Ken Ohyama

925 total citations
29 papers, 374 citations indexed

About

Ken Ohyama is a scholar working on Neurology, Rheumatology and Cellular and Molecular Neuroscience. According to data from OpenAlex, Ken Ohyama has authored 29 papers receiving a total of 374 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Neurology, 12 papers in Rheumatology and 10 papers in Cellular and Molecular Neuroscience. Recurrent topics in Ken Ohyama's work include Peripheral Neuropathies and Disorders (12 papers), Hereditary Neurological Disorders (8 papers) and IgG4-Related and Inflammatory Diseases (6 papers). Ken Ohyama is often cited by papers focused on Peripheral Neuropathies and Disorders (12 papers), Hereditary Neurological Disorders (8 papers) and IgG4-Related and Inflammatory Diseases (6 papers). Ken Ohyama collaborates with scholars based in Japan, United Kingdom and Norway. Ken Ohyama's co-authors include Haruki Koike, Gen Sobue, Masahiro Iijima, Yuichi Kawagashira, Masahisa Katsuno, Rina Hashimoto, Mie Takahashi, Ryoji Nishi, Yuki Fukami and M. Watanabe and has published in prestigious journals such as SHILAP Revista de lepidopterología, Neurology and Journal of Neuropathology & Experimental Neurology.

In The Last Decade

Ken Ohyama

28 papers receiving 362 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ken Ohyama Japan 11 141 137 94 88 71 29 374
Franklin A. Marden United States 12 190 1.3× 69 0.5× 99 1.1× 49 0.6× 72 1.0× 19 484
Cynthia Campos Brazil 11 151 1.1× 55 0.4× 124 1.3× 25 0.3× 97 1.4× 33 401
Keith A. Kattner United States 13 180 1.3× 46 0.3× 85 0.9× 99 1.1× 63 0.9× 22 583
Barry M. Rabin United States 6 165 1.2× 52 0.4× 54 0.6× 25 0.3× 21 0.3× 10 321
Taek-Hyun Kwon South Korea 17 245 1.7× 77 0.6× 70 0.7× 19 0.2× 54 0.8× 32 639
Salih Gülşen Türkiye 13 137 1.0× 42 0.3× 98 1.0× 14 0.2× 73 1.0× 50 465
Henri Metz Germany 3 142 1.0× 78 0.6× 183 1.9× 57 0.6× 43 0.6× 5 380
Anthony Jabre United States 11 255 1.8× 29 0.2× 91 1.0× 39 0.4× 57 0.8× 23 552
Ertuğrul Çakır Türkiye 11 141 1.0× 25 0.2× 55 0.6× 17 0.2× 104 1.5× 42 367
Erhan Türkoğlu Türkiye 12 111 0.8× 23 0.2× 29 0.3× 35 0.4× 47 0.7× 39 395

Countries citing papers authored by Ken Ohyama

Since Specialization
Citations

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

Fields of papers citing papers by Ken Ohyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ken Ohyama

