Researcher profile
Eef Theunissen
My research focuses on psychopharmacology, employing experimental studies to investigate the impact of various drugs on cognition, subjective experiences, and driving performance. I've explored the effects of medicinal drugs such as antihistamines and antidepressants, as well as illicit substances, with a focus on (synthetic) cannabis and novel psychoactive substances (NPS).
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16 connected articles
Metabolomic profiling of cannabis use and cannabis intoxication in humans.2025 · Europe PMCCannabis Use and Neuroadaptation: A Call for Δ <i><sup>9</sup></i> -Tetrahydrocannabinol Challenge Studies.2022 · PubMed Central Open AccessA Comparison of Acute Neurocognitive and Psychotomimetic Effects of a Synthetic Cannabinoid and Natural Cannabis at Psychotropic Dose Equivalence.2022 · Europe PMCFunctional brain connectomes reflect acute and chronic cannabis use.2022 · PubMed Central Open AccessCannabis containing equivalent concentrations of delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD) induces less state anxiety than THC-dominant cannabis.2022 · Europe PMCPsychotomimetic symptoms after a moderate dose of a synthetic cannabinoid (JWH-018): implications for psychosis.2021 · PubMed Central Open AccessNeurocognition and Subjective Experience Following Acute Doses of the Synthetic Cannabinoid JWH-018: Responders Versus Nonresponders.2019 · Europe PMCDrug liking and wanting, not impulsive action or reflection is increased by 4-fluoroamphetamine.2018 · PubMed Central Open AccessErratum: Cannabis and tolerance: acute drug impairment as a function of cannabis use history.2016 · PubMed Central Open AccessCannabis and tolerance: acute drug impairment as a function of cannabis use history.2016 · PubMed Central Open AccessSubjective aggression during alcohol and cannabis intoxication before and after aggression exposure.2016 · PubMed Central Open AccessCannabis and cocaine decrease cognitive impulse control and functional corticostriatal connectivity in drug users with low activity DBH genotypes.2015 · PubMed Central Open AccessPsychomotor Function in Chronic Daily Cannabis Smokers during Sustained Abstinence2013 · PubMed Central Open AccessA placebo-controlled study to assess Standardized Field Sobriety Tests performance during alcohol and cannabis intoxication in heavy cannabis users and accuracy of point of collection testing devices for detecting THC in oral fluid2012 · PubMed Central Open AccessNeurophysiological functioning of occasional and heavy cannabis users during THC intoxication2011 · PubMed Central Open AccessTolerance and cross-tolerance to neurocognitive effects of THC and alcohol in heavy cannabis users2010 · PubMed Central Open Access
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Matched by exact identifiers only. Profile data: ORCID. Last retrieved 09/09/2026.