Hartmut Schulz

3.6k total citations
116 papers, 2.2k citations indexed

About

Hartmut Schulz is a scholar working on Cognitive Neuroscience, Experimental and Cognitive Psychology and Astronomy and Astrophysics. According to data from OpenAlex, Hartmut Schulz has authored 116 papers receiving a total of 2.2k indexed citations (citations by other indexed papers that have themselves been cited), including 61 papers in Cognitive Neuroscience, 47 papers in Experimental and Cognitive Psychology and 18 papers in Astronomy and Astrophysics. Recurrent topics in Hartmut Schulz's work include Sleep and Wakefulness Research (59 papers), Sleep and related disorders (40 papers) and Circadian rhythm and melatonin (14 papers). Hartmut Schulz is often cited by papers focused on Sleep and Wakefulness Research (59 papers), Sleep and related disorders (40 papers) and Circadian rhythm and melatonin (14 papers). Hartmut Schulz collaborates with scholars based in Germany, France and United Kingdom. Hartmut Schulz's co-authors include Stephany Fulda, R. Lund, Johanna Wilde-Frenz, Marc Jobert, T. Pollmächer, Peter Jähnig, Gerhard Dirlich, Piero Salzarulo, Frédérik Bes and Nicola Bennert and has published in prestigious journals such as The Astrophysical Journal, Biological Psychiatry and Monthly Notices of the Royal Astronomical Society.

In The Last Decade

Hartmut Schulz

108 papers receiving 2.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hartmut Schulz Germany 24 1.4k 1.0k 556 336 197 116 2.2k
Joseph M. Ronda United States 24 2.2k 1.6× 3.1k 3.0× 3.4k 6.2× 1.3k 4.0× 92 0.5× 39 5.5k
Fabio Moroni Italy 26 1.6k 1.2× 1.1k 1.1× 305 0.5× 140 0.4× 69 0.4× 41 2.5k
Julia M. Stephen United States 34 2.6k 1.8× 464 0.5× 106 0.2× 90 0.3× 76 0.4× 194 3.7k
Ron Peled Israel 21 703 0.5× 491 0.5× 663 1.2× 738 2.2× 154 0.8× 67 1.7k
Kenneth C. Squires United States 27 5.1k 3.6× 1.0k 1.0× 52 0.1× 68 0.2× 110 0.6× 39 5.9k
Adenauer G. Casali Italy 29 3.4k 2.4× 263 0.3× 93 0.2× 82 0.2× 819 4.2× 52 4.6k
P.Y. Ktonas United States 22 1.1k 0.8× 301 0.3× 105 0.2× 95 0.3× 151 0.8× 61 1.6k
Walter G. Sannita Italy 24 1.4k 1.0× 245 0.2× 102 0.2× 171 0.5× 945 4.8× 98 3.2k
Steven Grant United States 25 713 0.5× 270 0.3× 102 0.2× 252 0.8× 250 1.3× 48 2.2k
Natasha Leporé United States 26 832 0.6× 201 0.2× 17 0.0× 318 0.9× 338 1.7× 135 2.5k

