Atypical characteristic changes of surface morphology and structural covariance network in developmental dyslexia

© 2023. Fondazione Società Italiana di Neurologia..

BACKGROUND: Developmental dyslexia (DD) is a neurodevelopmental disorder that is characterized by difficulties with all aspects of information acquisition in the written word, including slow and inaccurate word recognition. The neural basis behind DD has not been fully elucidated.

METHOD: The study included 22 typically developing (TD) children, 16 children with isolated spelling disorder (SpD), and 20 children with DD. The cortical thickness, folding index, and mean curvature of Broca's area, including the triangular part of the left inferior frontal gyrus (IFGtriang) and the opercular part of the left inferior frontal gyrus, were assessed to explore the differences of surface morphology among the TD, SpD, and DD groups. Furthermore, the structural covariance network (SCN) of the triangular part of the left inferior frontal gyrus was analyzed to explore the changes of structural connectivity in the SpD and DD groups.

RESULTS: The DD group showed higher curvature and cortical folding of the left IFGtriang than the TD group and SpD group. In addition, compared with the TD group and the SpD group, the structural connectivity between the left IFGtriang and the left middle-frontal gyrus and the right mid-orbital frontal gyrus was increased in the DD group, and the structural connectivity between the left IFGtriang and the right precuneus and anterior cingulate was decreased in the DD group.

CONCLUSION: DD had atypical structural connectivity in brain regions related to visual attention, memory and which might impact the information input and integration needed for reading and spelling.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:45

Enthalten in:

Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology - 45(2024), 5 vom: 28. Apr., Seite 2261-2270

Sprache:

Englisch

Beteiligte Personen:

Zhang, Yusi [VerfasserIn]
Huang, Jiayang [VerfasserIn]
Huang, Li [VerfasserIn]
Peng, Lixin [VerfasserIn]
Wang, Xiuxiu [VerfasserIn]
Zhang, Qingqing [VerfasserIn]
Zeng, Yi [VerfasserIn]
Yang, Junchao [VerfasserIn]
Li, Zuanfang [VerfasserIn]
Sun, Xi [VerfasserIn]
Liang, Shengxiang [VerfasserIn]

Links:

Volltext

Themen:

Broca
Developmental dyslexia
IFGtriang
Journal Article
Structural covariance network
Surface morphology

Anmerkungen:

Date Completed 17.04.2024

Date Revised 17.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1007/s10072-023-07193-x

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM364880309