PMID- 32387396 OWN - NLM STAT- MEDLINE DCOM- 20210826 LR - 20210826 IS - 1872-7697 (Electronic) IS - 0167-8760 (Linking) VI - 153 DP - 2020 Jul TI - Resting EEG effective connectivity at the sources in developmental dysphonetic dyslexia. Differences with non-specific reading delay. PG - 135-147 LID - S0167-8760(20)30088-X [pii] LID - 10.1016/j.ijpsycho.2020.04.021 [doi] AB - Previous studies conducted on subjects with dysphonetic dyslexia (DD) reported inefficient timing integration of information from various brain areas. This dysregulation has been referred as neuronal dyschronia or timing deficiency. The present study examines the effective brain connectivity in Dysphonetic Dyslexic subjects (DD) compared to a group of subjects with non-specific reading delay (NSRD). The hypothesis is that the timing defect should be reflected also in the effective connectivity and the subjects with developmental dyslexia have an altered information flow different from the group of children with non-specific reading delay. The quantitative EEG at the sources of 184 children with DD was compared with that of 43 children with NRSD. The Isolated Effective Coherence (iCoh) was calculated among 17 brain regions data driven selected. To assess statistical differences in the EEG connectivity between the two groups, a Linear Mixed Effect (LME) model was applied. Two very important areas perform as hubs in the information flow: one is the left calcarine sulcus, which is more active in the DD group. The second is the left rolandic operculum, which is more active in the NSRD group. In the DD group, the calcarine sulcus is sending information to the right postcentral gyrus, the left paracentral gyrus, the right angular gyrus and the right supplementary motor area. This flow of information occurs in almost all frequency bands, including delta and theta band. Slow connections may indicate less efficient or even pathological information flow. We consider this as a neurophysiological evidence of Boder's model of dyslexia. CI - Copyright (c) 2020. Published by Elsevier B.V. FAU - Bosch-Bayard, Jorge AU - Bosch-Bayard J AD - McGill Centre for Integrative Neuroscience (MCIN), Ludmer Centre for Neuroinformatics and Mental Health, Montreal Neurological Institute (MNI), McGill University, Montreal, Canada. Electronic address: jorge.boschbayard@mcgill.ca. FAU - Girini, Katia AU - Girini K AD - Centro Internazionale dei disturbi di apprendimento, attenzione e iperattivita, (CIDAAI), Milano 20125, Italy. FAU - Biscay, Rolando Jose AU - Biscay RJ AD - Centro de Investigacion en Matematicas. A.C., Jalisco S/N, Col. Valenciana, Guanajuato 36023, Mexico. FAU - Valdes-Sosa, Pedro AU - Valdes-Sosa P AD - The Clinical Hospital of Chengdu Brain Sciences Institute, University of Electronic Science and Technology of China UESTC, Chengdu, China; Cuban Neuroscience Center, Cuba. FAU - Evans, Alan C AU - Evans AC AD - McGill Centre for Integrative Neuroscience (MCIN), Ludmer Centre for Neuroinformatics and Mental Health, Montreal Neurological Institute (MNI), McGill University, Montreal, Canada. FAU - Chiarenza, Giuseppe Augusto AU - Chiarenza GA AD - Centro Internazionale dei disturbi di apprendimento, attenzione e iperattivita, (CIDAAI), Milano 20125, Italy. Electronic address: giuseppe.chiarenza@fastwebnet.it. LA - eng PT - Comparative Study PT - Journal Article DEP - 20200505 PL - Netherlands TA - Int J Psychophysiol JT - International journal of psychophysiology : official journal of the International Organization of Psychophysiology JID - 8406214 SB - IM MH - Brain Waves/physiology MH - Cerebral Cortex/*physiopathology MH - Child MH - *Connectome/methods MH - Developmental Disabilities/*physiopathology MH - Dyslexia/*physiopathology MH - *Electroencephalography/methods MH - Female MH - Humans MH - Male MH - Nerve Net/*physiopathology MH - *Reading OTO - NOTNLM OT - Dysphonetic dyslexia OT - Effective connectivity OT - Non-specific reading delay OT - Unleakage OT - Unmixing OT - qEEG EDAT- 2020/05/11 06:00 MHDA- 2021/08/27 06:00 CRDT- 2020/05/11 06:00 PHST- 2020/02/03 00:00 [received] PHST- 2020/04/21 00:00 [revised] PHST- 2020/04/24 00:00 [accepted] PHST- 2020/05/11 06:00 [pubmed] PHST- 2021/08/27 06:00 [medline] PHST- 2020/05/11 06:00 [entrez] AID - S0167-8760(20)30088-X [pii] AID - 10.1016/j.ijpsycho.2020.04.021 [doi] PST - ppublish SO - Int J Psychophysiol. 2020 Jul;153:135-147. doi: 10.1016/j.ijpsycho.2020.04.021. Epub 2020 May 5.