Keiichiro Toma

3.0k total citations · 1 hit paper
37 papers, 2.3k citations indexed

About

Keiichiro Toma is a scholar working on Cognitive Neuroscience, Neurology and Neurology. According to data from OpenAlex, Keiichiro Toma has authored 37 papers receiving a total of 2.3k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Cognitive Neuroscience, 9 papers in Neurology and 6 papers in Neurology. Recurrent topics in Keiichiro Toma's work include EEG and Brain-Computer Interfaces (11 papers), Motor Control and Adaptation (7 papers) and Transcranial Magnetic Stimulation Studies (7 papers). Keiichiro Toma is often cited by papers focused on EEG and Brain-Computer Interfaces (11 papers), Motor Control and Adaptation (7 papers) and Transcranial Magnetic Stimulation Studies (7 papers). Keiichiro Toma collaborates with scholars based in Japan, United States and United Kingdom. Keiichiro Toma's co-authors include Mark Hallett, Takashi Hanakawa, Ilka Immisch, Michael A. Dimyan, Peter van Gelderen, Tatsuya Mima, Hiroshi Shibasaki, Hidenao Fukuyama, Tomohisa Okada and Takashi Nagamine and has published in prestigious journals such as Journal of Neuroscience, Nature Neuroscience and NeuroImage.

In The Last Decade

Keiichiro Toma

35 papers receiving 2.3k citations

Hit Papers

align trajectories

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.

Functional Properties of Brain Areas Associated With Motor Execution and Imagery

2003 530 citations Takashi Hanakawa, Ilka Immisch et al. Journal of Neurophysiology profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Keiichiro Toma Japan	20	1.6k	511	348	334	292	37	2.3k
Julie A. Bobholz United States	16	1.6k 1.0×	540 1.1×	146 0.4×	256 0.8×	204 0.7×	28	3.0k
G. Lindinger Austria	31	2.5k 1.6×	330 0.6×	339 1.0×	335 1.0×	221 0.8×	84	3.1k
Rudolf Töpper Germany	36	1.9k 1.2×	1.3k 2.5×	305 0.9×	326 1.0×	174 0.6×	72	3.3k
Roland Sparing Germany	30	2.2k 1.3×	1.8k 3.6×	358 1.0×	376 1.1×	201 0.7×	61	3.1k
Michio Tanaka Japan	24	1.9k 1.2×	291 0.6×	197 0.6×	854 2.6×	150 0.5×	99	2.9k
Erika Kirveskari Finland	23	1.0k 0.6×	474 0.9×	185 0.5×	573 1.7×	207 0.7×	51	2.0k
Patrizia Baraldi Italy	21	1.8k 1.1×	241 0.5×	173 0.5×	687 2.1×	386 1.3×	52	2.9k
Kader Boulanouar France	23	1.4k 0.9×	451 0.9×	183 0.5×	120 0.4×	261 0.9×	38	2.4k
Minoru Hoshiyama Japan	32	2.0k 1.2×	740 1.4×	273 0.8×	131 0.4×	80 0.3×	72	2.6k
Marco Sandrini Italy	26	1.9k 1.2×	1.5k 2.9×	257 0.7×	220 0.7×	165 0.6×	44	2.5k

Countries citing papers authored by Keiichiro Toma

Since Specialization

Citations

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

Fields of papers citing papers by Keiichiro Toma

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keiichiro Toma

This figure shows the co-authorship network connecting the top 25 collaborators of Keiichiro Toma. A scholar is included among the top collaborators of Keiichiro Toma 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 Keiichiro Toma. Keiichiro Toma 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

Toma, Keiichiro, et al.. (2024). Two cases of COVID-19-related hemorrhagic shock and encephalopathy syndrome with different outcomes. 2(3). 100024–100024.

