Evidence map›Paper›PMID 34569931›Full record

SynthesiseLife2021

Convergent and divergent brain structural and functional abnormalities associated with developmental dyslexia.

Xiaohui Yan, Ke Jiang, Hui Li, Ziyi Wang, Kyle Perkins, Fan Cao

Abstract readMeta-Analysis
In one paragraph

Synthesis in eLife, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing 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

31 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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  12. Clinical implications of brain asymmetries.Nature reviews. Neurology · 2024
    Review
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  17. Cerebellar Neuromodulation Impacts Reading Fluency in Young Adults.Neurobiology of language (Cambridge, Mass.) · 2024
    Article
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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.

Xiaohui YanDepartment of Psychology, Sun Yat-Sen University, Guangzhou, China.ORCID 0000-0002-2801-3335
Ke JiangDepartment of Psychology, Sun Yat-Sen University, Guangzhou, China.
Hui LiDepartment of Preschool Education, Anyang Preschool Education College, Anyang, China.
Ziyi WangSchool of Foreign Language, Jining University, Jining, China.
Kyle PerkinsFlorida International University (Retired Professor), Miami, United States.
Fan CaoDepartment of Psychology, Sun Yat-Sen University, Guangzhou, China.ORCID 0000-0002-3786-1600

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Brain abnormalities in the reading network have been repeatedly reported in individuals with developmental dyslexia (DD); however, it is still not totally understood where the structural and functional abnormalities are consistent/inconsistent across languages. In the current multimodal meta-analysis, we found convergent structural and functional alterations in the left superior temporal gyrus across languages, suggesting a neural signature of DD. We found greater reduction in grey matter volume and brain activation in the left inferior frontal gyrus in morpho-syllabic languages (e.g. Chinese) than in alphabetic languages, and greater reduction in brain activation in the left middle temporal gyrus and fusiform gyrus in alphabetic languages than in morpho-syllabic languages. These language differences are explained as consequences of being DD while learning a specific language. In addition, we also found brain regions that showed increased grey matter volume and brain activation, presumably suggesting compensations and brain regions that showed inconsistent alterations in brain structure and function. Our study provides important insights about the etiology of DD from a cross-linguistic perspective with considerations of consistency/inconsistency between structural and functional alterations.

Indexed as

AdolescentAdultBrainBrain MappingChildDyslexiaFemaleHumansLanguageLearningMagnetic Resonance ImagingMaleYoung Adultalphabetic languagedyslexiahumanmorpho-syllabic languagemultimodal meta-analysisneuroscience

Identifiers

PMID34569931
PMCPMC8497057

What OpenQuestion holds

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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.