Evidence map›Paper›PMID 33122651›Full record

ArticleScientific reports2020

The multimodal Ganzfeld-induced altered state of consciousness induces decreased thalamo-cortical coupling.

Timo Torsten Schmidt, Nisha Jagannathan, Michal Ljubljanac, Ann Xavier, Till Nierhaus

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.0field-weighted citation impact, top 15% of its field
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

16 citing papers in PubMed, 27 citations in OpenAlex.

  1. Trial
  2. Article
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  4. Review
  5. Psilocybin: From Psychiatric Pariah to Perceived Panacea.The American journal of psychiatry · 2025
    Review
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  8. The Role of Momentary Dissociation in the Sensory Cortex: A Neurophysiological Review and its Implications for Maladaptive Daydreaming.Medical science monitor : international medical journal of experimental and clinical research · 2024
    Review
  9. Article
  10. The hidden structure of consciousness.Frontiers in psychology · 2024
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. 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

5 authors at 2 institutions in 1 country.

Timo Torsten SchmidtNeurocomputation and Neuroimaging Unit (NNU), Department of Education and Psychology, Freie Universität Berlin, Habelschwerdter Allee 45, 14195, Berlin, Germany. timo.t.schmidt@fu-berlin.de.ORCID 0000-0003-1612-1301
Nisha JagannathanInstitute of Cognitive Science, University of Osnabrück, 49076, Osnabrück, Germany.ORCID 0000-0002-7328-1718
Michal LjubljanacInstitute of Cognitive Science, University of Osnabrück, 49076, Osnabrück, Germany.
Ann XavierInstitute of Cognitive Science, University of Osnabrück, 49076, Osnabrück, Germany.
Till NierhausNeurocomputation and Neuroimaging Unit (NNU), Department of Education and Psychology, Freie Universität Berlin, Habelschwerdter Allee 45, 14195, Berlin, Germany.ORCID 0000-0003-0906-592X
Osnabrück University · DEMax Planck Institute for Human Cognitive and Brain Sciences · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Different pharmacologic agents have been used to investigate the neuronal underpinnings of alterations in consciousness states, such as psychedelic substances. Special attention has been drawn to the role of thalamic filtering of cortical input. Here, we investigate the neuronal mechanisms underlying an altered state of consciousness (ASC) induced by a non-pharmacological procedure. During fMRI scanning, N = 19 human participants were exposed to multimodal Ganzfeld stimulation, a technique of perceptual deprivation where participants are exposed to intense, unstructured, homogenous visual and auditory stimulation. Compared to pre- and post-resting-state scans, the Ganzfeld data displayed a progressive decoupling of the thalamus from the cortex. Furthermore, the Ganzfeld-induced ASC was characterized by increased eigenvector centrality in core regions of the default mode network (DMN). Together, these findings can be interpreted as an imbalance of sensory bottom-up signaling and internally-generated top-down signaling. This imbalance is antithetical to psychedelic-induced ASCs, where increased thalamo-cortical coupling and reduced DMN activity were observed.

Indexed as

Consciousness DisordersAdultCerebral CortexElectroencephalographyFemaleHumansMagnetic Resonance ImagingMaleRetrospective StudiesThalamusYoung Adult

Identifiers

PMID33122651
PMCPMC7596232
OpenAlexW3096132642

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.