatrica Scandinavica. 78(2). 121–137. 170 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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