Lena Ulm

1.9k total citations
32 papers, 1.3k citations indexed

About

Lena Ulm is a scholar working on Epidemiology, Cognitive Neuroscience and Neurology. According to data from OpenAlex, Lena Ulm has authored 32 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Epidemiology, 10 papers in Cognitive Neuroscience and 10 papers in Neurology. Recurrent topics in Lena Ulm's work include Acute Ischemic Stroke Management (10 papers), Transcranial Magnetic Stimulation Studies (7 papers) and Stroke Rehabilitation and Recovery (4 papers). Lena Ulm is often cited by papers focused on Acute Ischemic Stroke Management (10 papers), Transcranial Magnetic Stimulation Studies (7 papers) and Stroke Rehabilitation and Recovery (4 papers). Lena Ulm collaborates with scholars based in Germany, Australia and Spain. Lena Ulm's co-authors include Marcus Meinzer, Robert Lindenberg, Agnes Flöel, Andreas Meisel, Christian Meisel, Sarah Hoffmann, Hendrik Harms, Tobias Flaisch, Carina Volk and Daria Antonenko and has published in prestigious journals such as Journal of Neuroscience, Blood and PLoS ONE.

In The Last Decade

Lena Ulm

31 papers receiving 1.3k citations

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Lena Ulm 539 451 250 218 179 32 1.3k
Lynette Kiers 510 0.9× 310 0.7× 330 1.3× 420 1.9× 158 0.9× 43 1.5k
Giovanni Frisullo 356 0.7× 148 0.3× 375 1.5× 574 2.6× 89 0.5× 104 2.3k
Mauro Bergui 212 0.4× 313 0.7× 315 1.3× 992 4.6× 184 1.0× 107 2.5k
Xing‐Chang Wei 121 0.2× 198 0.4× 133 0.5× 201 0.9× 162 0.9× 56 1.3k
Bahia Hakiki 201 0.4× 153 0.3× 281 1.1× 712 3.3× 49 0.3× 75 2.1k
Alessandro Castriota-Scanderbeg 148 0.3× 372 0.8× 97 0.4× 169 0.8× 93 0.5× 35 1.1k
A. Romani 206 0.4× 266 0.6× 140 0.6× 621 2.8× 81 0.5× 91 1.8k
Till‐Karsten Hauser 197 0.4× 212 0.5× 175 0.7× 515 2.4× 84 0.5× 95 1.5k
Jean‐Philippe Neau 121 0.2× 211 0.5× 385 1.5× 548 2.5× 90 0.5× 79 1.5k
Laura Mechtouff 116 0.2× 200 0.4× 420 1.7× 166 0.8× 77 0.4× 76 1.1k

