Journal: Journal of Psychopharmacology

Abbreviation

J Psychopharmacol

Publisher

SAGE

Journal Volumes

ISSN

0269-8811
1461-7285

Description

Filters

Reset filters

Search Results

Publications 1 - 10 of 13
  • Drunk decisions: Alcohol shifts choice from habitual towards goal-directed control in adolescent intermediate-risk drinkers
    Item type: Journal Article
    Obst, Elisabeth; Schad, Daniel J.; Huys, Quentin J.M.; et al. (2018)
    Journal of Psychopharmacology
  • CANTAB-based attention and memory studies in the common marmoset monkey
    Item type: Other Conference Item
    Spinelli, S.; Ballard, T.M.; Higgins, G.A.; et al. (2003)
    Journal of Psychopharmacology
  • Amphetamine Sensitisation and Memory in Healthy Human Volunteers
    Item type: Journal Article
    O'Daly, Owen G.; Joyce, Daniel; Tracy, Derek K.; et al. (2014)
    Journal of Psychopharmacology
  • A case-control field study on the relationships among type-2-diabetes, sleepiness and habitual caffeine intake
    Item type: Journal Article
    Urry, Emily; Jetter, Alexander; Holst, Sebastian C.; et al. (2017)
    Journal of Psychopharmacology
  • Methylenedioxymethamphetamine is a connectogen with empathogenic, entactogenic, and still further connective properties: It is time to reconcile "the great entactogen-empathogen debate"
    Item type: Journal Article
    Stocker, Kurt; Liechti, Matthias E. (2024)
    Journal of Psychopharmacology
    Science on methylenedioxymethamphetamine (MDMA) and MDMA-like substances is faced with the unique situation that this class of psychoactive agents is referred to with two basic names for its effects on the mind: empathogens and entactogens. Empathogen usually refers to the prosocial, empathetic, and openness properties of MDMA, while entactogen usually refers to the introspective and self-awareness properties of this substance. We review the origin and usage of the two terms, and also review recent findings that support that MDMA is an empathogen and an entactogen. Mostly no specified reasons can be detected whether research groups employ the term "entactogenic," "empathogenic," both, or neither, in their publications. A case is made that the use of two basic names for the effects on the mind for the same class of psychoactive substances is not warranted because a holistic principle underlies empathogenic and entactogenic properties of MDMA: an intense feeling of connection. Entactogenic characterizes being deeply connected to oneself, and empathogenic being deeply connected to others. We therefore suggest the name connectogen as the new basic name for the mind effects of MDMA and MDMA-like substances, a term having the connotation of producing a joining together/producing a connection. Thus, MDMA is basically a connectogen with at least the two major connective properties: entactogenic (intrapersonal) and empathogenic (interpersonal). Furthermore, first evidence shows that MDMA might also have further connectogenic properties such as a strong sense of connection with the here-and-now, the body, the world, and with spiritual principles. Finally, we compare connectogenic properties of MDMA with connectogenic properties of classic psychedelics, and lay out some future research in this regard.
  • Parental deprivation disrupts homeostatic and reward systems in the common marmoset
    Item type: Review Article
    Pryce, C.R.; Dettling, A.C.; Schnell, C.R.; et al. (2003)
    Journal of Psychopharmacology
  • Oral sodium oxybate does not alter plasma kisspeptin levels in healthy male volunteers
    Item type: Journal Article
    Bavato, Francesco; Schnider, Laura K.; Dornbierer, Dario A.; et al. (2023)
    Journal of Psychopharmacology
    Gamma-hydroxybutyrate (GHB, clinically administrated as sodium oxybate) is a GABA-B/GHB receptor agonist inducing prosexual effects and progesterone secretion in humans. As the neuropeptide kisspeptin has well-established roles in regulating sexual behavior and as it was also associated with GABA-B receptor and progesterone function, we investigated the effect of two GHB doses (20 and 35 mg/kg p.o.) on plasma kisspeptin levels in 30 healthy male volunteers, using a double-blind, randomized, placebo-controlled cross-over design. We found no significant alterations of kisspeptin levels after GHB administration compared to placebo. In conclusion, plasma kisspeptin levels are not related to the prosexual effects of GHB.
  • Linear Discriminant Analysis and Semi-Automatic Sleep-Wake Scoring in Mice
    Item type: Other Conference Item
    Brankack, J.; Kukushka, V.I.; Vyssotski, A.L.; et al. (2010)
    Journal of Psychopharmacology
  • The revival of the psychedelic experience scale: Revealing its extended-mystical, visual, and distressing experiential spectrum with LSD and psilocybin studies
    Item type: Journal Article
    Stocker, Kurt; Hartmann, Matthias; Ley, Laura; et al. (2024)
    Journal of Psychopharmacology
    Background: Research with the Psychedelic Experience Questionnaire/Scale (PES) focuses on questions relating to mystical experience (Mystical Experience Questionnaire (MEQ)). The psychometric potential of the non-MEQ items of the PES remains largely unexplored. Aims: We investigated whether the PES also yields subscales besides the MEQ30 subscales. Methods: Data from 239 PES measurements (140 healthy participants) from six studies with moderate to high doses of lysergic acid diethylamide and/or psilocybin were included. New subscales (with items other than MEQ30) were created and validated as follows: (1) theoretical derivation of candidate items; (2) removal of items with rare experiences; (3) exploratory factor analysis; and (4) confirmatory factor analysis. Correlations of subscales within the PES and between the PES and the 5-Dimensional Altered States of Consciousness Scale (5D-ASC) were performed. In addition, a cluster analysis using all items (except rare experiences) was performed. Results: The reliability of the four original factors of the MEQ30 was confirmed and four additional factors for the non-MEQ items were revealed: paradoxicality, connectedness, visual experience, and distressing experience. The first two additional factors were strongly correlated with the MEQ30 mystical subscale. Adding the new subscales to the MEQ30 subscales increased the explained variance with the 5D-ASC. The cluster analysis confirmed our main results and provided additional insights for future psychedelic psychometrics. Conclusion: The study yields a new validated 6-factor structure for extended mystical experience (MEQ40: MEQ30 + Paradoxicality + Connectedness) and covers psychedelic experience as a whole more comprehensively than has hitherto been possible within a single questionnaire (PES48). The entire PES (PES100) can also be used for further future psychedelic-psychometric research.
  • Effects of administration of calcium pyruvate on feeding behaviour in healthy human subjects
    Item type: Other Conference Item
    Bradley, S.; French, S.J.; Langhans, W. (2003)
    Journal of Psychopharmacology
Publications 1 - 10 of 13