Yoshihisa Oka

505 total citations
18 papers, 420 citations indexed

About

Yoshihisa Oka is a scholar working on Neurology, Cellular and Molecular Neuroscience and Surgery. According to data from OpenAlex, Yoshihisa Oka has authored 18 papers receiving a total of 420 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Neurology, 5 papers in Cellular and Molecular Neuroscience and 3 papers in Surgery. Recurrent topics in Yoshihisa Oka's work include Intracranial Aneurysms: Treatment and Complications (8 papers), Cerebrospinal fluid and hydrocephalus (4 papers) and Moyamoya disease diagnosis and treatment (3 papers). Yoshihisa Oka is often cited by papers focused on Intracranial Aneurysms: Treatment and Complications (8 papers), Cerebrospinal fluid and hydrocephalus (4 papers) and Moyamoya disease diagnosis and treatment (3 papers). Yoshihisa Oka collaborates with scholars based in Japan and United States. Yoshihisa Oka's co-authors include Saburo Sakaki, Yoshiaki Kumon, Kanehisa Kohno, Shiro Ohue, Shinsuke Ohta, Seishi Matsui, Shinji Iwata, Hironobu Harada, Kou Nakagawa and Kazuhiko Sadamoto and has published in prestigious journals such as Journal of Cerebral Blood Flow & Metabolism, Neurosurgery and Neurologia medico-chirurgica.

In The Last Decade

Yoshihisa Oka

17 papers receiving 407 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Yoshihisa Oka Japan 9 209 155 146 84 57 18 420
D. Legars France 10 234 1.1× 93 0.6× 100 0.7× 40 0.5× 66 1.2× 20 402
Ryunosuke Uranishi Japan 13 331 1.6× 76 0.5× 35 0.2× 62 0.7× 42 0.7× 38 491
Alberto Romano Italy 12 299 1.4× 185 1.2× 41 0.3× 66 0.8× 26 0.5× 24 561
Luis J. Mejico United States 14 324 1.6× 55 0.4× 97 0.7× 46 0.5× 83 1.5× 29 613
Toussaint A. Leclercq United States 12 213 1.0× 177 1.1× 129 0.9× 24 0.3× 22 0.4× 21 495
V. Braun Germany 12 117 0.6× 141 0.9× 45 0.3× 73 0.9× 13 0.2× 27 410
Tai-Hyoung Cho South Korea 11 80 0.4× 176 1.1× 203 1.4× 25 0.3× 18 0.3× 16 412
Yongjie Ma China 11 382 1.8× 152 1.0× 59 0.4× 37 0.4× 50 0.9× 52 646
Yasser Orz Saudi Arabia 12 239 1.1× 87 0.6× 112 0.8× 131 1.6× 40 0.7× 33 426
Saburo Nakamura Japan 12 123 0.6× 87 0.6× 26 0.2× 113 1.3× 38 0.7× 43 451

Countries citing papers authored by Yoshihisa Oka

Since Specialization
Citations

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

Fields of papers citing papers by Yoshihisa Oka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Yoshihisa Oka

