Evidence map›Paper›PMID 32130173›Full record

ArticleJMIR medical informatics2020

Detection of Postictal Generalized Electroencephalogram Suppression: Random Forest Approach.

Xiaojin Li, Shiqiang Tao, Shirin Jamal-Omidi, Yan Huang, Samden D Lhatoo, Guo-Qiang Zhang, Licong Cui

Open access · goldAbstract read
In one paragraph

Article in JMIR medical informatics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.2field-weighted citation impact, top 23% 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

12 citing papers in PubMed, 17 citations in OpenAlex.

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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 2 institutions in 1 country.

Xiaojin LiDepartment of Neurology, University of Texas Health Science Center, Houston, TX, United States.ORCID https://orcid.org/0000-0003-2273-186X
Shiqiang TaoDepartment of Neurology, University of Texas Health Science Center, Houston, TX, United States.ORCID https://orcid.org/0000-0003-1515-3184
Shirin Jamal-OmidiDepartment of Neurology, University of Texas Health Science Center, Houston, TX, United States.ORCID https://orcid.org/0000-0001-8465-2134
Yan HuangDepartment of Computer Science, University of Kentucky, Lexington, KY, United States.ORCID https://orcid.org/0000-0002-6578-2379
Samden D LhatooDepartment of Neurology, University of Texas Health Science Center, Houston, TX, United States.ORCID https://orcid.org/0000-0001-8626-1137
Guo-Qiang ZhangDepartment of Neurology, University of Texas Health Science Center, Houston, TX, United States.ORCID https://orcid.org/0000-0002-3663-1109
Licong CuiSchool of Biomedical Informatics, University of Texas Health Science Center, Houston, TX, United States.ORCID https://orcid.org/0000-0001-5549-8780
The University of Texas Health Science Center at Houston · USUniversity of Kentucky · US

Funding

Convalescent Plasma to Limit Coronavirus Associated ComplicationsUL1TR003167 · NCATS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI KARP, DANIEL D, MCPHERSON, DAVID D · 2019 to 2023
$45.3M
The Center for SUDEP Research (CSR), Informatics and Data Analytics Core (IDAC)U01NS090408 · NINDS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI ZHANG, GUO-QIANG · 2014 to 2018
$3.8M
NCATS NIH HHS UL1 TR003167NINDS NIH HHS U01 NS090408
6 · The paper itself

Abstract

backgroundSudden unexpected death in epilepsy (SUDEP) is second only to stroke in neurological events resulting in years of potential life lost. Postictal generalized electroencephalogram (EEG) suppression (PGES) is a period of suppressed brain activity often occurring after generalized tonic-clonic seizure, a most significant risk factor for SUDEP. Therefore, PGES has been considered as a potential biomarker for SUDEP risk. Automatic PGES detection tools can address the limitations of labor-intensive, and sometimes inconsistent, visual analysis. A successful approach to automatic PGES detection must overcome computational challenges involved in the detection of subtle amplitude changes in EEG recordings, which may contain physiological and acquisition artifacts.

objectiveThis study aimed to present a random forest approach for automatic PGES detection using multichannel human EEG recordings acquired in epilepsy monitoring units.

methodsWe used a combination of temporal, frequency, wavelet, and interchannel correlation features derived from EEG signals to train a random forest classifier. We also constructed and applied confidence-based correction rules based on PGES state changes. Motivated by practical utility, we introduced a new, time distance-based evaluation method for assessing the performance of PGES detection algorithms.

resultsThe time distance-based evaluation showed that our approach achieved a 5-second tolerance-based positive prediction rate of 0.95 for artifact-free signals. For signals with different artifact levels, our prediction rates varied from 0.68 to 0.81.

conclusionsWe introduced a feature-based, random forest approach for automatic PGES detection using multichannel EEG recordings. Our approach achieved increasingly better time distance-based performance with reduced signal artifact levels. Further study is needed for PGES detection algorithms to perform well irrespective of the levels of signal artifacts.

Indexed as

EEGepilepsygeneralized tonic-clonic seizurepostictal generalized EEG suppressionrandom forest

Identifiers

PMID32130173
PMCPMC7055778
OpenAlexW3005694506

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.