This figure shows the co-authorship network connecting the top 25 collaborators of Ken Ohyama. A scholar is included among the top collaborators of Ken Ohyama 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 Ken Ohyama. Ken Ohyama 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.
Koike, Haruki, Ryoji Nishi, Ken Ohyama, et al.. (2022). ANCA-Associated Vasculitic Neuropathies: A Review. Neurology and Therapy. 11(1). 21–38. 28 indexed citations
2.
Ohyama, Ken, et al.. (2022). IgG4-related Inflammatory Pseudotumor with Imaging Findings Similar to Meningioma. Internal Medicine. 62(11). 1665–1669. 1 indexed citations
3.
Ohyama, Ken, et al.. (2020). Clinical Features of Painful Ophthalmoplegia with a High-Intensity Ring Appearance around the Optic Nerve on MRI: A Case Series. SHILAP Revista de lepidopterología. 2020. 1–7. 1 indexed citations
4.
Dougu, Nobuhiro, Ken Ohyama, Toshiyuki Takahashi, et al.. (2020). Two cases of NMOSD with MRI findings mimicking CADASIL. Multiple Sclerosis and Related Disorders. 46. 102532–102532. 1 indexed citations
5.
Ohyama, Ken, M. Watanabe, Takamasa Yokoi, et al.. (2020). Successful treatment of drug-resistant status epilepticus in an adult patient with Mowat-Wilson syndrome: A case report. Epilepsy & Behavior Reports. 14. 100410–100410. 2 indexed citations
6.
Ohyama, Ken, et al.. (2020). Correlation Between Skeletal Muscle Mass Deficit and Poor Functional Outcome in Patients with Acute Ischemic Stroke. Journal of Stroke and Cerebrovascular Diseases. 29(4). 104623–104623. 44 indexed citations
7.
Nakae, Yoshiharu, Mikiko Tada, Misako Kunii, et al.. (2020). Hepatitis B Virus-related Vasculitic Neuropathy in an Inactive Virus Carrier Treated with Intravenous Immunoglobulin. Internal Medicine. 59(23). 3075–3078. 1 indexed citations
8.
Ohyama, Ken, M. Watanabe, Takamasa Yokoi, et al.. (2019). Simultaneous Development of Progressive Multifocal Leukoencephalopathy and Cryptococcal Meningitis during Methotrexate and Infliximab Treatment. Internal Medicine. 58(18). 2703–2709. 4 indexed citations
9.
Ohyama, Ken, Haruki Koike, Rina Hashimoto, et al.. (2016). Intraepidermal nerve fibre density in POEMS (Crow-Fukase) syndrome and the correlation with sural nerve pathology. Journal of the Neurological Sciences. 365. 207–211. 1 indexed citations
10.
Ohyama, Ken, Haruki Koike, Masahiro Iijima, et al.. (2016). IgG4-Related Neuropathy. 1 indexed citations
11.
Hashimoto, Rina, Haruki Koike, Mie Takahashi, et al.. (2015). Uncompacted Myelin Lamellae and Nodal Ion Channel Disruption in POEMS Syndrome. Journal of Neuropathology & Experimental Neurology. 74(12). 1127–1136. 14 indexed citations
12.
Hashimoto, Rina, Haruki Koike, Mie Takahashi, et al.. (2015). Uncompacted Myelin Lamellae and Nodal Ion Channel Disruption in POEMS Syndrome. Journal of Neuropathology & Experimental Neurology. 74(12). 1127–1136. 8 indexed citations
13.
Ohyama, Ken, Haruki Koike, & Gen Sobue. (2015). [Paraneoplastic neuropathy].. PubMed. 73 Suppl 7. 782–7.
14.
Kawagashira, Yuichi, Haruki Koike, Ken Ohyama, et al.. (2014). Axonal loss influences the response to rituximab treatment in neuropathy associated with IgM monoclonal gammopathy with anti-myelin-associated glycoprotein antibody. Journal of the Neurological Sciences. 348(1-2). 67–73. 22 indexed citations
15.
Ohyama, Ken, Haruki Koike, Mie Takahashi, et al.. (2014). Clinicopathological features of neuropathy associated with IgG4-related disease. Rinsho Shinkeigaku. 54(12). 1047–1049. 4 indexed citations
16.
Ohyama, Ken, Haruki Koike, Masahisa Katsuno, et al.. (2014). Muscle atrophy in chronic inflammatory demyelinating polyneuropathy: a computed tomography assessment. European Journal of Neurology. 21(7). 1002–1010. 13 indexed citations
17.
Yokoi, Satoshi, Yuichi Kawagashira, Ken Ohyama, et al.. (2013). Mononeuritis multiplex with tumefactive cellular infiltration in a patient with reactive lymphoid hyperplasia with increased immunoglobulin G4–positive cells. Human Pathology. 45(2). 427–430. 10 indexed citations
18.
Ohyama, Ken, Haruki Koike, Masahiro Iijima, et al.. (2013). IgG4-Related Neuropathy. JAMA Neurology. 70(4). 502–502. 33 indexed citations
19.
Ohyama, Ken, Haruki Koike, Michihito Masuda, et al.. (2013). Autonomic manifestations in acute sensory ataxic neuropathy: A case report. Autonomic Neuroscience. 179(1-2). 155–158. 3 indexed citations
20.
Koike, Haruki, Hitoshi Yoshida, Takahiko Ito, et al.. (2013). Demyelinating Neuropathy and Autoimmune Hemolytic Anemia in a Patient with Pancreatic Cancer. Internal Medicine. 52(15). 1737–1740. 7 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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