20052020

Research output per year

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Research Output

Abstract

MEPHEDRONE EFFECTS ON ACUTE ALCOHOL INTOXICATION

Papaseit, E., Perez-Mana, C., de Souza, E., Mateus, J. A., Olesti, E., Theunissen, E., Kuypers, K., Ramaekers, J., Fonseca, F., Torrens, M., de la Torre, R. & Farre, M., Oct 2016, p. 28-28. 1 p.

Research output: Contribution to conferenceAbstractAcademic

Article

A case-control study estimating accident risk for alcohol, medicines and illegal drugs

Kuypers, K. P. C., Legrand, S. A., Ramaekers, J. G. & Verstraete, A. G., 28 Aug 2012, In : PLOS ONE. 7, 8, 9 p., e43496.

Research output: Contribution to journalArticleAcademicpeer-review

36 Citations (Scopus)
11 Citations (Scopus)

Acute dose of MDMA (75 mg) impairs spatial memory for location but leaves contextual processing of visuospatial information unaffected

Kuypers, K. P. & Ramaekers, J. G., 1 Jan 2007, In : Psychopharmacology. 189, 4, p. 557-563

Research output: Contribution to journalArticleAcademicpeer-review

28 Citations (Scopus)
65 Citations (Scopus)

Acute effects of nocturnal doses of MDMA on measures of impulsivity and psychomotor performance throughout the night

Kuypers, K. P., Wingen, M., Samyn, N., Limbert, N. & Ramaekers, J. G., 1 Jan 2007, In : Psychopharmacology. 192, 1, p. 111-119

Research output: Contribution to journalArticleAcademicpeer-review

23 Citations (Scopus)
Open Access

A 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 fluid

Bosker, W. M., Theunissen, E. L., Conen, S., Kuypers, K. P. C., Jeffery, W. K., Walls, H. C., Kauert, G. F., Toennes, S. W., Moeller, M. R. & Ramaekers, J. G., Oct 2012, In : Psychopharmacology. 223, 4, p. 439-446 8 p.

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)

A single dose of cocaine enhances prospective memory performance

Hutten, N. RPW., Kuypers, K. PC., van Wel, J. HP., Theunissen, E. L., Toennes, S. W., Verkes, R-J. & Ramaekers, J. G., Aug 2018, In : Journal of Psychopharmacology. 32, 8, p. 883–892 10 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
Open Access

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., Sep 2016, In : Psychopharmacology. 233, 18, p. 3395–3403 9 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
1 Citation (Scopus)
163 Downloads (Pure)

Blockade of 5-HT(2) receptor selectively prevents MDMA-induced verbal memory impairment

van Wel, J. H. P., Kuypers, K. P. C., Theunissen, E. L., Bosker, W. M., Bakker, K. & Ramaekers, J. G., 1 Jan 2011, In : Neuropsychopharmacology. 36, 9, p. 1932-1939

Research output: Contribution to journalArticleAcademicpeer-review

14 Citations (Scopus)

Brain reactivity to alcohol and cannabis marketing during sobriety and intoxication

de Sousa Fernandes Perna, E. B., Theunissen, E. L., Kuypers, K. P. C., Evers, E. A., Stiers, P., Toennes, S. W., Witteman, J., van Dalen, W. & Ramaekers, J. G., May 2017, In : Addiction Biology. 22, 3, p. 823–832 10 p.

Research output: Contribution to journalArticleAcademicpeer-review

Cannabis and cocaine decrease cognitive impulse control and functional corticostriatal connectivity in drug users with low activity DBH genotypes

Ramaekers, J. G., van Wel, J. H., Spronk, D., Franke, B., Kenis, G., Toennes, S. W., Kuypers, K. P. C., Theunissen, E. L., Stiers, P. & Verkes, R. J., 14 Dec 2015, In : Brain Imaging and Behavior. p. 1254–1263

Research output: Contribution to journalArticleAcademicpeer-review

Cannabis and tolerance: acute drug impairment as a function of cannabis use history

Ramaekers, J. G., van Wel, J. H., Spronk, D. B., Toennes, S. W., Kuypers, K. P. C., Theunissen, E. L. & Verkes, R. J., 26 May 2016, In : Scientific Reports. 6, 8 p., 26843.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
2 Citations (Scopus)
154 Downloads (Pure)

Changes in serotonin transporter (5-HTT) gene expression in peripheral blood cells after MDMA intake

Yubero-Lahoz, S., Kuypers, K. P. C., Ramaekers, J. G., Langohr, K., Farre, M. & de la Torre, R., Jun 2015, In : Psychopharmacology. 232, 11, p. 1921-1929

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Cocaine enhances figural, but impairs verbal 'flexible' divergent thinking

Hutten, N. R. P. W., Steenbergen, L., Colzato, L. S., Hommel, B., Theunissen, E. L., Ramaekers, J. G. & Kuypers, K. P. C., Jul 2019, In : European Neuropsychopharmacology. 29, 7, p. 813-824 12 p.

