Evidence map›Paper›PMID 34899515›Full record

ArticleFrontiers in psychology2021

Graph Analysis of EEG Functional Connectivity Networks During a Letter-Speech Sound Binding Task in Adult Dyslexics.

Gorka Fraga-González, Dirk J A Smit, Melle J W Van der Molen, Jurgen Tijms, Cornelis J Stam, Eco J C de Geus, Maurits W Van der Molen

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Frontiers in psychology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
1.3field-weighted citation impact, top 21% 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

4 citing papers in PubMed, 14 citations in OpenAlex.

  1. Article
  2. Article
  3. Dyslexia, the Amsterdam Way.Behavioral sciences (Basel, Switzerland) · 2024
    Review
  4. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 5 institutions in 2 countries.

Gorka Fraga-GonzálezDepartment of Psychology, University of Amsterdam, Amsterdam, Netherlands.
Dirk J A SmitAmsterdam Neuroscience, Amsterdam UMC, Amsterdam, Netherlands.
Melle J W Van der MolenInstitute of Psychology, Leiden University, Leiden, Netherlands.
Jurgen TijmsDepartment of Psychology, University of Amsterdam, Amsterdam, Netherlands.
Cornelis J StamDepartment of Clinical Neuropsychology and MEG Center, VU University Medical Center, Amsterdam, Netherlands.
Eco J C de GeusAmsterdam Neuroscience, Amsterdam UMC, Amsterdam, Netherlands.
Maurits W Van der MolenDepartment of Psychology, University of Amsterdam, Amsterdam, Netherlands.
Amsterdam University Medical Centers · NLLeiden University · NLAmsterdam UMC Location VUmc · NLUniversity Hospital of Zurich · CHUniversity of Amsterdam · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We performed an EEG graph analysis on data from 31 typical readers (22.27 ± 2.53 y/o) and 24 dyslexics (22.99 ± 2.29 y/o), recorded while they were engaged in an audiovisual task and during resting-state. The task simulates reading acquisition as participants learned new letter-sound mappings via feedback. EEG data was filtered for the delta (0.5-4 Hz), theta (4-8 Hz), alpha (8-13 Hz), and beta (13-30 Hz) bands. We computed the Phase Lag Index (PLI) to provide an estimate of the functional connectivity between all pairs of electrodes per band. Then, networks were constructed using a Minimum Spanning Tree (MST), a unique sub-graph connecting all nodes (electrodes) without loops, aimed at minimizing bias in between groups and conditions comparisons. Both groups showed a comparable accuracy increase during task blocks, indicating that they correctly learned the new associations. The EEG results revealed lower task-specific theta connectivity, and lower theta degree correlation over both rest and task recordings, indicating less network integration in dyslexics compared to typical readers. This pattern suggests a role of theta oscillations in dyslexia and may reflect differences in task engagement between the groups, although robust correlations between MST metrics and performance indices were lacking.

Indexed as

dyslexiaEEGletter-speech sound associationsminimum spanning tree (MST)networksphase lag index

Identifiers

PMID34899515
PMCPMC8658451
OpenAlexW3214060876

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

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.