Koichi Otani

4.6k total citations
204 papers, 3.5k citations indexed

About

Koichi Otani is a scholar working on Psychiatry and Mental health, Clinical Psychology and Pharmacology. According to data from OpenAlex, Koichi Otani has authored 204 papers receiving a total of 3.5k indexed citations (citations by other indexed papers that have themselves been cited), including 101 papers in Psychiatry and Mental health, 44 papers in Clinical Psychology and 40 papers in Pharmacology. Recurrent topics in Koichi Otani's work include Schizophrenia research and treatment (42 papers), Bipolar Disorder and Treatment (33 papers) and Treatment of Major Depression (31 papers). Koichi Otani is often cited by papers focused on Schizophrenia research and treatment (42 papers), Bipolar Disorder and Treatment (33 papers) and Treatment of Major Depression (31 papers). Koichi Otani collaborates with scholars based in Japan, Sweden and United States. Koichi Otani's co-authors include Akihito Suzuki, Sunao Kaneko, Tsuyoshi Kondo, Yoshihiko Matsumoto, Kazuo Mihara, Tadashi Ohkubo, Mitsuhiro Kamata, Kazunobu Sugawara, Norio Yasui and Toshiaki Aoshima and has published in prestigious journals such as SHILAP Revista de lepidopterología, Biological Psychiatry and New Phytologist.