Research output: Contribution to journalArticleAcademicpeer-review

Depressive mood ratings are reduced by MDMA in female polydrug ecstasy users homozygous for the l-allele of the serotonin transporter

Kuypers, K. P. C., de la Torre, R., Farre, M., Xicota, L., Perna, E. B. D. S. F., Theunissen, E. L. & Ramaekers, J. G., 18 Jan 2018, In : Scientific Reports. 8, 7 p., 1061.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access

Dose-related effects of MDMA on psychomotor function and mood before, during, and after a night of sleep loss

Bosker, W. M., Kuypers, K. P. C., Conen, S. & Ramaekers, J. G., Mar 2010, In : Psychopharmacology. 209, 1, p. 69-76 8 p.

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Drug liking and wanting, not impulsive action or reflection is increased by 4-fluoroamphetamine

Kuypers, K. P. C., de Sousa Fernandes Perna, E. B., Dolder, P. C., Toennes, S. W., Theunissen, E. L., Mason, N. L., Hutten, N. R. P. W. & Ramaekers, J. G., Aug 2018, In : Psychopharmacology. 235, 8, p. 2349-2356 8 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access

Effects of acute MDMA intoxication on mood and impulsivity: role of the 5-HT(2) and 5-HT(1) receptors

van Wel, J. H. P., Kuypers, K. P. C., Theunissen, E. L., Bosker, W. M., Bakker, K. & Ramaekers, J. G., 10 Jul 2012, In : PLOS ONE. 7, 7, 8 p., 40187.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
20 Citations (Scopus)

Effects of stimulant drugs on actual and simulated driving: perspectives from four experimental studies conducted as part of the DRUID research consortium.

Ramaekers, J. G., Kuypers, K. P. C., Bosker, W. M., Brookhuis, K. A., Veldstra, J. A., Simons, R., Martens, M., Hjalmdahl, M., Forsman, A. & Knoche, A., 1 Jan 2012, In : Psychopharmacology. 222, 3, p. 413-418

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)

Emotional empathic responses to dynamic negative affective stimuli is gender-dependent

Kuypers, K. P. C., 31 Aug 2017, In : Frontiers in Psychology. 8, 1491.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access

Escitalopram Decreases Cross-Regional Functional Connectivity within the Default-Mode Network

van de Ven, V., Wingen, M., Kuypers, K. P. C., Ramaekers, J. G. & Formisano, E., 27 Jun 2013, In : PLOS ONE. 8, 6, 10 p., 68355.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
16 Citations (Scopus)

Inhibition of MDMA-induced increase in cortisol does not prevent acute impairment of verbal memory

Kuypers, K. P. C., de la Torre, R., Farre, M., Pujadas, M. & Ramaekers, J. G., 1 Jan 2013, In : British Journal of Pharmacology. 168, 3, p. 607-617

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)

Involvement of inferior parietal lobules in prospective memory impairment during acute MDMA (ecstasy) intoxication: an event-related fMRI study

Ramaekers, J. G., Kuypers, K. P. C., Wingen, M., Heinecke, A. & Formisano, E., 1 Jan 2009, In : Neuropsychopharmacology. 34, 7, p. 1641-1648

Research output: Contribution to journalArticleAcademicpeer-review

22 Citations (Scopus)

MDMA, cannabis, and cocaine produce acute dissociative symptoms

van Heugten-Van der Kloet, D., Giesbrecht, T., van Wel, J., Bosker, W. M., Kuypers, K. P. C., Theunissen, E. L., Spronk, D. B., Verkes, R. J., Merckelbach, H. & Ramaekers, J. G., 30 Aug 2015, In : Psychiatry Research. 228, 3, p. 907-912 6 p.

Research output: Contribution to journalArticleAcademicpeer-review

MDMA (ecstasy) effects on actual driving performance before and after sleep deprivation, as function of dose and concentration in blood and oral fluid

Bosker, W. M., Kuypers, K. P. C., Conen, S., Kauert, G. F., Toennes, S. W., Skopp, G. & Ramaekers, J. G., Aug 2012, In : Psychopharmacology. 222, 3, p. 367-376 10 p.

