This map shows the geographic impact of M Tohyama'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 M Tohyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites M Tohyama more than expected).
This network shows the impact of papers produced by M Tohyama. 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 M Tohyama. The network helps show where M Tohyama may publish in the future.
Co-authorship network of co-authors of M Tohyama
This figure shows the co-authorship network connecting the top 25 collaborators of M Tohyama.
A scholar is included among the top collaborators of M Tohyama 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 M Tohyama. M Tohyama is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Tohyama, M, Keiji Satoh, Tetsuro Sakumoto, et al.. (1978). Organization and projections of the neurons in the dorsal tegmental area of the rat.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 19(2). 165–76.43 indexed citations
10.
Kimoto, Y, Keiji Satoh, Tetsuro Sakumoto, M Tohyama, & Nobuko Shimizu. (1978). Afferent fiber connections from the lower brain stem to the rat cerebellum by the horseradish peroxidase method combined with MAO staining, with special reference to noradrenergic neurons.. PubMed. 19(1). 85–100.42 indexed citations
11.
Tohyama, M, Keiko Yamamoto, Keiji Satoh, Tetsuro Sakumoto, & Nobuko Shimizu. (1977). Catecholamine innervation of the forebrain in the bull frog, Rana catesbiana.. PubMed. 18(3). 223–8.9 indexed citations
12.
Yamamoto, Kei, M Tohyama, & N. Shimizu. (1977). Comparative anatomy of the topography of catecholamine containing neuron system in the brain stem from birds to teleosts.. PubMed. 18(3). 229–40.26 indexed citations
13.
Tohyama, M, Toshihiro Maeda, & Nobuko Shimizu. (1976). Comparative anatomy of the locus coeruleus. II. Organization and projection of the catecholamine containing neurons in the upper rhombencephalon of the frog, Rana catesbiana.. PubMed. 17(1). 81–9.22 indexed citations
14.
Tohyama, M, et al.. (1974). Fluorescence and electron microscopic analysis of axonal change of coerulo-cortical noradrenaline neuron system following destruction of locus coeruleus and administration of 6-hydroxydopa in the rat brain.. PubMed. 24(4). 205–21.13 indexed citations
15.
Tohyama, M, et al.. (1974). Comparative anatomy of the locus coeruleus. I. Organization and ascending projections of the catecholamine containing neurons in the pontine region of the bird, Melopsittacus undulatus.. PubMed. 15(4). 319–30.30 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.