Ramaekers, Johannes G.

Me, myself, bye: regional alterations in glutamate and the experience of ego dissolution with psilocybin

Mason, N. L., Kuypers, K. P. C., Müller, F., Reckweg, J., Tse, D. H. Y., Toennes, S. W., Hutten, N. R. P. W., Jansen, J. F. A., Stiers, P., Feilding, A., et al. (2020) · Neuropsychopharmacology

Psychedelics and Drug StudiesNeurotransmitter Receptor Influence on Behavior

Cited by 258

Characterizing the cognitive effects of cocaine: a comprehensive review.

Spronk, D. B., van Wel, J. H. P., Ramaekers, J. G., & Verkes, R. J. (2013) · Neuroscience & Biobehavioral Reviews

Neurotransmitter Receptor Influence on BehaviorSubstance Abuse Treatment and Outcomes

Cited by 245

Sub-acute and long-term effects of ayahuasca on affect and cognitive thinking style and their association with ego dissolution.

Uthaug, M. V., van Oorsouw, K., Kuypers, K. P. C., van Boxtel, M., Broers, N. J., Mason, N. L., Toennes, S. W., Riba, J., & Ramaekers, J. G. (2018) · Psychopharmacology

Psychedelics and Drug StudiesReligion, Spirituality, and Psychology

Cited by 212

Ayahuasca enhances creative divergent thinking while decreasing conventional convergent thinking

Kuypers, K. P. C., Riba, J., de la Fuente Revenga, M., Barker, S., Theunissen, E. L., & Ramaekers, J. G. (2016) · Psychopharmacology

Psychedelics and Drug StudiesCreativity in Education and Neuroscience

Cited by 201

A single inhalation of vapor from dried toad secretion containing 5-methoxy-N,N-dimethyltryptamine (5-MeO-DMT) in a naturalistic setting is related to sustained enhancement of satisfaction with life, mindfulness-related capacities, and a decrement of psychopathological symptoms.

Uthaug, M. V., Lancelotta, R., van Oorsouw, K., Kuypers, K. P. C., Mason, N., Rak, J., Šuláková, A., Jurok, R., Maryška, M., Kuchař, M., et al. (2019) · Psychopharmacology

Psychedelics and Drug StudiesParanormal Experiences and Beliefs

Cited by 197

Psychedelic-Assisted Psychotherapy—A Systematic Review of Associated Psychological Interventions

Cavarra, M., Falzone, A., Ramaekers, J. G., Kuypers, K. P. C., & Mento, C. (2022) · Frontiers in Psychology

Psychedelics and Drug StudiesPsychotherapy Techniques and Applications

Cited by 171

Low doses of LSD acutely increase BDNF blood plasma levels in healthy volunteers

Hutten, N. R. P. W., Mason, N. L., Dolder, P. C., Theunissen, E. L., Holze, F., Liechti, M. E., Varghese, N., Eckert, A., Feilding, A., Ramaekers, J. G., et al. (2021) · ACS Pharmacology & Translational Science

Psychedelics and Drug StudiesNeurotransmitter Receptor Influence on Behavior

Cited by 131

Naturalistic Use of Mescaline Is Associated with Self-Reported Psychiatric Improvements and Enduring Positive Life Changes

Agin-Liebes, G., Haas, T. F., Lancelotta, R., Uthaug, M. V., Ramaekers, J. G., & Davis, A. K. (2021) · ACS Pharmacology & Translational Science

Psychedelics and Drug StudiesReligion, Spirituality, and Psychology

Cited by 124

Mood and cognition after administration of low LSD doses in healthy volunteers: A placebo controlled dose-effect finding study

Hutten, N. R. P. W., Mason, N. L., Dolder, P. C., Theunissen, E. L., Holze, F., Liechti, M. E., Feilding, A., Ramaekers, J. G., & Kuypers, K. P. C. (2020) · European Neuropsychopharmacology

Psychedelics and Drug StudiesNeurotransmitter Receptor Influence on Behavior

Cited by 123

Prospective examination of synthetic 5-methoxy-N,N-dimethyltryptamine inhalation: effects on salivary IL-6, cortisol levels, affect, and non-judgment

Uthaug, M. V., Lancelotta, R., Szabo, A., Davis, A. K., Riba, J., & Ramaekers, J. G. (2020) · Psychopharmacology

Psychedelics and Drug StudiesForensic Toxicology and Drug Analysis

Cited by 117

A placebo-controlled study of the effects of ayahuasca, set and setting on mental health of participants in ayahuasca group retreats

Uthaug, M. V., Mason, N. L., Toennes, S. W., Reckweg, J. T., de Sousa Fernandes Perna, E. B., Kuypers, K. P. C., van Oorsouw, K., Riba, J., & Ramaekers, J. G. (2021) · Psychopharmacology

Psychedelics and Drug StudiesPain Management and Placebo Effect

Cited by 112

A phase 1/2 trial to assess safety and efficacy of a vaporized 5-methoxy-N,N-dimethyltryptamine formulation (GH001) in patients with treatment-resistant depression