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)

MDMA and alcohol effects, combined and alone, on objective and subjective measures of actual driving performance and psychomotor function

Kuypers, K. P. C., Samyn, N. & Ramaekers, J. G., 1 Jan 2006, In : Psychopharmacology. 187, p. 467-475

Research output: Contribution to journalArticleAcademicpeer-review

56 Citations (Scopus)

MDMA-induced dissociative state not mediated by the 5-HT2A receptor

Puxty, D. J., Ramaekers, J. G., de la Torre, R., Farré, M., Pizarro, N., Pujadas, M. & Kuypers, K. P. C., 11 Jul 2017, In : Frontiers in Pharmacology. 8, 9 p., 455.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access

MDMA-induced indifference to negative sounds is mediated by the 5-HT2A receptor

Kuypers, K. P. C., de la Torre, R., Farre, M., Pizarro, N., Xicota, L. & Ramaekers, J. G., Feb 2018, In : Psychopharmacology. 235, 2, p. 481-490 10 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access

MDMA intoxication and verbal memory performance: a placebo-controlled pharmaco-MRI study

Kuypers, K. P. C., Wingen, M., Heinecke, A., Formisano, E. & Ramaekers, J. G., 1 Jan 2011, In : Journal of Psychopharmacology. 25, 8, p. 1053-1061

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)

Medicinal Delta(9)-tetrahydrocannabinol (dronabinol) impairs on-the-road driving performance of occasional and heavy cannabis users but is not detected in Standard Field Sobriety Tests

Bosker, W. M., Kuypers, K. P. C., Theunissen, E. L., Surinx, A., Blankespoor, R. J., Skopp, G., Jeffery, W. K., Walls, H. C., van Leeuwen, C. J. & Ramaekers, J. G., Oct 2012, In : Addiction. 107, 10, p. 1837-1844 8 p.

Research output: Contribution to journalArticleAcademicpeer-review

18 Citations (Scopus)

Memory and mood during MDMA intoxication, with and without memantine pretreatment

de Sousa Fernandes Perna, E. B., Theunissen, E. L., Kuypers, K. P. C., Heckman, P., de la Torre, R., Farre, M. & Ramaekers, J. G., Dec 2014, In : Neuropharmacology. 87, p. 198-205 8 p.

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)

Memory and mood during the night and in the morning after repeated evening doses of MDMA

Kuypers, K. P. C., Wingen, M. & Ramaekers, J. G., 1 Jan 2008, In : Journal of Psychopharmacology. 22, 8, p. 895-903

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)

Mephedrone and Alcohol Interactions in Humans

Papaseit, E., Pérez-Mañá, C., de Sousa Fernandes Perna, E. B., Olesti, E., Mateus, J., Kuypers, K. P. C., Theunissen, E. L., Fonseca, F., Torrens, M., Ramaekers, J. G., de la Torre, R. & Farré, M., 28 Jan 2020, In : Frontiers in Pharmacology. 10, 17 p., 1588.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access

Methylphenidate reduces functional connectivity of nucleus accumbens in brain reward circuit

Ramaekers, J. G., Evers, E. A., Theunissen, E. L., Kuypers, K. P. C., Goulas, A. & Stiers, P., Sep 2013, In : Psychopharmacology. 229, 2, p. 219-226 8 p.

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)

Motives and Side-Effects of Microdosing With Psychedelics Among Users

Hutten, N. R. P. W., Mason, N. L., Dolder, P. C. & Kuypers, K. P. C., Jul 2019, In : International Journal of Neuropsychopharmacology. 22, 7, p. 426-434 9 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access

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., May 2017, In : Journal of Psychopharmacology. 31, 5, p. 589–598 10 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access

Neurocognitive performance following acute mephedrone administration, with and without alcohol

de Sousa Fernandes Perna, E. B., Papaseit, E., Pérez-Mañá, C., Mateus, J., Theunissen, E. L., Kuypers, K. P. C., de la Torre, R., Farré, M. & Ramaekers, J. G., Dec 2016, In : Journal of Psychopharmacology. 30, 12, p. 1305–1312 8 p.

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

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., Bos, W. & Ramaekers, J. G., 27 Jun 2014, In : PLOS ONE. 9, 6, 14 p., e100719.

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)

Out of the box: A psychedelic model to study the creative mind

Kuypers, K. P. C., Jun 2018, In : Medical Hypotheses. 115, p. 13-16 4 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access

Peripheral endocannabinoid concentrations are not associated with verbal memory impairment during MDMA intoxication

Haijen, E., Farre, M., de la Torre, R., Pastor, A. M., Olesti, E., Pizarro, N., Ramaekers, J. G. & Kuypers, K. P. C., Mar 2018, In : Psychopharmacology. 235, 3, p. 709-717 9 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access

Pharmacokinetic properties of 4-fluoroamphetamine in serum and oral fluid after oral ingestion

Toennes, S. W., Schneider, D., Pogoda, W., Paulke, A., Wunder, C., Theunissen, E. L., Kuypers, K. P. C., de Sousa Fernandes Perna, E. & Ramaekers, J. G., Jul 2019, In : Drug Testing and Analysis. 11, 7, p. 1028-1034 7 p.

Research output: Contribution to journalArticleAcademicpeer-review

Psychedelic medicine: The biology underlying the persisting psychedelic effects

Kuypers, K. P. C., Apr 2019, In : Medical Hypotheses. 125, p. 21-24 4 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access