Evidence map›Paper›PMID 32561673›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2020

Ketamine Affects Prediction Errors about Statistical Regularities: A Computational Single-Trial Analysis of the Mismatch Negativity.

Lilian A Weber, Andreea O Diaconescu, Christoph Mathys, André Schmidt, Michael Kometer, Franz Vollenweider, Klaas E Stephan

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
9.4field-weighted citation impact, top 2% 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

39 citing papers in PubMed, 81 citations in OpenAlex.

  1. Trial
  2. Ketamine reduces the neural distinction between self- and other-produced affective touch: a randomized double-blind placebo-controlled study.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2024
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  7. The Somatosensory Mismatch Negativity.The European journal of neuroscience · 2025
    Review
  8. SPM-30 years and beyond.Cerebral cortex (New York, N.Y. : 1991) · 2025
    Review
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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

7 authors at 5 institutions in 6 countries.

Lilian A WeberTranslational Neuromodeling Unit (TNU), Institute for Biomedical Engineering, University of Zurich and ETH Zurich, 8032 Zurich, Switzerland weber@biomed.ee.ethz.ch.ORCID 0000-0001-9727-9623
Andreea O DiaconescuTranslational Neuromodeling Unit (TNU), Institute for Biomedical Engineering, University of Zurich and ETH Zurich, 8032 Zurich, Switzerland.ORCID 0000-0002-3633-9757
Christoph MathysTranslational Neuromodeling Unit (TNU), Institute for Biomedical Engineering, University of Zurich and ETH Zurich, 8032 Zurich, Switzerland.ORCID 0000-0003-4079-5453
André SchmidtDepartment of Psychiatry, University of Basel, 4001 Basel, Switzerland.ORCID 0000-0001-6055-8397
Michael KometerNeuropharmacology and Brain Imaging, University Hospital of Psychiatry, University of Zurich, 8032 Zurich, Switzerland.
Franz VollenweiderNeuropharmacology and Brain Imaging, University Hospital of Psychiatry, University of Zurich, 8032 Zurich, Switzerland.ORCID 0000-0001-9053-6164
Klaas E StephanTranslational Neuromodeling Unit (TNU), Institute for Biomedical Engineering, University of Zurich and ETH Zurich, 8032 Zurich, Switzerland.ORCID 0000-0002-8594-9092
University of Zurich · CHCentre for Addiction and Mental Health · CAScuola Internazionale Superiore di Studi Avanzati · ITUniversity of Basel · CHWellcome Centre for Human Neuroimaging · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The auditory mismatch negativity (MMN) is significantly reduced in schizophrenia. Notably, a similar MMN reduction can be achieved with NMDA receptor (NMDAR) antagonists. Both phenomena have been interpreted as reflecting an impairment of predictive coding or, more generally, the "Bayesian brain" notion that the brain continuously updates a hierarchical model to infer the causes of its sensory inputs. Specifically, neurobiological interpretations of predictive coding view perceptual inference as an NMDAR-dependent process of minimizing hierarchical precision-weighted prediction errors (PEs), and disturbances of this putative process play a key role in hierarchical Bayesian theories of schizophrenia. Here, we provide empirical evidence for this theory, demonstrating the existence of multiple, hierarchically related PEs in a "roving MMN" paradigm. We applied a hierarchical Bayesian model to single-trial EEG data from healthy human volunteers of either sex who received the NMDAR antagonist S-ketamine in a placebo-controlled, double-blind, within-subject fashion. Using an unrestricted analysis of the entire time-sensor space, our trial-by-trial analysis indicated that low-level PEs (about stimulus transitions) are expressed early (102-207 ms poststimulus), while high-level PEs (about transition probability) are reflected by later components (152-199 and 215-277 ms) of single-trial responses. Furthermore, we find that ketamine significantly diminished the expression of high-level PE responses, implying that NMDAR antagonism disrupts the inference on abstract statistical regularities. Our findings suggest that NMDAR dysfunction impairs hierarchical Bayesian inference about the world's statistical structure. Beyond the relevance of this finding for schizophrenia, our results illustrate the potential of computational single-trial analyses for assessing potential pathophysiological mechanisms.

Indexed as

Models, NeurologicalAcoustic StimulationAdultAuditory PerceptionBayes TheoremBrainDouble-Blind MethodElectroencephalographyEvoked Potentials, AuditoryFemaleHumansKetamineMaleMotivationReceptors, N-Methyl-D-AspartateYoung AdultKetamineReceptors, N-Methyl-D-AspartateHGFhierarchical Gaussian filtermismatch negativityNMDA receptorpredictive codingschizophrenia

Identifiers

PMID32561673
PMCPMC7363468
OpenAlexW3036400676

What OpenQuestion holds

Textmetadata
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.