This map shows the geographic impact of P. E. Roland'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 P. E. Roland with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P. E. Roland more than expected).
This network shows the impact of papers produced by P. E. Roland. 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 P. E. Roland. The network helps show where P. E. Roland may publish in the future.
Co-authorship network of co-authors of P. E. Roland
This figure shows the co-authorship network connecting the top 25 collaborators of P. E. Roland.
A scholar is included among the top collaborators of P. E. Roland 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 P. E. Roland. P. E. Roland is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Ehrsson, H. Henrik, Eiichi Naito, Stefan Geyer, et al.. (1999). Somatotopic mapping of the human motor cortices: An fMRI study. Max Planck Digital Library. 1408–1408.4 indexed citations
Geyer, Stefan, Anders Ledberg, Thorsten Schormann, Karl Zilles, & P. E. Roland. (1997). Microstructure and function of the primary somatosensory cortex of man. An integrative study using cytoarchitectonic mapping and PET. Max Planck Digital Library.3 indexed citations
Zilles, Karl, Gottfried Schlaug, Stefan Geyer, & P. E. Roland. (1995). Mapping of human supplementary and cingulate motor areas. Max Planck Digital Library. 285–285.2 indexed citations
9.
Geyer, Stefan, Karl Zilles, Andreas Dabringhaus, Thorsten Schormann, & P. E. Roland. (1995). Morphological and functional evidence for two different subregions within the human primary motor cortex. Max Planck Digital Library. 1419–1419.2 indexed citations
10.
Geyer, Stefan, Karl Zilles, Ulrich Simon, et al.. (1995). Architectonic and receptor autoradiographic mapping of the human primary somatosensory cortex. 259–259.5 indexed citations
11.
Schleicher, A., Katrin Amunts, Stefan Geyer, et al.. (1995). A method of observer-independent cytoarchitectonic mapping of the human cortex. Max Planck Digital Library. 77–77.9 indexed citations
Roland, P. E., E Skinhöj, B. Larsen, & Niels A. Lassen. (1977). The role of different cortical areas in the organization of voluntary movements in man. A regional cerebral blood flow study.. PubMed. 64. 542–3, 277.10 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.