Countries citing papers authored by Lena Ulm

Since Specialization
Citations

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

Fields of papers citing papers by Lena Ulm

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Lena Ulm

This figure shows the co-authorship network connecting the top 25 collaborators of Lena Ulm. A scholar is included among the top collaborators of Lena Ulm 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 Lena Ulm. Lena Ulm 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.
Rose, Ruben, Andi Krumbholz, Stephan Michalik, et al.. (2024). Non-cross-reactive epitopes dominate the humoral immune response to COVID-19 vaccination – kinetics of plasma antibodies, plasmablasts and memory B cells. Frontiers in Immunology. 15. 1382911–1382911. 8 indexed citations
2.
Ittermann, Till, Birte Holtfreter, Alexander Welk, et al.. (2022). Prevalence of SARS-CoV-2 IgG antibodies among dental teams in Germany. Clinical Oral Investigations. 26(5). 3965–3974. 9 indexed citations
3.
Bohnert, Jürgen A., Lena Ulm, Nils‐Olaf Hübner, et al.. (2022). The epidemiological relevance of the COVID-19-vaccinated population is decreasing after booster vaccination, as shown by incidence rate ratios. The Lancet Regional Health - Europe. 16. 100372–100372. 1 indexed citations
4.
Wilmes, Dunja, Frank Dombrowski, Jürgen Löffler, et al.. (2022). Splenic rupture and fungal endocarditis in a pediatric patient with invasive fusariosis after allogeneic hematopoietic stem cell transplantation for aplastic anemia: A case report. Frontiers in Pediatrics. 10. 1060663–1060663. 2 indexed citations
5.
Thiele, Thomas, Lena Ulm, Silva Holtfreter, et al.. (2021). Frequency of positive anti-PF4/polyanion antibody tests after COVID-19 vaccination with ChAdOx1 nCoV-19 and BNT162b2. Blood. 138(4). 299–303. 98 indexed citations
6.
Hotter, Benjamin, Sarah Hoffmann, Lena Ulm, et al.. (2020). External Validation of Five Scores to Predict Stroke-Associated Pneumonia and the Role of Selected Blood Biomarkers. Stroke. 52(1). 325–330. 28 indexed citations
7.
Hotter, Benjamin, Sarah Hoffmann, Lena Ulm, et al.. (2019). IL-6 Plasma Levels Correlate With Cerebral Perfusion Deficits and Infarct Sizes in Stroke Patients Without Associated Infections. Frontiers in Neurology. 10. 83–83. 42 indexed citations
8.
Mengel, Annerose, Lena Ulm, Benjamin Hotter, et al.. (2019). Biomarkers of immune capacity, infection and inflammation are associated with poor outcome and mortality after stroke - the PREDICT study. BMC Neurology. 19(1). 148–148. 35 indexed citations
9.
Hotter, Benjamin, Lena Ulm, Sarah Hoffmann, et al.. (2017). Selection bias in clinical stroke trials depending on ability to consent. BMC Neurology. 17(1). 206–206. 21 indexed citations
10.
Ulm, Lena, Sarah Hoffmann, Darius G. Nabavi, et al.. (2017). The Randomized Controlled STRAWINSKI Trial: Procalcitonin-Guided Antibiotic Therapy after Stroke. Frontiers in Neurology. 8. 153–153. 35 indexed citations
11.
Ulm, Lena, Katie L. McMahon, David A. Copland, Greig I. de Zubicaray, & Marcus Meinzer. (2015). Neural Mechanisms Underlying Perilesional Transcranial Direct Current Stimulation in Aphasia: A Feasibility Study. Frontiers in Human Neuroscience. 9. 550–550. 19 indexed citations
12.
Kantermann, Thomas, et al.. (2015). Changes in Chronotype after Stroke: A Pilot Study. Frontiers in Neurology. 5. 287–287. 16 indexed citations
13.
Meinzer, Marcus, Robert Lindenberg, Robert Darkow, et al.. (2014). Transcranial Direct Current Stimulation and Simultaneous Functional Magnetic Resonance Imaging. Journal of Visualized Experiments. 45 indexed citations
14.
Klehmet, Juliane, Lena Ulm, Siegfried Köhler, et al.. (2014). Effective treatment with intravenous immunoglobulins reduces autoreactive T-cell response in patients with CIDP. Journal of Neurology Neurosurgery & Psychiatry. 86(6). 686–691. 32 indexed citations
15.
Meinzer, Marcus, et al.. (2014). Transcranial direct current stimulation of the primary motor cortex improves word-retrieval in older adults. Frontiers in Aging Neuroscience. 6. 253–253. 57 indexed citations
16.
Ulm, Lena, Marcus Meinzer, Petra Denzler, et al.. (2013). A Circle-Monitor for Computerised Assessment of Visual Neglect in Peripersonal Space. PLoS ONE. 8(12). e82892–e82892. 7 indexed citations
17.
Meinzer, Marcus, Daria Antonenko, Robert Lindenberg, et al.. (2012). Electrical Brain Stimulation Improves Cognitive Performance by Modulating Functional Connectivity and Task-Specific Activation. Journal of Neuroscience. 32(5). 1859–1866. 211 indexed citations
18.
Meisel, Andreas, Christian Meisel, Hendrik Harms, Oliver Hartmann, & Lena Ulm. (2012). Predicting Post-Stroke Infections and Outcome with Blood-Based Immune and Stress Markers. Cerebrovascular Diseases. 33(6). 580–588. 35 indexed citations
19.
Ulm, Lena, Hendrik Harms, Stephanie Ohlraun, Peter Reimnitz, & Andreas Meisel. (2012). Impact of infections on long-term outcome after severe middle cerebral artery infarction. Journal of the Neurological Sciences. 319(1-2). 15–17. 11 indexed citations
20.
Styp‐Rekowska, Beata, Bettina Reglin, Lena Ulm, et al.. (2007). An Imaging Spectroscopy Approach for Measurement of Oxygen Saturation and Hematocrit During Intravital Microscopy. Microcirculation. 14(3). 207–221. 25 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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