Zobrazeno 1 - 10
of 285
pro vyhledávání: '"Johannes G Ramaekers"'
Autor:
Nadia R. P. W. Hutten, Conny W. E. M. Quaedflieg, Natasha L. Mason, Eef L. Theunissen, Matthias E. Liechti, Urs Duthaler, Kim P. C. Kuypers, Valerie Bonnelle, Amanda Feilding, Johannes G. Ramaekers
Publikováno v:
Translational Psychiatry, Vol 14, Iss 1, Pp 1-10 (2024)
Abstract The repeated use of small doses of psychedelics (also referred to as “microdosing”) to facilitate benefits in mental health, cognition, and mood is a trending practice. Placebo-controlled studies however have largely failed to demonstrat
Externí odkaz:
https://doaj.org/article/2e3b94844f724d0b8588363b1ebe9d2a
Autor:
Kim P C Kuypers, Eef L Theunissen, Janelle H P van Wel, Elizabeth B de Sousa Fernandes Perna, Anke Linssen, Anke Sambeth, Benjamin G Schultz, Johannes G Ramaekers
Publikováno v:
PLoS ONE, Vol 11, Iss 2, p e0149438 (2016)
BACKGROUND:Ecstasy use has been associated with short-term and long-term memory deficits on a standard Word Learning Task (WLT). The clinical relevance of this has been debated and is currently unknown. The present study aimed at evaluating the clini
Externí odkaz:
https://doaj.org/article/9947606521f44f36b1ceac90739da60b
Publikováno v:
PLoS ONE, Vol 10, Iss 2, p e0117045 (2015)
OBJECTIVE:To assess drug induced driving impairment, initial screening is needed. However, no consensus has been reached about which initial screening tools have to be used. The present study aims to determine the ability of a battery of psychometric
Externí odkaz:
https://doaj.org/article/0235141997d0432780409adcd52dde23
Autor:
Kim P C Kuypers, Rafael de la Torre, Magi Farre, Samanta Yubero-Lahoz, Isabel Dziobek, Wouter Van den Bos, Johannes G Ramaekers
Publikováno v:
PLoS ONE, Vol 9, Iss 6, p e100719 (2014)
The present study aimed at investigating the effect of MDMA on measures of empathy and social interaction, and the roles of oxytocin and the 5-HT1A receptor in these effects. The design was placebo-controlled within-subject with 4 treatment condition
Externí odkaz:
https://doaj.org/article/0288e0b899754a2ea0cc5f7845e66e19
Publikováno v:
PLoS ONE, Vol 8, Iss 6, p e68355 (2013)
The default-mode network (DMN), which comprises medial frontal, temporal and parietal regions, is part of the brain's intrinsic organization. The serotonergic (5-HT) neurotransmitter system projects to DMN regions from midbrain efferents, and manipul
Externí odkaz:
https://doaj.org/article/ac63f10f887d4635a4b1602db6277c45
Autor:
Wendy M Bosker, Erin L Karschner, Dayong Lee, Robert S Goodwin, Jussi Hirvonen, Robert B Innis, Eef L Theunissen, Kim P C Kuypers, Marilyn A Huestis, Johannes G Ramaekers
Publikováno v:
PLoS ONE, Vol 8, Iss 1, p e53127 (2013)
The present study assessed psychomotor function in chronic, daily cannabis smokers during 3 weeks continuously monitored abstinence on a secure research unit. We hypothesized that psychomotor performance would improve during abstinence of chronic, da
Externí odkaz:
https://doaj.org/article/e5c24cdfb6ed4b8cbf760f9e300aa6be
Autor:
Janelle H P van Wel, Kim P C Kuypers, Eef L Theunissen, Wendy M Bosker, Katja Bakker, Johannes G Ramaekers
Publikováno v:
PLoS ONE, Vol 7, Iss 7, p e40187 (2012)
UNLABELLED: MDMA induces positive mood and increases impulse control during intoxication, but only a few studies on the neuropharmacological mechanisms underlying these processes have been conducted. It was hypothesized that pretreatment with 5-HT(1)
Externí odkaz:
https://doaj.org/article/ee4ea0dc9f9b40c2a962f7281e369e36
Publikováno v:
Frontiers in Physiology, Vol 14 (2024)
Introduction: Literature suggests pilots experience fatigue differently. So-called fatigue-resistant or -vulnerable individuals might also respond differently to countermeasures or stimulants. This study, which is part of a larger randomized controll
Externí odkaz:
https://doaj.org/article/1f6066fc12e84795ba79f5feb029b25a
Autor:
Pablo Mallaroni, Natasha L. Mason, Lilian Kloft, Johannes T. Reckweg, Kim van Oorsouw, Stefan W. Toennes, Hanna M. Tolle, Enrico Amico, Johannes G. Ramaekers
Publikováno v:
NeuroImage, Vol 285, Iss , Pp 120480- (2024)
The knowledge that brain functional connectomes are unique and reliable has enabled behaviourally relevant inferences at a subject level. However, whether such “fingerprints” persist under altered states of consciousness is unknown. Ayahuasca is
Externí odkaz:
https://doaj.org/article/a9d8b103c75e486388e3147bc384b587
Present and future of metabolic and metabolomics studies focused on classical psychedelics in humans
Autor:
Francisco Madrid-Gambin, David Fabregat-Safont, Alex Gomez-Gomez, Eulàlia Olesti, Natasha L. Mason, Johannes G. Ramaekers, Oscar J. Pozo
Publikováno v:
Biomedicine & Pharmacotherapy, Vol 169, Iss , Pp 115775- (2023)
Psychedelics are classical hallucinogen drugs that induce a marked altered state of consciousness. In recent years, there has been renewed attention to the possible use of classical psychedelics for the treatment of certain mental health disorders. H
Externí odkaz:
https://doaj.org/article/2344c837da3c4022b060455a24bf84dd