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Record W4410542724 · doi:10.1002/epd2.70039

Uncoupling in a child with tonic seizures

2025· article· en· W4410542724 on OpenAlexaffabout
Émilie Groulx‐Boivin, Kenneth A. Myers

Bibliographic record

VenueEpileptic Disorders · 2025
Typearticle
Languageen
FieldMedicine
TopicNeonatal and fetal brain pathology
Canadian institutionsMcGill University Health CentreMcGill UniversityMontreal Children's Hospital
Fundersnot available
KeywordsTonic (physiology)MedicinePsychologyNeurologyNeuroscienceAnesthesiaPediatrics

Abstract

fetched live from OpenAlex

A 6-year-old boy with generalized epilepsy presented with super-refractory status epilepticus in the setting of a viral upper respiratory tract infection. Extensive evaluation, including brain magnetic resonance imaging, cerebrospinal fluid analysis, autoimmune encephalitis antibody panel, and metabolic/genetic testing, was unremarkable. Initially, he experienced recurrent electroclinical tonic and tonic-myoclonic seizures; with augmentation of medical therapy, these progressively evolved into seizures with a similar electrographic signature, but minimal clinical correlate (bradycardia and breathing pauses), indicating gradual uncoupling (Figure 1, Video 1). Electroclinical dissociation, or uncoupling, refers to the persistence of electrographic seizure activity on electroencephalogram without corresponding clinical manifestations. This phenomenon, mainly described in neonates, often follows treatment with anti-seizure medications, such as phenobarbital or phenytoin, although its underlying mechanism remains poorly understood.1 Differences in chloride transporter maturation across brain regions may contribute to selective inhibition of subcortical structures by GABAergic drugs, effectively suppressing convulsive activity while allowing electrographic cortical seizures to persist.2 Dr. Myers is or has been a site PI for studies sponsored by LivaNova and Ultragenyx, and sits or has sat on advisory boards for Jazz Pharmaceuticals, AS2 Bio, Epilepsy Canada, Ring 20 Research and Support, and the Koolen-de Vries Syndrome Foundation. The remaining authors have no conflicts of interest. Data sharing is not applicable to this article as no new data were created or analyzed in this study. Data S1. Data S2. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Which of the following best describes uncoupling? What is a proposed mechanism for uncoupling following treatment with GABAergic drugs? Which of the following statements is correct? Answers may be found in the Supporting information.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.517
Threshold uncertainty score0.347

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.003
GPT teacher head0.237
Teacher spread0.234 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2025
Admission routes2
Has abstractyes

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