Evidence map›Paper›PMID 26553287›Full record

ArticleScientific reports2015

Interval analysis of interictal EEG: pathology of the alpha rhythm in focal epilepsy.

Jan Pyrzowski, Mariusz Siemiński, Anna Sarnowska, Joanna Jedrzejczak, Walenty M Nyka

Abstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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2 · The registry

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3 · Its place in the literature

Who cites it

21 citing papers in PubMed.

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  20. Slower alpha rhythm associates with poorer seizure control in epilepsy.Annals of clinical and translational neurology · 2019
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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Jan PyrzowskiDepartment of Adult Neurology, Medical University of Gdansk, Poland.
Mariusz SiemińskiDepartment of Adult Neurology, Medical University of Gdansk, Poland.
Anna SarnowskaDepartment of Neurology and Epileptology, Medical Centre for Postgraduate Education, Warsaw, Poland.
Joanna JedrzejczakDepartment of Neurology and Epileptology, Medical Centre for Postgraduate Education, Warsaw, Poland.
Walenty M NykaDepartment of Adult Neurology, Medical University of Gdansk, Poland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The contemporary use of interictal scalp electroencephalography (EEG) in the context of focal epilepsy workup relies on the visual identification of interictal epileptiform discharges. The high-specificity performance of this marker comes, however, at a cost of only moderate sensitivity. Zero-crossing interval analysis is an alternative to Fourier analysis for the assessment of the rhythmic component of EEG signals. We applied this method to standard EEG recordings of 78 patients divided into 4 subgroups: temporal lobe epilepsy (TLE), frontal lobe epilepsy (FLE), psychogenic nonepileptic seizures (PNES) and nonepileptic patients with headache. Interval-analysis based markers were capable of effectively discriminating patients with epilepsy from those in control subgroups (AUC~0.8) with diagnostic sensitivity potentially exceeding that of visual analysis. The identified putative epilepsy-specific markers were sensitive to the properties of the alpha rhythm and displayed weak or non-significant dependences on the number of antiepileptic drugs (AEDs) taken by the patients. Significant AED-related effects were concentrated in the theta interval range and an associated marker allowed for identification of patients on AED polytherapy (AUC~0.9). Interval analysis may thus, in perspective, increase the diagnostic yield of interictal scalp EEG. Our findings point to the possible existence of alpha rhythm abnormalities in patients with epilepsy.

Indexed as

AdolescentAdultAgedAlpha RhythmArea Under CurveElectroencephalographyEpilepsies, PartialEpilepsy, Frontal LobeEpilepsy, Temporal LobeFemaleHeadacheHumansMaleMiddle AgedRetrospective StudiesROC Curve

Identifiers

PMID26553287
PMCPMC4639771

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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.