Evidence map›Paper›PMID 30114248›Full record

ArticlePloS one2018

The blessing of Dimensionality: Feature Selection outperforms functional connectivity-based feature transformation to classify ADHD subjects from EEG patterns of phase synchronisation.

Ernesto Pereda, Miguel García-Torres, Belén Melián-Batista, Soledad Mañas, Leopoldo Méndez, Julián J González

Abstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. What Has Been Learned from Using EEG Methods in Research of ADHD?Current topics in behavioral neurosciences · 2022
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  8. Article
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  10. Review
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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

6 authors.

Ernesto PeredaElectrical Engineering and Bioengineering Group, Department of Industrial Engineering & Instituto Universitario de Neurociencia (IUNE), Universidad de La Laguna, Santa Cruz de Tenerife, Spain.ORCID 0000-0001-5965-164X
Miguel García-TorresDivision of Computer Science, Universidad Pablo de Olavide, ES-41013 Seville, Spain.ORCID 0000-0002-6867-7080
Belén Melián-BatistaDepartment of Informatics and Systems Engineering, University of La Laguna, Santa Cruz de Tenerife, Spain.
Soledad MañasUnit of Clinical Neurophysiology, Teaching Hospital Ntra. Sra. de La Candelaria, Santa Cruz de Tenerife, Spain.
Leopoldo MéndezUnit of Clinical Neurophysiology, Teaching Hospital Ntra. Sra. de La Candelaria, Santa Cruz de Tenerife, Spain.
Julián J GonzálezDepartment of Basic Medical Sciences, University of La Laguna, Santa Cruz de Tenerife, Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Functional connectivity (FC) characterizes brain activity from a multivariate set of N brain signals by means of an NxN matrix A, whose elements estimate the dependence within each possible pair of signals. Such matrix can be used as a feature vector for (un)supervised subject classification. Yet if N is large, A is highly dimensional. Little is known on the effect that different strategies to reduce its dimensionality may have on its classification ability. Here, we apply different machine learning algorithms to classify 33 children (age [6-14 years]) into two groups (healthy controls and Attention Deficit Hyperactivity Disorder patients) using EEG FC patterns obtained from two phase synchronisation indices. We found that the classification is highly successful (around 95%) if the whole matrix A is taken into account, and the relevant features are selected using machine learning methods. However, if FC algorithms are applied instead to transform A into a lower dimensionality matrix, the classification rate drops to less than 80%. We conclude that, for the purpose of pattern classification, the relevant features should be selected among the elements of A by using appropriate machine learning algorithms.

Indexed as

AdolescentAttention Deficit Disorder with HyperactivityBrainChildConnectomeElectroencephalography Phase SynchronizationFemaleHumansImage Processing, Computer-AssistedMachine LearningMalePattern Recognition, Automated

Identifiers

PMID30114248
PMCPMC6095525

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.