Countries citing papers authored by Hartmut Schulz

Since Specialization
Citations

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

Fields of papers citing papers by Hartmut Schulz

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hartmut Schulz

This figure shows the co-authorship network connecting the top 25 collaborators of Hartmut Schulz. A scholar is included among the top collaborators of Hartmut Schulz 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 Hartmut Schulz. Hartmut Schulz 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.
Geisler, Peter, Renate Wehrle, Alexander Yassouridis, et al.. (2025). Sleep and Aging. A Polysomnographic Follow‐Up Study, Some 40 Years Later. Journal of Sleep Research. 34(6). e70039–e70039. 1 indexed citations
2.
Kunze, Christian, et al.. (2019). Discharges of dust from NORM facilities: Key parameters to assess effective doses for public exposure. Journal of Sustainable Mining. 18(1). 31–37. 2 indexed citations
3.
Spiegelhalder, Kai, et al.. (2018). Sleep state misperception in psychiatric patients. Somnologie - Schlafforschung und Schlafmedizin. 23(1). 43–48. 3 indexed citations
4.
Schulz, Hartmut, et al.. (2017). Intra-Night Sleep Perception in Patients with Sleep Disorders. Sleep and Vigilance. 1(2). 89–95. 1 indexed citations
5.
Lambert, Martin, BG Schimmelmann, Dieter Naber, et al.. (2009). Early- and Delayed Antipsychotic Response and Prediction of Outcome in 528 Severely Impaired Patients with Schizophrenia Treated with Amisulpride. Pharmacopsychiatry. 42(6). 277–283. 34 indexed citations
6.
Müller, Bettina, et al.. (2006). A Taxonomic Analysis of Sleep Stages. SLEEP. 29(7). 967–974. 20 indexed citations
7.
Voshaar, Thomas, J. Heyder, D. Köhler, et al.. (2005). Partikuläre Luftverunreinigung und ihre Folgen für die menschliche Gesundheit. Pneumologie. 59(7). 470–476. 1 indexed citations
8.
Schulz, Hartmut & C. Henkel. (2003). Rotation and outflow in the central kiloparsec of the water-megamaser galaxies\nIC 2560, NGC 1386, NGC 1052, and Mrk 1210. Springer Link (Chiba Institute of Technology). 14 indexed citations
9.
Jobert, Marc, Peter Jähnig, & Hartmut Schulz. (1999). Effect of Two Antidepressant Drugs on REM Sleep and EMG Activity during Sleep. Neuropsychobiology. 39(2). 101–109. 18 indexed citations
10.
Schulz, Hartmut. (1997). Die Physiologie des Schlafes: Ein Vorwort. Somnologie - Schlafforschung und Schlafmedizin. 1(1). 5–6.
11.
Bes, Frédérik, Marc Jobert, Lyle Muller, & Hartmut Schulz. (1996). The diurnal distribution of sleep propensity: experimental data about the interaction of the propensities for slow‐wave sleep and REM sleep. Journal of Sleep Research. 5(2). 90–98. 28 indexed citations
12.
Jobert, Marc, et al.. (1995). ECG Activity in the Sleep of Insomniac Patients under the Influence of Lormetazepam and Zopiclone. Neuropsychobiology. 31(4). 204–209. 14 indexed citations
13.
14.
Bes, Frédérik, Christine Dugovic, I. Fagioli, et al.. (1988). Time course of night sleep EEG in the first year of life: a description based on automatic analysis. Electroencephalography and Clinical Neurophysiology. 69(6). 501–507. 21 indexed citations
15.
Geisler, Peter, et al.. (1986). Der multiple Einschlaflatenz-Test (MSLT) in der Differentialdiagnose der Narkolepsie. University of Regensburg Publication Server (University of Regensburg). 3 indexed citations
16.
Wegner, G. & Hartmut Schulz. (1981). Spectroscopy of suspected peculiar DA white dwarfs I : equivalent widths and line profiles.. Astronomy & Astrophysics Supplement Series. 43. 473–478. 1 indexed citations
17.
Koester, D., Hartmut Schulz, & V. Weidemann. (1979). Atmospheric parameters and mass distribution of DA white dwarfs.. A&A. 76. 262–275. 1 indexed citations
18.
Kato, Nobuyuki, Alan Wilson, Feroz Ahmed, et al.. (1978). Election of Officers of the Union and Chairmen of Commissions. Acta Crystallographica Section A. 34(6). 1047–1047. 1 indexed citations
19.
Dirlich, Gerhard, Jürgen Zulley, & Hartmut Schulz. (1977). The temporal pattern of the REM sleep rhythm. University of Regensburg Publication Server (University of Regensburg). 2 indexed citations
20.
Schulz, Hartmut. (1967). Entwicklung eines Scherfestigkeitsmeßkopfes zum Reifetester nach Prof. SCHNEIDER. Food / Nahrung. 11(5). 435–455. 1 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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