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2025 ; 17
(1
): 63
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Functional connectivity patterns differ as a function of co-occurring attentional
problems in preschoolers with autism
#MMPMID41131500
Boxberger A
; Chen B
; Olson L
; Cordova M
; Mahmalji J
; Rios A
; Linke AC
; Fishman I
J Neurodev Disord
2025[Oct]; 17
(1
): 63
PMID41131500
show ga
BACKGROUND: Symptoms of attention-deficit/hyperactivity disorder (ADHD) are
common in children with autism spectrum disorder (ASD), and are associated with
greater developmental challenges, poorer clinical outcomes, and alterations in
functional connectivity (FC) of the brain. However, despite the consensus that
ASD and other neurodevelopmental conditions emerge early in life, little is known
about the trajectories of brain and behavioral development during the first years
of life in children with ASD and co-occurring attention problems (AP). METHODS:
In a sample of 122 young children (ages 1.5-5 years) with and without ASD, we
examined whether toddlers and preschoolers with ASD and co-occurring AP already
differ from peers with ASD without co-occurring AP on adaptive and developmental
skills, ASD symptoms, and FC of the frontoparietal and salience networks, which
have been previously linked to ADHD symptoms in older children with ASD and ADHD.
RESULTS: Results of general linear model analyses revealed lower developmental
and adaptive skills across multiple domains in children with ASD and elevated AP
compared with their peers with lower AP, despite equivalent levels of ASD
symptoms. Further, children with ASD and elevated AP showed reduced FC within the
frontoparietal network (p?=?.027), between the frontoparietal and language
networks (p?=?.004), and the frontoparietal and default mode networks (p?=?.046)
in comparison to their peers with lower AP. No group differences in FC of the
salience network were observed (all p?>?.05). CONCLUSIONS: These findings provide
evidence that neurodevelopmental and behavioral differences in children with ASD
and co-occurring AP emerge very early in life, before a reliable diagnosis of
ADHD is typically made. Specifically, these results demonstrate that early
inattention symptoms are associated with unique connectivity patterns in
executive circuitry as early as the first years of life in toddlers and
preschoolers with ASD, likely contributing to the phenotypic and neural
heterogeneity recognized in autism. Thus, our results underscore the importance
of considering co-occurring conditions early in developmental research and
clinical care, as further understanding these trajectories can inform early
interventions during the critical time period when they have the greatest
potential for positive impact.
|*Attention Deficit Disorder with Hyperactivity/physiopathology/diagnostic
imaging/complications/epidemiology
[MESH]