Cited by 174Psychedelics and Drug StudiesFunctional Brain Connectivity StudiesHallucinations in medical conditions

Altered network hub connectivity after acute LSD administration

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Müller, Felix, Dolder, Patrick C., Schmidt, André, Liechti, Matthias E., Borgwardt, Stefan·2018·NeuroImage: Clinical

Abstract

LSD is an ambiguous substance, said to mimic psychosis and to improve mental health in people suffering from anxiety and depression. Little is known about the neuronal correlates of altered states of consciousness induced by this substance. Limited previous studies indicated profound changes in functional connectivity of resting state networks after the administration of LSD. The current investigation attempts to replicate and extend those findings in an independent sample. In a double-blind, randomized, cross-over study, 100 μg LSD and placebo were orally administered to 20 healthy participants. Resting state brain activity was assessed by functional magnetic resonance imaging. Within -network and between -network connectivity measures of ten established resting state networks were compared between drug conditions. Complementary analysis were conducted using resting state networks as sources in seed-to-voxel analyses. Acute LSD administration significantly decreased functional connectivity within visual, sensorimotor and auditory networks and the default mode network. While between -network connectivity was widely increased and all investigated networks were affected to some extent, seed-to-voxel analyses consistently indicated increased connectivity between networks and subcortical (thalamus, striatum) and cortical (precuneus, anterior cingulate cortex) hub structures. These latter observations are consistent with findings on the importance of hubs in psychopathological states, especially in psychosis, and could underlay therapeutic effects of hallucinogens as proposed by a recent model.

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Crossref · 10.1016/j.nicl.2018.03.005

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  • During psychedelic experience, fMRI shows the default mode network is modulated, sharply reducing blood flow and connection within its nodes, leading to decreased functional connectivity within the DMN and increased between-network connectivity.

    “It has been demonstrated with functional magnetic resonance imaging (fMRI) that during psychedelic experience, the DMN is modulated, which sharply reduces blood flow and connection within its nodes [46], leading to decreased functional connectivity within the DMN and increased between-network connectivity [47, 48].”

    From Mindfulness meditation and psychedelics: potential synergies and commonalities (2023) · cites this paper as [48]

    The Results (Within-network connectivity; page unavailable) report decreased coactivation in the medial-posterior DMN under LSD, and the Results (Between-network connectivity; page unavailable) report widespread increases in connectivity between networks. The paper does not report a sharp reduction in blood flow within DMN nodes or establish that such a reduction led to the connectivity changes. (LLM, conf=0.87)

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  1. Jones E. The Thalamus 2007 Cambridge University Press New York

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Authors
Müller, F., Dolder, P. C., Schmidt, A., Liechti, M. E., & Borgwardt, S.
Affiliations
University of Basel (CH)
Corresponding author
Borgwardt, Stefan
Venue
NeuroImage: Clinical
Publisher
Elsevier BV
Published
2018
Volume
18
Pages
694-701
ISSN
2213-1582 (ISSN-L)
OpenAlex
W2792211781
Cited by
174
References
61
Citations by year
2026: 15 · 2025: 21 · 2024: 23 · 2023: 45 · 2022: 22 · 2021: 19 · 2020: 19 · 2019: 6 · 2018: 4
FWCI
14.10
Type
journal article
Language
en
Open access
Locations
  • NeuroImage Clinical (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • edoc (University of Basel) (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • edoc (University of Basel)
Funders
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (320030_170249)
Topics
  • Social Sciences › Psychology › Clinical Psychology › Psychedelics and Drug Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Hallucinations in medical conditions
Keywords
LSD, hallucinogens, resting-state functional connectivity, network hubs, default mode network, seed-to-voxel analysis, altered states of consciousness, psychosis, thalamus, striatum, precuneus, anterior cingulate cortex, visual network, sensorimotor network, auditory network
MeSH terms
Adult, Brain, Brain Mapping, Double-Blind Method, Female, Hallucinogens, Humans, Image Processing, Computer-Assisted, Lysergic Acid Diethylamide, Magnetic Resonance Imaging, Male, Middle Aged, Nerve Net, Cross-Over Studies

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