Evidence map›Paper›PMID 33468567›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2021

Focal Sleep Spindle Deficits Reveal Focal Thalamocortical Dysfunction and Predict Cognitive Deficits in Sleep Activated Developmental Epilepsy.

Mark A Kramer, Sally M Stoyell, Dhinakaran Chinappen, Lauren M Ostrowski, Elizabeth R Spencer, Amy K Morgan, Britt Carlson Emerton, Jin Jing, M Brandon Westover, Uri T Eden and 3 more

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
8.7field-weighted citation impact, top 1% 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

56 citing papers in PubMed, 76 citations in OpenAlex.

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  4. Auditory-evoked changes in slow oscillations and spindles correlate with memory consolidation in children with epilepsy and controls.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2026
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  14. Fast ripple band high-frequency activity associated with thalamic sleep spindles in pediatric epilepsy.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 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

13 authors at 4 institutions in 1 country.

Mark A KramerDepartment of Mathematics and Statistics, Boston University, Boston, Massachusetts 02215.
Sally M StoyellDepartment of Neurology, Massachusetts General Hospital, Boston, Massachusetts 02114.
Dhinakaran ChinappenDepartment of Neurology, Massachusetts General Hospital, Boston, Massachusetts 02114.
Lauren M OstrowskiDepartment of Neurology, Massachusetts General Hospital, Boston, Massachusetts 02114.
Elizabeth R SpencerDepartment of Mathematics and Statistics, Boston University, Boston, Massachusetts 02215.
Amy K MorganDepartment of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts 02114.
Britt Carlson EmertonDepartment of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts 02114.
Jin JingDepartment of Neurology, Massachusetts General Hospital, Boston, Massachusetts 02114.
M Brandon WestoverDepartment of Neurology, Massachusetts General Hospital, Boston, Massachusetts 02114.
Uri T EdenDepartment of Mathematics and Statistics, Boston University, Boston, Massachusetts 02215.
Robert StickgoldHarvard Medical School, Boston, Massachusetts 02115.
Dara S ManoachDepartment of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts 02114.ORCID 0000-0001-9208-1167
Catherine J ChuDepartment of Neurology, Massachusetts General Hospital, Boston, Massachusetts 02114 cjchu@mgh.harvard.edu.ORCID 0000-0001-7670-9313
Massachusetts General Hospital · USBoston University · USHarvard University · USBeth Israel Deaconess Medical Center · US

Funding

Sleep-dependent Memory Processing in SchizophreniaR01MH092638 · NIMH · MASSACHUSETTS GENERAL HOSPITAL · PI DARA S MANOACH · 2012 to 2026
$7.4M
Focal Thalamocortical Circuit Dysfunction Mediates Motor and Cognitive Deficits in Developmental EpilepsyR01NS115868 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI CHU, CATHERINE J · 2020 to 2024
$3.4M
Investigation of Sleep in the Intensive Care Unit (ICU-SLEEP)R01NS102190 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI WESTOVER, MICHAEL BRANDON · 2018 to 2022
$3.2M
Identification of Cortical Biomarkers for Seizure Risk in Childhood EpilepsyK23NS092923 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI CHU, CATHERINE J · 2015 to 2020
$1.0M
NIMH NIH HHS R01 MH092638NINDS NIH HHS K23 NS092923NINDS NIH HHS R01 NS102190NINDS NIH HHS R01 NS115868
6 · The paper itself

Abstract

Childhood epilepsy with centrotemporal spikes (CECTS) is the most common focal epilepsy syndrome, yet the cause of this disease remains unknown. Now recognized as a mild epileptic encephalopathy, children exhibit sleep-activated focal epileptiform discharges and cognitive difficulties during the active phase of the disease. The association between the abnormal electrophysiology and sleep suggests disruption to thalamocortical circuits. Thalamocortical circuit dysfunction resulting in pathologic epileptiform activity could hinder the production of sleep spindles, a brain rhythm essential for memory processes. Despite this pathophysiologic connection, the relationship between spindles and cognitive symptoms in epileptic encephalopathies has not been previously evaluated. A significant challenge limiting such work has been the poor performance of available automated spindle detection methods in the setting of sharp activities, such as epileptic spikes. Here, we validate a robust new method to accurately measure sleep spindles in patients with epilepsy. We then apply this detector to a prospective cohort of male and female children with CECTS with combined high-density EEGs during sleep and cognitive testing at varying time points of disease. We show that: (1) children have a transient, focal deficit in spindles during the symptomatic phase of disease; (2) spindle rate anticorrelates with spike rate; and (3) spindle rate, but not spike rate, predicts performance on cognitive tasks. These findings demonstrate focal thalamocortical circuit dysfunction and provide a pathophysiological explanation for the shared seizures and cognitive symptoms in CECTS. Further, this work identifies sleep spindles as a potential treatment target of cognitive dysfunction in this common epileptic encephalopathy.

Indexed as

AdolescentCerebral CortexChildChild, PreschoolCognitive DysfunctionElectroencephalographyEpilepsies, PartialFemaleHumansMaleNeural PathwaysSleepThalamusautomated spindle detectionBECTSCECTSlatent state modelRolandic epilepsy

Identifiers

PMID33468567
PMCPMC8115887
OpenAlexW3121923915

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.