Fisher PM

Neurobiology Research Unit, Copenhagen University Hospital, Copenhagen, Denmark.

23 papers · 10 preprints · ORCID

ArticlePsilocybin

Serotonergic psychedelics induce distinct patterns of metabolic activity and covariance within biologically informed rat brain networks.

Gudmundsen F, Czurylo J, Rijsketic DR +10

Europe PMC2026
ArticlePsilocybin

Psilocybin's effect on human brain synaptic plasticity.

Johansen A, Plavén-Sigray P, Madsen MK +14

Europe PMC2026
ArticlePsilocybin

Multi-metric evaluations of acute psychedelic effects on fMRI brain entropy.

McCulloch DE, Olsen AS, Ozenne B +6

Europe PMC2026
ArticlePsilocybin

Effects of psilocybin on sleep quality and brain microstructure in chronic cluster headache.

Brendstrup-Brix K, Ozenne B, Fisher PM +10

Europe PMC2026
PreprintPsilocybin

Psilocybin acutely reduces low-frequency BOLD power and frequency-specific connectivity

Olsen AS, Larsen K, McCulloch DE +6

Europe PMC2026
ArticlePsilocybin

An international mega-analysis of psychedelic drug effects on brain circuit function.

Girn M, Doss MK, Roseman L +24

Europe PMC2026
PreprintPsilocybin

Psychedelics distinctly alter brain entropy and complexity compared to psychostimulants

Larsen K, Fisher PM, McCulloch DE +11

Europe PMC2026
PreprintPsilocybin

Psilocybin’s effect on human brain synaptic plasticity

Johansen A, Plavén-Sigray P, Madsen MK +14

Europe PMC2025
PreprintLSD

Molecular, haemodynamic and functional effects of LSD in the human brain

McCulloch DE, Larsen K, Johansen A +19

Europe PMC2025
ArticlePsilocybin

Single-dose psilocybin therapy for alcohol use disorder: Pharmacokinetics, feasibility, safety and efficacy in an open-label study.

Jensen ME, Stenbæk DS, Messell CD +8

Europe PMC2025
ArticlePsilocybin

Acute psilocybin and ketanserin effects on cerebral blood flow: 5-HT2AR neuromodulation in healthy humans.

Larsen K, Lindberg U, Ozenne B +7

Europe PMC2025
ArticlePsilocybin

Neurochemical characterization of 5-HT<sub>2A</sub>R partial agonists with simultaneous PET-MRI.

Bagdasarian FA, Larsen K, Larsen K +6

Europe PMC2025
PreprintPsilocybin

Acute psilocybin and ketanserin effects on cerebral blood flow: 5-HT2AR neuromodulation in healthy humans

Larsen K, Lindberg U, Ozenne B +7

Europe PMC2024
PreprintPsilocybin

­­­­Single-Dose Psilocybin Therapy for Alcohol Use Disorder: Pharmacokinetics, Feasibility, Safety, and Efficacy in an Open-Label Study

Jensen ME, Stenbæk DS, Messell CD +8

Europe PMC2024
ArticlePsilocybin

Altered states of consciousness in Danish healthy volunteers and recreational users of psilocybin and the possible impact of setting and intention: Danish validation of the five-dimensional altered states of consciousness questionnaire.

Hovmand OR, Madsen MK, Fisher PM +1

Europe PMC2024
ArticlePsilocybin

CCH attack frequency reduction after psilocybin correlates with hypothalamic functional connectivity.

Madsen MK, Petersen AS, Stenbaek DS +15

Europe PMC2024
ArticlePsilocybin

Amygdala response to emotional faces following acute administration of psilocybin in healthy individuals.

Armand S, Larsen K, Larsen K +6

Europe PMC2024
ArticlePsilocybin

Knowledge gaps in psychedelic medicalisation: Preclinical and neuroimaging mechanisms.

McCulloch DE, Lopez JP, Dalla C +7

Europe PMC2024
PreprintPsilocybin

Navigating the chaos of psychedelic fMRI brain-entropy via multi-metric evaluations of acute psilocybin effects

McCulloch DE, Olsen AS, Ozenne B +5

Europe PMC2023
ArticlePsilocybin

Subacute effects of a single dose of psilocybin on biomarkers of inflammation in healthy humans: An open-label preliminary investigation.

Burmester DR, Madsen MK, Szabo A +7

Europe PMC2023
ArticlePsilocybin

Psilocybin modulation of time-varying functional connectivity is associated with plasma psilocin and subjective effects.

Olsen AS, Lykkebo-Valløe A, Ozenne B +7

Europe PMC2022
ArticlePsilocybin

Psilocybin-assisted therapy for reducing alcohol intake in patients with alcohol use disorder: protocol for a randomised, double-blinded, placebo-controlled 12-week clinical trial (The QUANTUM Trip Trial).

Jensen ME, Jensen ME, Stenbæk DS +5

Europe PMC2022
ArticlePsilocybin

Lasting increases in trait mindfulness after psilocybin correlate positively with the mystical-type experience in healthy individuals.

Søndergaard A, Madsen MK, Ozenne B +4

Europe PMC2022
ArticlePsilocybin

Psychedelic resting-state neuroimaging: A review and perspective on balancing replication and novel analyses.

McCulloch DE, Knudsen GM, Barrett FS +10

Europe PMC2022
ArticlePsilocybin

Psilocybin-Induced Mystical-Type Experiences are Related to Persisting Positive Effects: A Quantitative and Qualitative Report.

McCulloch DE, Grzywacz MZ, Madsen MK +6

Europe PMC2022
PreprintPsilocybin

Psilocybin modulation of dynamic functional connectivity is associated with plasma psilocin and subjective effects

Olsen AS, Lykkebo-Valløe A, Ozenne B +7

Europe PMC2021
ArticlePsilocybin

Psilocybin-induced changes in brain network integrity and segregation correlate with plasma psilocin level and psychedelic experience.

Madsen MK, Stenbæk DS, Arvidsson A +7

Europe PMC2021
ArticlePsilocybin

Lasting effects of a single psilocybin dose on resting-state functional connectivity in healthy individuals.

McCulloch DE, Madsen MK, Stenbæk DS +5

Europe PMC2022
PreprintPsilocybin

Psychedelic resting-state neuroimaging: a review and perspective on balancing replication and novel analyses

McCulloch DE, Knudsen GM, Barrett FS +9

Europe PMC2021
PreprintPsilocybin

Psilocybin-induced changes in brain network integrity and segregation correlate with plasma psilocin level and psychedelic experience

Madsen MK, Stenbæk DS, Arvidsson A +7

Europe PMC2021
ArticlePsilocybin

Correction: Psychedelic effects of psilocybin correlate with serotonin 2A receptor occupancy and plasma psilocin levels.

Madsen MK, Fisher PM, Burmester D +10

Europe PMC2019
ArticlePsilocybin

Psychedelic effects of psilocybin correlate with serotonin 2A receptor occupancy and plasma psilocin levels.

Madsen MK, Fisher PM, Burmester D +10

Europe PMC2019
ArticlePsilocybin

Trait Openness and serotonin 2A receptors in healthy volunteers: A positron emission tomography study.

Stenbaek DS, Kristiansen S, Burmester D +4

Europe PMC2019