Evidence map›Paper›PMID 32999715›Full record

ArticleHealth information science and systems2020

Variability analysis of epileptic EEG using the maximal overlap discrete wavelet transform.

Jack L Follis, Dejian Lai

Abstract read
In one paragraph

Article in Health information science and systems, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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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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

2 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

2 authors.

Jack L FollisDepartment of Mathematics and Computer Science, University of St. Thomas, 3800 Montrose Boulevard, Houston, TX 77006 USA.
Dejian LaiDepartment of Biostatistics and Data Science, The University of Texas Health Science Center at Houston, School of Public Health, 1200 Herman Pressler Drive, W-1008, Houston, TX 77030 USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo determine if there is a difference in the wavelet variances of seizure and non-seizure channels in the EEG of an epileptic subject.

methodsA six-level decomposition was applied using the Maximal Overlap Discrete Wavelet Transform (MODWT). The wavelet variance and 95% CIs were calculated for each level of the decomposition. The number of changes in variance for each level were found using a change-point detection method of Whitcher. The Kruskal-Wallis test was used to determine if there were differences in the median number of change points within channels and across frequency bands (levels).

resultsNo distinctive pattern was found for the wavelet variances to differentiate the seizure and non-seizure channels. The seizure channels tended to have lower variances for each level and overall, but this pattern only held for one of the three seizure channels (RAST4). The median number of change points did not differ between the seizure and non-seizure channels either within each channel or across the frequency bands.

conclusionThe use of the MODWT in examining the variances and changes in variance did not show specific patterns which differentiate between seizure and non-seizure channels.

Indexed as

EEGEpilepsyKruskal–Wallis testWavelet transformationWhitcher test

Identifiers

PMID32999715
PMCPMC7492322

What OpenQuestion holds

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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.