In The Last Decade

Koichi Otani

197 papers receiving 3.4k citations

Peers

Countries citing papers authored by Koichi Otani

Since Specialization

Citations

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

Fields of papers citing papers by Koichi Otani

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koichi Otani

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

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Effect of cerebrospinal fluid area mask correction on 123I-FP-CIT SPECT images in idiopathic normal pressure hydrocephalus 2023 ·BMC Medical Imaging ·(unknown), Ryota Kobayashi, Chifumi Iseki, (unknown), Daichi Morioka, Koichi Otani, Yasuyuki Ohta, Yukihiko Sonoda, Koji Suzuki, Masafumi Kanoto	0
2	Syntactic Impairment Associated with Hypoperfusion in the Left Middle and Inferior Frontal Gyri after Right Cerebellar Hemorrhage 2023 ·Internal Medicine ·(unknown), Ryota Kobayashi, Kayoko Yokoi, (unknown), Ryusaku Hashimoto, Kazutaka Sakamoto, (unknown), Koichi Otani, Kazumi Hirayama	0
3	In vivo [18F]THK-5351 imaging detected reactive astrogliosis in argyrophilic grain disease with comorbid pathology: A clinicopathological study 2023 ·Journal of Neuropathology & Experimental Neurology ·Ryota Kobayashi, Tadaho Nakamura, Fumito Naganuma, Ryuichi Harada, Daichi Morioka, Masafumi Kanoto, Shozo Furumoto, Yukitsuka Kudo, (unknown), Koichi Otani, Mitsuru Futakuchi, Shinobu Kawakatsu, Nobuyuki Okamura	2
4	Clinicopathological diversity of semantic dementia: Comparisons of patients with early‐onset versus late‐onset, left‐sided versus right‐sided temporal atrophy, and TDP‐type A versus type C pathology 2022 ·Neuropathology ·Shinobu Kawakatsu, Ryota Kobayashi, Daichi Morioka, Hiroshi Hayashi, (unknown), (unknown), Rintaro Ohe, Mitsuru Futakuchi, Koichi Otani	5
5	Valosin-containing protein Asp395Gly mutation in a patient with frontotemporal dementia: a case report 2022 ·BMC Neurology ·Ryota Kobayashi, (unknown), Shinobu Kawakatsu, Chifumi Iseki, (unknown), Shingo Koyama, Daichi Morioka, Hiroyuki Ishiura, Jun Mitsui, Yasuyuki Ohta, Shoji Tsuji, Tatsushi Toda, Koichi Otani	3
6	Comparing Medial Temporal Atrophy Between Early-Onset SemanticDementia and Early-Onset Alzheimer's Disease Using Voxel-Based Morphometry:A Multicenter MRI Study 2022 ·Current Alzheimer Research ·Ryota Kobayashi, Hiroshi Hayashi, Shinobu Kawakatsu, (unknown), Daichi Morioka, (unknown), (unknown), Kazutaka Sakamoto, Masafumi Kanoto, Koichi Otani	3
7	Limbic‐predominant age‐related TDP‐43 encephalopathy characterised by frontotemporal dementia‐like behavioural symptoms 2022 ·Psychogeriatrics ·Ryota Kobayashi, Shinobu Kawakatsu, Daichi Morioka, Hiroshi Hayashi, (unknown), (unknown), Koichi Otani	2
8	Comparison of the decreases in regional cerebral blood flow in the posterior cingulate cortex, precuneus, and parietal lobe between suspected non‐Alzheimer's disease pathophysiology and Alzheimer's disease 2021 ·Psychogeriatrics ·Hiroshi Hayashi, Ryota Kobayashi, Shinobu Kawakatsu, (unknown), Daichi Morioka, Koichi Otani	6
9	Trimodal hallucination and delusion after right thalamomesencephalic infarction 2021 ·Psychogeriatrics ·Kazutaka Sakamoto, Ryota Kobayashi, Kayoko Yokoi, (unknown), (unknown), (unknown), Masayuki Kimura, Shinobu Kawakatsu, Koichi Otani, Kazumi Hirayama	0
10	Clinicopathological heterogeneity of Alzheimer's disease with pure Alzheimer's disease pathology: Cases associated with dementia with Lewy bodies, very early‐onset dementia, and primary progressive aphasia 2021 ·Neuropathology ·Shinobu Kawakatsu, Ryota Kobayashi, Hiroshi Hayashi, Daichi Morioka, (unknown), (unknown), Rintaro Ohe, Koichi Otani	6
11	Comparison of Alzheimer’s disease patients and healthy controls in the easy Z-score imaging system with differential image reconstruction methods using SPECT/CT: verification using normal database of our institution 2021 ·Annals of Nuclear Medicine ·(unknown), Ryota Kobayashi, (unknown), Kyosuke Fujita, (unknown), Hiroshi Hayashi, Shinobu Kawakatsu, Koichi Otani, Masafumi Kanoto, Koji Suzuki	3
12	Recognition of the coronavirus disease 2019 pandemic and face mask wearing in patients with Alzheimer's disease: an investigation at a medical centre for dementia in Japan 2020 ·Psychogeriatrics ·Ryota Kobayashi, Hiroshi Hayashi, Shinobu Kawakatsu, Daichi Morioka, (unknown), Masayuki Kimura, Koichi Otani	10
13	Detection of reduced dopamine transporter availability by ¹²³I‐N‐omega‐fluoropropyl‐2‐beta‐carbomethoxy‐3‐beta (4‐iodophenyl) nortropane single‐photon emission computed tomography in a patient of frontotemporal dementia with motor neuron disease 2020 ·Psychogeriatrics ·Ryota Kobayashi, Hiroshi Hayashi, Shinobu Kawakatsu, Hiroki Nagasawa, Shingo Koyama, Kenichi Ishizawa, Koichi Otani	3
14	Drug-Drug Interactions 2013 ·Rinsho yakuri/Japanese Journal of Clinical Pharmacology and Therapeutics ·Koichi Otani	1
15	Inverse correlation between clinical response to paroxetine and plasma drug concentration in patients with major depressive disorders 2011 ·Human Psychopharmacology Clinical and Experimental ·Norio Yasui‐Furukori, Taku Nakagami, Ayako Kaneda, Yoshimasa Inoue, Akihito Suzuki, Koichi Otani, Sunao Kaneko	17
16	A three-factor model of the MADRS in major depressive disorder 2005 ·Depression and Anxiety ·Akihito Suzuki, Toshiaki Aoshima, Takashi Fukasawa, Keizo Yoshida, Hisashi Higuchi, Tetsuo Shimizu, Koichi Otani	67
17	Association between -1438G/A Promoter Polymorphism in the 5-HT<sub>2A</sub> Receptor Gene and Fluvoxamine Response in Japanese Patients with Major Depressive Disorder 2002 ·Neuropsychobiology ·Kazuhiro Sato, Keizo Yoshida, Hitoshi Takahashi, Kenichi Ito, Mitsuhiro Kamata, Hisashi Higuchi, Tetsuo Shimizu, Kunihiko Itoh, Kazuyuki Inoue, Takehiko Tezuka, Toshio Suzuki, Tadashi Ohkubo, Kazunobu Sugawara, Koichi Otani	63
18	Relationship between functional dopamine D2 and D3 receptors gene polymorphisms and neuroleptic malignant syndrome 2002 ·American Journal of Medical Genetics Part B Neuropsychiatric Genetics ·Kazuo Mihara, Tsuyoshi Kondo, Akihito Suzuki, Norio Yasui‐Furukori, Shingo Ono, Akira Sano, (unknown), Koichi Otani, Sunao Kaneko	45
19	Single-Dose Pharmacokinetics and Pharmacodynamics of Oral Triazolam in Relation to Cytochrome P4502C19 (CYP2C19) Activity 1997 ·Therapeutic Drug Monitoring ·Norio Yasui, Koichi Otani, Tadashi Ohkubo, Takako Osanai, Kazunobu Sugawara, Kan Chiba, Takashi Ishizaki, Sunao Kaneko	7
20	Involuntary Movements Associated with Mianserin Treatment 1989 ·The British Journal of Psychiatry ·Koichi Otani, Sunao Kaneko, Yutaka Fukushima, (unknown)	2

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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