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Johannes G. Ramaekers

Johannes G. Ramaekers

D-Index & Metrics

Psychology

D-Index
75
Citations
17141
World Ranking
1812
National Ranking
104

Johannes G. Ramaekers publication distribution in Psychology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Psychology in 2026. The highlighted bar marks where Johannes G. Ramaekers sits on this spectrum.

31–40 publications: 6 scientists 41–50 publications: 52 scientists 51–60 publications: 138 scientists 61–70 publications: 299 scientists 71–80 publications: 461 scientists 81–90 publications: 605 scientists 91–100 publications: 713 scientists 101–110 publications: 736 scientists 111–120 publications: 686 scientists 121–130 publications: 670 scientists 131–140 publications: 644 scientists 141–150 publications: 597 scientists 151–160 publications: 576 scientists 161–170 publications: 477 scientists 171–180 publications: 450 scientists 181–190 publications: 397 scientists 191–200 publications: 343 scientists 201–210 publications: 328 scientists 211–220 publications: 313 scientists 221–230 publications: 283 scientists 231–240 publications: 226 scientists 241–250 publications: 196 scientists 251–260 publications: 201 scientists 261–270 publications: 171 scientists 271–280 publications: 151 scientists 281–290 publications: 139 scientists 291–300 publications: 113 scientists 301–310 publications: 102 scientists 311–320 publications: 100 scientists 321–330 publications: 76 scientists 331–340 publications: 92 scientists 341–350 publications: 85 scientists 351–360 publications: 69 scientists 361–370 publications: 71 scientists 371–380 publications: 63 scientists 381–390 publications: 58 scientists 391–400 publications: 57 scientists 401–410 publications: 43 scientists 411–420 publications: 33 scientists 421–430 publications: 50 scientists 431–440 publications: 41 scientists 441–450 publications: 32 scientists 451–460 publications: 27 scientists 461–470 publications: 28 scientists 471–480 publications: 25 scientists 481–490 publications: 28 scientists 491–500 publications: 20 scientists 501–510 publications: 23 scientists 511–520 publications: 26 scientists 521–530 publications: 17 scientists 531–540 publications: 21 scientists 541–550 publications: 14 scientists 551–560 publications: 16 scientists 561–570 publications: 10 scientists 571–580 publications: 22 scientists 581–590 publications: 9 scientists 591–600 publications: 14 scientists 601–610 publications: 9 scientists 611–620 publications: 11 scientists 621–630 publications: 4 scientists 631–640 publications: 7 scientists 641–650 publications: 5 scientists 651–660 publications: 10 scientists 661–670 publications: 8 scientists 671–680 publications: 8 scientists 681–690 publications: 4 scientists 691–700 publications: 3 scientists 701–704 publications: 4 scientists 705+ publications: 100 scientists
31 publications 705+

This scientist: 320 publications — 89th percentile

89% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 705 publications or more.

Johannes G. Ramaekers D-index placement in Psychology in 2026

The chart shows the D-index (discipline H-index) distribution of Psychology scientists ranked by Research.com in 2026. The highlighted bar marks where Johannes G. Ramaekers sits on this spectrum.

