Evidence map›Paper›PMID 32980206›Full record

ArticleSchizophrenia research2020

Sleep spindle activity in childhood onset schizophrenia: Diminished and associated with clinical symptoms.

Andjela Markovic, Ashura Buckley, David I Driver, Diane Dillard-Broadnax, Peter A Gochman, Kerstin Hoedlmoser, Judith L Rapoport, Leila Tarokh

Open access · greenAbstract read
In one paragraph

Article in Schizophrenia research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 18% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Pooled it
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  8. Joint Heritability of Sleep EEG Spindle Activity and Thalamic Volume in Early Adolescence.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
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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

8 authors at 4 institutions in 3 countries.

Andjela MarkovicUniversity Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Switzerland; Graduate School for Health Sciences, University of Bern, Switzerland.
Ashura BuckleyNational Institute of Mental Health, National Institutes of Health, Bethesda, MD, United States of America.
David I DriverNational Institute of Mental Health, National Institutes of Health, Bethesda, MD, United States of America.
Diane Dillard-BroadnaxNational Institute of Mental Health, National Institutes of Health, Bethesda, MD, United States of America.
Peter A GochmanNational Institute of Mental Health, National Institutes of Health, Bethesda, MD, United States of America.
Kerstin HoedlmoserLaboratory for Sleep, Cognition and Consciousness Research, Department of Psychology, Centre for Cognitive Neuroscience, University of Salzburg, Austria.
Judith L RapoportNational Institute of Mental Health, National Institutes of Health, Bethesda, MD, United States of America.
Leila TarokhUniversity Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Switzerland. Electronic address: leila.tarokh@upd.unibe.ch.
National Institutes of Health · USNational Institute of Mental Health · USUniversity of Bern · CHUniversity of Salzburg · AT

Funding

Childhood Onset SchizophreniaZIAMH002581 · NIMH · NATIONAL INSTITUTE OF MENTAL HEALTH · PI RAPOPORT, JUDITH L. · 2009 to 2017
$25.5M
YALE CENTER FOR THE: LEARNING &ATTENTIONP41RR013642 · NCRR · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI LIN, JACK J · 1998 to 2011
$21.9M
Intramural NIH HHS ZIA MH002581NCRR NIH HHS P41 RR013642
6 · The paper itself

Abstract

Neuroimaging studies of childhood onset schizophrenia (COS), a rare yet severe form of schizophrenia with an onset before the age of 13 years, have shown continuity with adult onset schizophrenia. Previous research in adult patients has shown reduced sleep spindle activity, transient oscillations in the sleep electroencephalogram (EEG) generated through thalamocortical loops. The current study examines sleep spindle activity in patients with COS. Seventeen children and adolescents with COS (16 years ±6.6) underwent overnight sleep EEG recordings. Sleep spindle activity was compared between patients with COS and age and gender matched controls and correlated with clinical symptom severity. We found pronounced deficits in sleep spindle amplitude, duration, density and frequency in patients with COS (effect size = 0.61 to 1.96; dependent on metric and EEG derivation). Non-rapid eye movement (NREM) sleep EEG power and coherence in the sigma band (11-16 Hz) corresponding to spindle activity were also markedly diminished in patients with COS as compared to controls. Furthermore, the degree of deficit in power and coherence of spindles was strongly associated with clinician rated hallucinations and positive symptoms over widespread cortical regions. Our finding of diminished spindle activity and its association with hallucinations likely reflect dysfunction of the thalamocortical circuits in children and adolescents with COS. Given the relative ease of sleep EEG recordings in vulnerable populations, this study highlights the potential of such recordings to characterize brain function in schizophrenia.

Indexed as

SchizophreniaSchizophrenia, ChildhoodAdolescentAdultChildElectroencephalographyHumansSleepAdolescentBiomarkerSchizophreniaSleepSpindle

Identifiers

PMID32980206
PMCPMC7704640
OpenAlexW2997901679

What OpenQuestion holds

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Registered trials

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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.