Sys Johansen
Associate Professor in Forensic Chemistry at the University of Copenhagen
Data updated
Research Footprint
Sys Johansen appears in 7 tracked papers (2011–2026), most studied alongside Psilocybin, MDMA and LSD, across Neuroimaging & Brain Measures, Healthy Volunteers and Depressive Disorders.
Most-cited paper: Psychedelic effects of psilocybin correlate with serotonin 2A receptor occupancy and plasma psilocin levels (491 citations).
Frequent co-authors: Gitte Knudsen, Patrick Fisher and Dea Stenbæk.
Background & Research
Sys Stybe Johansen is a pharmacist and Ph.D. who serves as an Associate Professor in the Section of Forensic Chemistry at the University of Copenhagen. Her work focuses on forensic chemistry, analytical chemistry of drugs and drugs of abuse, forensic toxicology, and drug analysis in alternative biological matrices such as saliva and hair. She appears as a coauthor on several psychedelic studies from the Copenhagen group investigating psilocybin and LSD in humans.
Key Impact
A key analytical chemistry collaborator on multiple landmark human psychedelic studies measuring psilocybin/LSD pharmacokinetics, receptor occupancy, and brain imaging outcomes.
Collaboration Network
12 collaborators· click a node to visit their profile
Full network →Compounds
Topics
Top Collaborators
Affiliations
Institutions, companies, and organisations Sys Johansen is associated with.
University of Copenhagen
academicThe Neurobiology Research Unit (NRU) at Copenhagen University Hospital has been carrying out clinical and preclinical research with psychedelics since 2017. The team at the NRU utilizes various neuroimaging techniques to better understand how psychedelics exert their effects on the brain. They have published numerous peer-reviewed articles on psychedelics and facilitated numerous medium-dose psilocybin sessions. The NRU is led by Professor Gitte Moos Knudsen.
View stakeholder →Aarhus University
academicResearchers at Aarhus University are undertaking studies investigating how and why people in Denmark microdose. The aim of this research is to generate knowledge on potentially new forms of self-care emerging outside the national healthcare system in Denmark. Led by Margit Anne Petersen at the Centre for Drug and Alcohol Research, the project explores areas where the healthcare system potentially fails to accommodate patients.
View stakeholder →