30–31 D-Index: 398 scientists 32–33 D-Index: 702 scientists 34–35 D-Index: 671 scientists 36–37 D-Index: 659 scientists 38–39 D-Index: 641 scientists 40–41 D-Index: 671 scientists 42–43 D-Index: 617 scientists 44–45 D-Index: 558 scientists 46–47 D-Index: 495 scientists 48–49 D-Index: 487 scientists 50–51 D-Index: 445 scientists 52–53 D-Index: 390 scientists 54–55 D-Index: 408 scientists 56–57 D-Index: 345 scientists 58–59 D-Index: 325 scientists 60–61 D-Index: 321 scientists 62–63 D-Index: 248 scientists 64–65 D-Index: 290 scientists 66–67 D-Index: 218 scientists 68–69 D-Index: 219 scientists 70–71 D-Index: 215 scientists 72–73 D-Index: 183 scientists 74–75 D-Index: 169 scientists 76–77 D-Index: 132 scientists 78–79 D-Index: 137 scientists 80–81 D-Index: 120 scientists 82–83 D-Index: 112 scientists 84–85 D-Index: 86 scientists 86–87 D-Index: 101 scientists 88–89 D-Index: 83 scientists 90–91 D-Index: 77 scientists 92–93 D-Index: 70 scientists 94–95 D-Index: 78 scientists 96–97 D-Index: 58 scientists 98–99 D-Index: 53 scientists 100–101 D-Index: 57 scientists 102–103 D-Index: 48 scientists 104–105 D-Index: 53 scientists 106–107 D-Index: 46 scientists 108–109 D-Index: 24 scientists 110–111 D-Index: 35 scientists 112–113 D-Index: 27 scientists 114–115 D-Index: 32 scientists 116–117 D-Index: 31 scientists 118–119 D-Index: 22 scientists 120–121 D-Index: 16 scientists 122–123 D-Index: 24 scientists 124–125 D-Index: 18 scientists 126–127 D-Index: 11 scientists 128–129 D-Index: 19 scientists 130–131 D-Index: 10 scientists 132–133 D-Index: 16 scientists 134–135 D-Index: 10 scientists 136–137 D-Index: 12 scientists 138–139 D-Index: 8 scientists 140–141 D-Index: 5 scientists 142–143 D-Index: 12 scientists 144+ D-Index: 98 scientists
30 D-Index 144+

This scientist: 75 D-Index — 85th percentile

85% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 144 D-Index or more.

Overview

Johannes G. Ramaekers is affiliated with Maastricht University in the Netherlands. Their research predominantly spans the fields of psychology and neuroscience, with specific focus on clinical psychology, cellular and molecular neuroscience, pharmacology, cognitive neuroscience, and experimental and cognitive psychology.

The primary themes in their work include:

  • Psychedelics and Drug Studies
  • Neurotransmitter Receptor Influence on Behavior
  • Chemical Synthesis and Alkaloids
  • Cannabis and Cannabinoid Research
  • Biochemical Analysis and Sensing Techniques
  • Forensic Toxicology and Drug Analysis
  • Sleep and Work-Related Fatigue

Ramaekers has contributed numerous publications to a range of scientific journals. Frequent publication venues include:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • European Neuropsychopharmacology
  • Psychopharmacology
  • Journal of Psychopharmacology
  • Frontiers in Psychology

Among their recent papers are:

  • "Me, myself, bye: regional alterations in glutamate and the experience of ego dissolution with psilocybin" (2020, Neuropsychopharmacology)
  • "Effect of Cannabidiol and Δ9-Tetrahydrocannabinol on Driving Performance" (2020, JAMA)
  • "Low Doses of LSD Acutely Increase BDNF Blood Plasma Levels in Healthy Volunteers" (2020, ACS Pharmacology & Translational Science)
  • "Spontaneous and deliberate creative cognition during and after psilocybin exposure" (2021, Translational Psychiatry)
  • "Mood and cognition after administration of low LSD doses in healthy volunteers: A placebo controlled dose-effect finding study" (2020, European Neuropsychopharmacology)

The scientist collaborates frequently with a set of co-authors, including:

  • Natasha L. Mason
  • Kim P. C. Kuypers
  • Eef L. Theunissen
  • Johannes T. Reckweg
  • Stefan W. Toennes

Best Publications

  • Dose related risk of motor vehicle crashes after cannabis use

    J G Ramaekers;G Berghaus;M van Laar;Olaf Heino Drummer

  • High-Potency Marijuana Impairs Executive Function and Inhibitory Motor Control

    Johannes G Ramaekers;Gerhold Kauert;Peter van Ruitenbeek;Eef L Theunissen

  • Neurocognitive performance during acute THC intoxication in heavy and occasional cannabis users

    Johannes Gerardus Ramaekers;G. Kauert;E. Theunissen;Stefan W. Toennes

  • Marijuana, alcohol and actual driving performance

    Johannes Gerardus Ramaekers;H. W. J. Robbe;J. F. O'Hanlon

  • An Experimental Study of Catechol-O-Methyltransferase Val158Met Moderation of delta-9-tetrahydrocannabinol-induced Effects on Psychosis and Cognition

    Cecile Henquet;Araceli Rosa;Lydia Krabbendam;Sergi Papiol

  • Cognition and motor control as a function of Delta9-THC concentration in serum and oral fluid: limits of impairment.