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

All Works

18 of 18 papers shown
1.
Kumon, Yoshiaki, Shiro Ohue, Yoshihisa Oka, et al.. (2003). Clinical Significance of Neuropsychological Evaluation for Surgical Treatment of Unruptured Cerebral Aneurysms.. Surgery for Cerebral Stroke. 31(6). 436–441. 1 indexed citations
2.
Ohue, Shiro, Yoshihisa Oka, Yoshiaki Kumon, et al.. (2003). Importance of neuropsychological evaluation after surgery in patients with unruptured cerebral aneurysms. Surgical Neurology. 59(4). 271–277. 40 indexed citations
3.
Oka, Yoshihisa, et al.. (2002). [Assessment of hemodynamics of meningioma with dynamic MR imaging].. PubMed. 54(7). 589–93. 2 indexed citations
4.
Oka, Yoshihisa, Kanehisa Kohno, Keiji Kohno, et al.. (2001). Secondary Spinal Arachnoid Cyst following Spontaneous Spinal Subdural Hematoma associated with Subarachnoid Hemorrhage : A Case Report. Japanese Journal of Neurosurgery. 10(3). 179–184. 1 indexed citations
5.
Oka, Yoshihisa, et al.. (2000). Transvenous Embolization of Carotid-Cavernous Sinus Fistula Associated with a Primitive Trigeminal Artery. Case Report.. Neurologia medico-chirurgica. 40(1). 61–64. 26 indexed citations
6.
Iwata, Shinji, Kou Nakagawa, Hironobu Harada, et al.. (1999). Endothelial Nitric Oxide Synthase Expression in Tumor Vasculature Is Correlated with Malignancy in Human Supratentorial Astrocytic Tumors. Neurosurgery. 45(1). 24–29. 29 indexed citations
7.
Iwata, Shinji, Kou Nakagawa, Hironobu Harada, et al.. (1999). Endothelial Nitric Oxide Synthase Expression in Tumor Vasculature Is Correlated with Malignancy in Human Supratentorial Astrocytic Tumors. Neurosurgery. 45(1). 24–24. 5 indexed citations
8.
Oka, Yoshihisa, Shiro Ohue, Kanehisa Kohno, et al.. (1998). Cognitive Outcome after Surgical Treatment of Ruptured Intracranial Aneurysms. Surgery for Cerebral Stroke. 26(2). 96–100. 4 indexed citations
9.
Kohno, Kanehisa, et al.. (1998). Cerebral Blood Flow Measurement as an Indicator for an Indirect Revascularization Procedure for Adult Patients with Moyamoya Disease. Neurosurgery. 42(4). 752–756. 39 indexed citations
10.
Kumon, Yoshiaki, et al.. (1997). Asymptomatic, Unruptured Carotid-Ophthalmic Artery Aneurysms: Angiographical Differentiation of Each Type, Operative Results, and Indications. Surgical Neurology. 48(5). 465–472. 62 indexed citations
11.
12.
Kohno, Kanehisa, Yoshiaki Kumon, Yoshihisa Oka, et al.. (1997). Evaluation of prognostic factors following expansive laminoplasty for cervical spinal stenotic myelopathy. Surgical Neurology. 48(3). 237–245. 133 indexed citations
13.
Kohno, Kanehisa, Yoshihisa Oka, Shiro Ohue, et al.. (1997). Evaluation of Long-term Prognosis and Cerebral Blood Flow in Adult Patients with Moyamoya Disease with and without Vascular Reconstructive Surgery. Japanese Journal of Neurosurgery. 6(7). 456–463.
14.
Igase, Keiji, et al.. (1996). Usefulness of Thallium-201 Single Photon Emission Computed Tomography to Quantify the Malignancy Grade of Brain Tumors. Neurologia medico-chirurgica. 36(7). 434–439. 6 indexed citations
15.
Oka, Yoshihisa, et al.. (1996). Cerebral Cysticercosis Manifesting as Hydrocephalus —Case Report—. Neurologia medico-chirurgica. 36(9). 654–658. 9 indexed citations
16.
Oka, Yoshihisa, et al.. (1996). Protein Synthesis and Immunoreactivities of Contraction-Related Proteins in Smooth Muscle Cells of Canine Basilar Artery after Experimental Subarachnoid Hemorrhage. Journal of Cerebral Blood Flow & Metabolism. 16(6). 1335–1344. 24 indexed citations
17.
Oka, Yoshihisa, Yoshiaki Kumon, Kanehisa Kohno, Masahiro Saitoh, & Saburo Sakaki. (1996). Treatment of Suprasellar Arachnoid Cyst —Two Case Reports—. Neurologia medico-chirurgica. 36(10). 721–724. 6 indexed citations
18.
Oka, Yoshihisa, et al.. (1994). Chronic Subdural Hematoma Associated with Middle Fossa Arachnoid Cysts —Three Case Reports—. Neurologia medico-chirurgica. 34(2). 95–99. 32 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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