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Dorsal and Ventral Stream Function in Children With Developmental Coordination Disorder.

Authors :
Micheletti, Serena
Corbett, Fleur
Atkinson, Janette
Braddick, Oliver
Mattei, Paola
Galli, Jessica
Calza, Stefano
Fazzi, Elisa
Source :
Frontiers in Human Neuroscience; 11/24/2021, Vol. 15, p1-10, 10p
Publication Year :
2021

Abstract

Dorsal stream cortical networks underpin a cluster of visuomotor, visuospatial, and visual attention functions. Sensitivity to global coherence of motion and static form is considered a signature of visual cortical processing in the dorsal stream (motion) relative to the ventral stream (form). Poorer sensitivity to global motion compared to global static form has been found across a diverse range of neurodevelopmental disorders, suggesting a "dorsal stream vulnerability." However, previous studies of global coherence sensitivity in Developmental Coordination Disorder (DCD) have shown conflicting findings. We examined two groups totalling 102 children with DCD (age 5–12 years), using the "Ball in the Grass" psychophysical test to compare sensitivity to global motion and global static form. Motor impairment was measured using the Movement-ABC (M-ABC). Global coherence sensitivity was compared with a typically developing control group (N = 69) in the same age range. Children with DCD showed impaired sensitivity to global motion (p = 0.002), but not global form (p = 0.695), compared to controls. Within the DCD group, motor impairment showed a significant linear relationship with global form sensitivity (p < 0.001). There was also a significant quadratic relationship between motor impairment and global motion sensitivity (p = 0.046), where poorer global motion sensitivity was only apparent with greater motor impairment. We suggest that two distinct visually related components, associated with global form and global motion sensitivity, contribute to DCD differentially over the range of severity of the disorder. Possible neural circuitry underlying these relationships is discussed. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
16625161
Volume :
15
Database :
Complementary Index
Journal :
Frontiers in Human Neuroscience
Publication Type :
Academic Journal
Accession number :
153798915
Full Text :
https://doi.org/10.3389/fnhum.2021.703217