Sys Stybe Johansen

3.9k total citations · 1 hit paper
114 papers, 2.9k citations indexed

About

Sys Stybe Johansen is a scholar working on Toxicology, Clinical Psychology and Cellular and Molecular Neuroscience. According to data from OpenAlex, Sys Stybe Johansen has authored 114 papers receiving a total of 2.9k indexed citations (citations by other indexed papers that have themselves been cited), including 66 papers in Toxicology, 30 papers in Clinical Psychology and 27 papers in Cellular and Molecular Neuroscience. Recurrent topics in Sys Stybe Johansen's work include Forensic Toxicology and Drug Analysis (66 papers), Psychedelics and Drug Studies (28 papers) and Neurotransmitter Receptor Influence on Behavior (26 papers). Sys Stybe Johansen is often cited by papers focused on Forensic Toxicology and Drug Analysis (66 papers), Psychedelics and Drug Studies (28 papers) and Neurotransmitter Receptor Influence on Behavior (26 papers). Sys Stybe Johansen collaborates with scholars based in Denmark, United States and China. Sys Stybe Johansen's co-authors include Kristían Línnet, Marie Katrine Klose Nielsen, Petur Weihe Dalsgaard, Erik Arvin, Gitte M. Knudsen, Xin Wang, Asger B. Hansen, Brice Ozenne, Dea Siggaard Stenbæk and Patrick M. Fisher and has published in prestigious journals such as SHILAP Revista de lepidopterología, Biochemical Journal and Antimicrobial Agents and Chemotherapy.

In The Last Decade

Sys Stybe Johansen

109 papers receiving 2.8k 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.

Psychedelic effects of psilocybin correlate with serotonin 2A receptor occupancy and plasma psilocin levels

2019 338 citations M. Madsen, Patrick M. Fisher et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Sys Stybe Johansen Denmark	30	1.3k	945	660	486	447	114	2.9k
Simon Elliott United Kingdom	30	1.3k 1.0×	821 0.9×	630 1.0×	441 0.9×	256 0.6×	82	2.2k
Márcia Carvalho Portugal	39	1.0k 0.8×	575 0.6×	581 0.9×	1.5k 3.2×	519 1.2×	121	4.5k
Hitoshi Tsuchihashi Japan	34	1.9k 1.4×	811 0.9×	588 0.9×	902 1.9×	1.2k 2.6×	170	3.6k
Alphonse Poklis United States	37	1.9k 1.4×	828 0.9×	934 1.4×	578 1.2×	497 1.1×	189	4.1k
Stefan W. Toennes Germany	34	1.3k 1.0×	1.1k 1.2×	851 1.3×	367 0.8×	151 0.3×	158	4.0k
Barry Levine United States	43	2.0k 1.5×	664 0.7×	690 1.0×	1.0k 2.1×	420 0.9×	195	5.8k
Eugénia Gallardo Portugal	32	785 0.6×	330 0.3×	286 0.4×	766 1.6×	583 1.3×	168	3.3k
Sabina Strano Rossi Italy	31	1.4k 1.1×	429 0.5×	269 0.4×	379 0.8×	670 1.5×	86	2.3k
Manuela Pellegrini Italy	32	1.0k 0.8×	330 0.3×	320 0.5×	393 0.8×	409 0.9×	109	2.6k
Justin L. Poklis United States	37	1.2k 0.9×	763 0.8×	1.3k 2.0×	840 1.7×	221 0.5×	144	3.8k

Countries citing papers authored by Sys Stybe Johansen

Since Specialization

Citations

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

Fields of papers citing papers by Sys Stybe Johansen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sys Stybe Johansen. 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 Sys Stybe Johansen. The network helps show where Sys Stybe Johansen may publish in the future.

Co-authorship network of co-authors of Sys Stybe Johansen

This figure shows the co-authorship network connecting the top 25 collaborators of Sys Stybe Johansen. A scholar is included among the top collaborators of Sys Stybe Johansen 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 Sys Stybe Johansen. Sys Stybe Johansen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

McVicker, Gareth, Giulia Pilla, Jonathan C. Thomas, et al.. (2024). Shared mechanisms of enhanced plasmid maintenance and antibiotic tolerance mediated by the VapBC toxin:antitoxin system. mBio. 16(2). e0261624–e0261624.