Katsura, Morihiro, Yutaka Kondo, Hideto Yasuda, et al.. (2022). Therapeutic strategies for pseudoaneurysm following blunt liver and spleen injuries: A multicenter cohort study in the pediatric population. The Journal of Trauma: Injury, Infection, and Critical Care. 94(3). 433–442. 7 indexed citations

Morishima, Yosuke, Rei Akaishi, Yohei Yamada, et al.. (2008). Task-specific signal transmission from prefrontal cortex in visual selective attention. Nature Neuroscience. 12(1). 85–91. 147 indexed citations

Fujita, Takashi, et al.. (2008). Calcium enhanced delivery of tetraarginine-PEG-lipid-coated DNA/protamine complexes. International Journal of Pharmaceutics. 368(1-2). 186–192. 14 indexed citations

Aso, Toshihiko, Takashi Hanakawa, Kayako Matsuo, et al.. (2007). Subregions of human parietal cortex selectively encoding object orientation. Neuroscience Letters. 415(3). 225–230. 6 indexed citations

Thuy, Dinh Ha Duy, Kayako Matsuo, Kimihiro Nakamura, et al.. (2004). Implicit and explicit processing of kanji and kana words and non-words studied with fMRI. NeuroImage. 23(3). 878–889. 61 indexed citations

Matsumoto, Riki, Akio Ikeda, Takashi Nagamine, et al.. (2004). Subregions of human MT complex revealed by comparative MEG and direct electrocorticographic recordings. Clinical Neurophysiology. 115(9). 2056–2065. 11 indexed citations

Nakai, Toshiharu, Chikako Kato, Gary H. Glover, et al.. (2003). A functional magnetic resonance imaging study of internal modulation of an external visual cue for motor execution. Brain Research. 968(2). 238–247. 16 indexed citations

Matsuo, Kayako, Chikako Kato, Chika Sumiyoshi, et al.. (2003). Discrimination of Exner's area and the frontal eye field in humans – functional magnetic resonance imaging during language and saccade tasks. Neuroscience Letters. 340(1). 13–16. 31 indexed citations

10.

Mima, Tatsuya, Tatsuhide Oga, John C. Rothwell, et al.. (2003). Short-term high-frequency transcutaneous electrical nerve stimulation decreases human motor cortex excitability. Neuroscience Letters. 355(1-2). 85–88. 72 indexed citations

11.

Toma, Keiichiro, et al.. (2003). The role of the human supplementary motor area in reactive motor operation. Neuroscience Letters. 344(3). 177–180. 10 indexed citations

12.

Hanakawa, Takashi, Ilka Immisch, Keiichiro Toma, et al.. (2003). Functional Properties of Brain Areas Associated With Motor Execution and Imagery. Journal of Neurophysiology. 89(2). 989–1002. 530 indexed citations breakdown →

13.

Fujiwara, Naohito, Makoto Imai, Takashi Nagamine, et al.. (2002). Second somatosensory area (SII) plays a significant role in selective somatosensory attention. Cognitive Brain Research. 14(3). 389–397. 49 indexed citations

14.

Oga, Tatsuhide, Manabu Honda, Keiichiro Toma, et al.. (2002). Abnormal cortical mechanisms of voluntary muscle relaxation in patients with writer’s cramp: an fMRI study. Brain. 125(4). 895–903. 89 indexed citations

15.

Mima, Tatsuya, Keiichiro Toma, Beena Koshy, & Mark Hallett. (2001). Coherence Between Cortical and Muscular Activities After Subcortical Stroke. Stroke. 32(11). 2597–2601. 150 indexed citations

16.

Toma, Keiichiro, Takashi Nagamine, Shogo Yazawa, et al.. (2000). Desynchronization and synchronization of central 20-Hz rhythms associated with voluntary muscle relaxation: a magnetoencephalographic study. Experimental Brain Research. 134(4). 417–425. 29 indexed citations

17.

Nagahama, Yasuhiro, Tomohisa Okada, Yukinori Katsumi, et al.. (1999). Transient Neural Activity in the Medial Superior Frontal Gyrus and Precuneus Time Locked with Attention Shift between Object Features. NeuroImage. 10(2). 193–199. 173 indexed citations

18.

Yazawa, Shogo, Akio Ikeda, Ryuji Kaji, et al.. (1999). Abnormal cortical processing of voluntary muscle relaxation in patients with focal hand dystonia studied by movement-related potentials. Brain. 122(7). 1357–1366. 60 indexed citations

19.

Toma, Keiichiro. (1994). Flexibility of Sugar Chains and Molecular Dynamics Simulations.. Trends in Glycoscience and Glycotechnology. 6(27). 93–94. 1 indexed citations

20.

Toma, Keiichiro, Shigeyoshi Yamamoto, Yoshihiro Deyashiki, & Kazuo Suzuki. (1987). Three-dimensional structure of protein C inhibitor predicted from structure of α1-antitrypsin with computer graphics. Protein Engineering Design and Selection. 1(6). 471–475. 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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