Reckweg, J. T., van Leeuwen, C. J., Henquet, C., van Amelsvoort, T., Theunissen, E. L., Mason, N. L., Paci, R., Terwey, T. H., & Ramaekers, J. G. (2023) · Frontiers in Psychiatry

Psychedelics and Drug StudiesTreatment of Major Depression

Cited by 96

Multifaceted empathy of healthy volunteers after single doses of MDMA: A pooled sample of placebo-controlled studies

Kuypers, K. P., Dolder, P. C., Ramaekers, J. G., & Liechti, M. E. (2017) · Journal of Psychopharmacology

Psychedelics and Drug StudiesNeurotransmitter Receptor Influence on Behavior

Cited by 89

No evidence that MDMA-induced enhancement of emotional empathy is related to peripheral oxytocin levels or 5-HT1a receptor activation

Kuypers, K. P. C., de la Torre, R., Farre, M., Yubero-Lahoz, S., Dziobek, I., Van den Bos, W., & Ramaekers, J. G. (2014) · PLoS ONE

Psychedelics and Drug StudiesNeuroendocrine regulation and behavior

Cited by 88

Persisting effects of ayahuasca on empathy, creative thinking, decentering, personality, and well-being.

Kiraga, M. K., Mason, N. L., Uthaug, M. V., van Oorsouw, K. I. M., Toennes, S. W., Ramaekers, J. G., & Kuypers, K. P. C. (2021) · Frontiers in Pharmacology

Psychedelics and Drug StudiesPsychological Well-being and Life Satisfaction

Cited by 85

Therapeutic effect of an ayahuasca analogue in clinically depressed patients: a longitudinal observational study

van Oorsouw, K., Toennes, S. W., & Ramaekers, J. G. (2022) · Psychopharmacology

Psychedelics and Drug StudiesReligion, Spirituality, and Psychology

Cited by 74

Effects of moclobemide and mianserin on highway driving, psychometric performance and subjective parameters, relative to placebo

Ramaekers, J. G., Swijgman, H. F., & O'Hanlon, J. F. (1992) · Psychopharmacology

Sleep and Work-Related FatigueTraffic and Road Safety

Cited by 60

Hazy memories in the courtroom: A review of alcohol and other drug effects on false memory and suggestibility

Kloft, L., Monds, L. A., Blokland, A., Ramaekers, J. G., & Otgaar, H. (2021) · Neuroscience & Biobehavioral Reviews

Memory Processes and InfluencesDeception detection and forensic psychology

Cited by 58

A Phase 1, Dose-Ranging Study to Assess Safety and Psychoactive Effects of a Vaporized 5-Methoxy-N, N-Dimethyltryptamine Formulation (GH001) in Healthy Volunteers

Reckweg, J., Mason, N. L., van Leeuwen, C., Toennes, S. W., Terwey, T. H., & Ramaekers, J. G. (2021) · Frontiers in Pharmacology

Psychedelics and Drug StudiesParanormal Experiences and Beliefs

Cited by 58

Selective verbal and spatial memory impairment after 5-HT 1A and 5-HT 2A receptor blockade in healthy volunteers pre-treated with an SSRI

Wingen, M., Kuypers, K. P. C., & Ramaekers, J. G. (2007) · Journal of Psychopharmacology

Neurotransmitter Receptor Influence on BehaviorSchizophrenia research and treatment

Cited by 44

Orbital and Medial Prefrontal Cortex Functional Connectivity of Major Depression Vulnerability and Disease

Samara, Z., Evers, E. A. T., Peeters, F., Uylings, H. B. M., Rajkowska, G., Ramaekers, J. G., & Stiers, P. (2018) · Biological Psychiatry: Cognitive Neuroscience and Neuroimaging

Functional Brain Connectivity StudiesTreatment of Major Depression

Cited by 40

Decreases in State and Trait Anxiety Post-psilocybin: A Naturalistic, Observational Study Among Retreat Attendees

Kiraga, M. K., Kuypers, K. P. C., Uthaug, M. V., Ramaekers, J. G., & Mason, N. L. (2022) · Frontiers in Psychiatry

Psychedelics and Drug StudiesReligion, Spirituality, and Psychology

Cited by 26

Infusing pleasure: mood effects of the consumption of a single cup of tea

Einöther, S. J. L., Rowson, M., Ramaekers, J. G., & Giesbrecht, T. (2016) · Appetite

Tea Polyphenols and EffectsCoffee research and impacts

Cited by 12

False memories in the field: Impact of substance intoxication and sleep restriction on false memory formation

Kloft, L., Otgaar, H., Blokland, A., van Oorsouw, K., Schepers, J., Steinmeyer, S., & Ramaekers, J. G. (2023) · Journal of Applied Research in Memory and Cognition

Memory Processes and InfluencesDeception detection and forensic psychology

Cited by 6