Johansen, Sys Stybe, et al.. (2024). Automated enzymatic hydrolysis of urine samples for improved systematic toxicological analysis of drug‐facilitated sexual assault cases. Drug Testing and Analysis. 16(11). 1254–1270. 1 indexed citations

Nielsen, Marie Katrine Klose, et al.. (2023). Detection of scopolamine in urine and hair in a drug-facilitated sexual assault. Forensic Science International. 347. 111678–111678. 9 indexed citations

Johansen, Sys Stybe, et al.. (2023). Uncovering forensic evidence of drug-facilitated sexual assault: Toxicological findings from Eastern Denmark from 2015–2022. Legal Medicine. 65. 102325–102325. 4 indexed citations

Johansen, Sys Stybe, et al.. (2022). A review on the forensic toxicology of global drug-facilitated sexual assaults. SHILAP Revista de lepidopterología. 30 indexed citations

Madsen, M., Dea Siggaard Stenbæk, Sophia Armand, et al.. (2021). Psilocybin-induced changes in brain network integrity and segregation correlate with plasma psilocin level and psychedelic experience. European Neuropsychopharmacology. 50. 121–132. 83 indexed citations

Banner, Jytte, et al.. (2020). Segmental hair analysis of olanzapine and N-desmethyl-olanzapine in postmortem hair from mentally ill patients by LC–MS/MS. Journal of Pharmaceutical and Biomedical Analysis. 190. 113510–113510. 14 indexed citations

Mardal, Marie, Niels Bjerre Holm, Sys Stybe Johansen, et al.. (2019). Ketamine analogues: Comparative toxicokinetic in vitro–in vivo extrapolation and quantification of 2-fluorodeschloroketamine in forensic blood and hair samples. Journal of Pharmaceutical and Biomedical Analysis. 180. 113049–113049. 25 indexed citations

Johansen, Sys Stybe, et al.. (2019). Distribution of zopiclone and main metabolites in hair following a single dose. Forensic Science International. 306. 110074–110074. 6 indexed citations

10.

Wang, Xin, Sys Stybe Johansen, Marie Katrine Klose Nielsen, & Kristían Línnet. (2018). Segmental Hair Analysis—Interpretation of the Time of Drug Intake in Two Patients Undergoing Drug Treatment. Journal of Forensic Sciences. 64(3). 950–955. 23 indexed citations

11.

Mardal, Marie, Sys Stybe Johansen, Rasmus Telving, et al.. (2018). Postmortem analysis of three methoxyacetylfentanyl-related deaths in Denmark and in vitro metabolite profiling in pooled human hepatocytes. Forensic Science International. 290. 310–317. 27 indexed citations

12.

Piper, Thomas, Xin Wang, Daniel Sejer Pedersen, et al.. (2017). Several possible toxicological and genetic tools for the extension of the detection window after GHB intake. Research at the University of Copenhagen (University of Copenhagen). 1 indexed citations

13.

Noble, Carolina, Petur Weihe Dalsgaard, Sys Stybe Johansen, & Kristían Línnet. (2017). Application of a screening method for fentanyl and its analogues using UHPLC‐QTOF‐MS with data‐independent acquisition (DIA) in MS^E mode and retrospective analysis of authentic forensic blood samples. Drug Testing and Analysis. 10(4). 651–662. 62 indexed citations

14.

Wang, Xin, Sys Stybe Johansen, Marie Katrine Klose Nielsen, & Kristían Línnet. (2016). Targeted analysis of 116 drugs in hair by UHPLC‐MS/MS and its application to forensic cases. Drug Testing and Analysis. 9(8). 1137–1151. 39 indexed citations

15.

Wang, Xin, Kristían Línnet, & Sys Stybe Johansen. (2015). Development of a UPLC–MS/MS method for determining γ-hydroxybutyric acid (GHB) and GHB glucuronide concentrations in hair and application to forensic cases. Forensic Toxicology. 34(1). 51–60. 26 indexed citations

16.

Nielsen, Marie Katrine Klose, Sys Stybe Johansen, & Kristían Línnet. (2015). Evaluation of poly-drug use in methadone-related fatalities using segmental hair analysis. Forensic Science International. 248. 134–139. 24 indexed citations

17.

Børglum, Jens, Kenneth B. Jensen, Anders Christensen, et al.. (2012). Distribution Patterns, Dermatomal Anesthesia, and Ropivacaine Serum Concentrations After Bilateral Dual Transversus Abdominis Plane Block. Regional Anesthesia & Pain Medicine. 37(3). 294–301. 125 indexed citations

18.

Johansen, Sys Stybe, et al.. (2012). Isomers of fluoroamphetamines detected in forensic cases in Denmark. International Journal of Legal Medicine. 126(4). 541–547. 31 indexed citations

19.

Línnet, Kristían, et al.. (2008). Dominance of pre-analytical over analytical variation for measurement of methadone and its main metabolite in postmortem femoral blood. Forensic Science International. 179(1). 78–82. 20 indexed citations

20.

Johansen, Sys Stybe. (2002). ECSTASY AND DESIGNER AMPHETAMINES - FINDINGS IN DRIVERS AND POST-MORTEM CASES IN DENMARK. 2002. 479–486. 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.

Explore authors with similar magnitude of impact