Trial reportSchizophrenia bulletin2015
Ketamine Dysregulates the Amplitude and Connectivity of High-Frequency Oscillations in Cortical-Subcortical Networks in Humans: Evidence From Resting-State Magnetoencephalography-Recordings.
Trial report in Schizophrenia bulletin, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 91 papers, 2 of them syntheses that pooled 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.
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.
Who cites it
91 citing papers in PubMed, 2 syntheses or guidelines pooled it, 152 citations in OpenAlex.
- Effects of N-Methyl-d-Aspartate Receptor Antagonists on Gamma-Band Activity During Auditory Stimulation Compared With Electro/Magneto-encephalographic Data in Schizophrenia and Early-Stage Psychosis: A Systematic Review and Perspective.Schizophrenia bulletin · 2024Pooled it
- Cognitive and Neuropathophysiological Outcomes of Gamma-tACS in Dementia: A Systematic Review.Neuropsychology review · 2024Pooled it
- Rapid neuroplasticity changes and response to intravenous ketamine: a randomized controlled trial in treatment-resistant depression.Translational psychiatry · 2023Trial
- Face pareidolia is enhanced by 40 Hz transcranial alternating current stimulation (tACS) of the face perception network.Scientific reports · 2023Trial
- Ketamine metabolites, clinical response, and gamma power in a randomized, placebo-controlled, crossover trial for treatment-resistant major depression.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020Trial
- Ketamine effects on default mode network activity and vigilance: A randomized, placebo-controlled crossover simultaneous fMRI/EEG study.Human brain mapping · 2020Trial
- Reduced auditory evoked gamma-band response and schizophrenia-like clinical symptoms under subanesthetic ketamine.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2019Trial
- Neurophysiological Changes Associated with Antidepressant Response to Ketamine Not Observed in a Negative Trial of Scopolamine in Major Depressive Disorder.The international journal of neuropsychopharmacology · 2019Trial
- Alterations in interhemispheric gamma-band connectivity are related to the emergence of auditory verbal hallucinations in healthy subjects during NMDA-receptor blockade.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2018Trial
- Before the task begins: linking resting-state gamma oscillations to face-name associative memory.Cognitive neurodynamics · 2026Article
- The alpha rhythm: from physiology to behavior.Physiological reviews · 2026Review
- Excessive gamma and beta oscillations in manic states across mood and psychotic disorders.Scientific reports · 2026Article
- Resting-state EEG gamma power predicts immediate and delayed recall in healthy adults.Cognitive neurodynamics · 2025Article
- Neurophysiological correlates of ketamine-induced dissociative state in bipolar disorder: insights from real-world clinical settings.Molecular psychiatry · 2025Article
- Causal role of medial superior frontal cortex on enhancing neural information flow and self-agency judgments in the self-agency network.NeuroImage · 2025Article
- Computational modeling of ketamine-induced changes in gamma-band oscillations: The contribution of parvalbumin and somatostatin interneurons.PLoS computational biology · 2025Article
- Article
- Digital twin brain simulator for real-time consciousness monitoring and virtual intervention using primate electrocorticogram data.NPJ digital medicine · 2025Article
- NMDA receptor antagonist high-frequency oscillations are transmitted via bottom-up feedforward processing.Scientific reports · 2024Article
- The Pathophysiological Underpinnings of Gamma-Band Alterations in Psychiatric Disorders.Life (Basel, Switzerland) · 2024Review
31 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 4 institutions in 2 countries.
Funding
Abstract
Hypofunctioning of the N-methyl-D-aspartate receptor (NMDA-R) has been prominently implicated in the pathophysiology of schizophrenia (ScZ). The current study tested the effects of ketamine, a dissociative anesthetic and NMDA-R antagonist, on resting-state activity recorded with magnetoencephalography (MEG) in healthy volunteers. In a single-blind cross-over design, each participant (n = 12) received, on 2 different sessions, a subanesthetic dose of S-ketamine (0.006 mg/Kg) and saline injection. MEG-data were analyzed at sensor- and source-level in the beta (13-30 Hz) and gamma (30-90 Hz) frequency ranges. In addition, connectivity analysis at source-level was performed using transfer entropy (TE). Ketamine increased gamma-power while beta-band activity was decreased. Specifically, elevated 30-90 Hz activity was pronounced in subcortical (thalamus and hippocampus) and cortical (frontal and temporal cortex) regions, whilst reductions in beta-band power were localized to the precuneus, cerebellum, anterior cingulate, temporal and visual cortex. TE analysis demonstrated increased information transfer in a thalamo-cortical network after ketamine administration. The findings are consistent with the pronounced dysregulation of high-frequency oscillations following the inhibition of NMDA-R in animal models of ScZ as well as with evidence from electroencephalogram-data in ScZ-patients and increased functional connectivity during early illness stages. Moreover, our data highlight the potential contribution of thalamo-cortical connectivity patterns towards ketamine-induced neuronal dysregulation, which may be relevant for the understanding of ScZ as a disorder of disinhibition of neural circuits.
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What OpenQuestion holds
Registered trials
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.