Evidence map›Paper›PMID 42086570›Full record

ArticleNature communications2026

Human brain changes after first psilocybin use.

T Lyons, M Spriggs, L Kerkelä, F E Rosas, L Roseman, P A M Mediano, C Timmermann, L Oestreich, B A Pagni, R J Zeifman and 13 more

Abstract read
In one paragraph

Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

  1. Trial
  2. Effects of psychedelic use on authoritarian attitudes revisited.Journal of psychopharmacology (Oxford, England) · 2026
    Trial
  3. Article
  4. The entropic brain today.Brain : a journal of neurology · 2026
    Review
  5. Review
  6. Article
  7. Article
  8. Speech markers of psychological change following a psychedelic 5-MeO-DMT retreat.Journal of psychopharmacology (Oxford, England) · 2026
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Effects of Psilocybin on Mouse Brain Microstructure.AJNR. American journal of neuroradiology · 2025
    Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Psychedelic enhancement of flexible learning weeks after a single dose.bioRxiv : the preprint server for biology · 2024
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

23 authors.

T LyonsDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.
M SpriggsDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.
L KerkeläUCL Great Ormond Street Institute of Child Health, University College London, London, UK.
F E RosasDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.ORCID 0000-0001-7790-6183
L RosemanDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.ORCID 0000-0001-9990-6029
P A M MedianoCentre for Complexity Science, Imperial College London, London, UK.ORCID 0000-0003-1789-5894
C TimmermannDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.ORCID 0000-0002-2281-377X
L OestreichSchool of Psychology and Australian Institute for Bioengineering and Nanotechnology (AIBN), University of Queensland, Brisbane, QLD, Australia.
B A PagniNYU Langone Center for Psychedelic Medicine, Department of Psychiatry, NYU Grossman School of Medicine, New York, NY, USA.ORCID 0000-0002-9496-7604
R J ZeifmanDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.
A HampshireDepartment of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK.
W TrenderDepartment of Brain Sciences, Imperial College London, London, UK.ORCID 0000-0003-3947-5532
H M DouglassDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.ORCID 0000-0002-4033-385X
M GirnDepartment of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, QC, Canada.ORCID 0000-0003-0455-4273
K GodfreyDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.
H KettnerDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.
F SharifDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.ORCID 0000-0001-6656-4616
L EspasianoDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.
A GazzaleyNeuroscape, Department of Neurology, University of California San Francisco, San Francisco, CA, USA.ORCID 0000-0002-1232-9431
M B WallInvicro London, Hammersmith Hospital, Faculty of Medicine, Imperial College London, London, UK.ORCID 0000-0002-0493-6274
D ErritzoeDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.ORCID 0000-0002-7022-6211
D J NuttDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.ORCID 0000-0002-1286-1401
R L Carhart-HarrisDivision of Psychiatry, Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK. robin.carhart-harris@ucsf.edu.ORCID 0000-0002-6062-7150

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Psychedelics have robust effects on acute brain function and long-term behavior but whether they also cause enduring functional and anatomical brain changes is largely unknown. In an exploratory, placebo-controlled, within-subjects, electroencephalography (EEG), and magnetic resonance imaging (MRI) study in 28 healthy, entirely psychedelic-naive participants, anatomical and functional brain changes are detected from one-hour to one-month after a single high-dose (25 mg) of psilocybin. Increases in cognitive flexibility, psychological insight, and well-being are seen at one-month. Diffusion tensor imaging (DTI) done before and one-month after 25 mg psilocybin reveals decreased axial diffusivity bilaterally in prefrontal-subcortical tracts that correlate with decreases in brain network modularity (fMRI) over the same month. Enduring functional brain changes are largely absent, but network modularity change (numerical decrease) negatively correlates with well-being change (significant increase), in line with previous findings in depression. Increased cortical signal entropy (EEG) at 1- and 2-hours post-dosing predicts improved psychological well-being at one-month. Next-day psychological insight mediates the entropy to well-being relationship. All effects are exclusive to 25 mg psilocybin; no effects occur with a 1 mg psilocybin placebo.

Indexed as

BrainHallucinogensPsilocybinAdultCognitive FlexibilityDiffusion Tensor ImagingElectroencephalographyFemaleHumansMagnetic Resonance ImagingMalePsychological Well-BeingYoung AdultHallucinogensPsilocybin

Identifiers

PMID42086570
PMCPMC13144397

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.