    J.G. Ramaekers;M.R. Moeller;P. van Ruitenbeek;E.L. Theunissen

  • Antidepressants and Driver Impairment: Empirical Evidence From a Standard On-the-Road Test.

    Johannes Gerardus Ramaekers

  • Serotonin and human cognitive performance.

    J. A.J. Schmitt;M. Wingen;J. G. Ramaekers;E. A.T. Evers

  • Characterizing the cognitive effects of cocaine: A comprehensive review

    Desirée B. Spronk;Janelle H.P. van Wel;Johannes G. Ramaekers;Robbert J. Verkes;Robbert J. Verkes

  • Developing Limits for Driving Under Cannabis

    Franjo Grotenhermen;Gero Leson;Gunter Berghaus;Olaf Heino Drummer

  • Effects of loratadine and cetirizine on actual driving and psychometric test performance, and EEG during driving.

    Johannes Gerardus Ramaekers;M. M. Uiterwijk;J. F. O'Hanlon

  • Circulating microRNAs as potential biomarkers for psychiatric and neurodegenerative disorders.

    M.M.J. van den Berg;J. Krauskopf;J.G. Ramaekers;J.C.S. Kleinjans

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

    N. L. Mason;K. P. C. Kuypers;F. Müller;F. Müller;J. Reckweg

  • Antihistamine effects on actual driving performance in a standard test: a summary of Dutch experience, 1989‐94

    J. F. O'Hanlon;Johannes Gerardus Ramaekers

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

    M. V. Uthaug;K. van Oorsouw;K. P. C. Kuypers;M. van Boxtel

  • Ayahuasca enhances creative divergent thinking while decreasing conventional convergent thinking

    Kim Kuypers;J Riba;M de la Fuente Revenga;S Barker

  • 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

    M. V. Uthaug;R. Lancelotta;K. van Oorsouw;K. P. C. Kuypers

  • Tolerance and cross-tolerance to neurocognitive effects of THC and alcohol in heavy cannabis users

    Johannes Gerardus Ramaekers;Eef L. Theunissen;Marjolein de Brouwer;Stefan W. Toennes

  • Cannabidiol (CBD) content in vaporized cannabis does not prevent tetrahydrocannabinol (THC)-induced impairment of driving and cognition

    Thomas R. Arkell;Nicholas Lintzeris;Richard C. Kevin;Johannes G. Ramaekers

  • Acute Effects of 3,4-Methylenedioxymethamphetamine (MDMA) on Behavioral Measures of Impulsivity: Alone and in Combination with Alcohol

    Johannes Gerardus Ramaekers;Kim P. C. Kuypers

  • On-the-road driving performance the morning after bedtime administration of lemborexant in healthy adult and elderly volunteers

    Annemiek Vermeeren;Stefan Jongen;Patricia Murphy;Margaret Moline

Frequent Co-Authors

Eef L. Theunissen
Eef L. Theunissen Maastricht University
Kim P. C. Kuypers
Kim P. C. Kuypers Maastricht University
Joris C. Verster
Joris C. Verster Utrecht University
Wim J. Riedel
Wim J. Riedel Maastricht University
Magí Farré
Magí Farré Autonomous University of Barcelona
Arjan Blokland
Arjan Blokland Maastricht University
Karel Brookhuis
Karel Brookhuis University of Groningen
Robbert-Jan Verkes
Robbert-Jan Verkes Radboud University
Rafael de la Torre
Rafael de la Torre Pompeu Fabra University
Amanda Feilding
Amanda Feilding Beckley Foundation

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