Disruption to control network function correlates with altered dynamic connectivity in the wider autism spectrum

Autism is a common developmental condition with a wide, variable range of co-occurring neuropsychiatric symptoms. Contrasting with most extant studies, we explored whole-brain functional organization at multiple levels simultaneously in a large subject group reflecting autism's clinical diversi...

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Bibliographic Details
Published in:NeuroImage clinical 2017-01, Vol.15, p.513-524
Main Authors: de Lacy, N, Doherty, D, King, B H, Rachakonda, S, Calhoun, V D
Format: Article
Language:English
Subjects:
Adolescent
Adult
Autism Spectrum Disorder - diagnostic imaging
Autism Spectrum Disorder - physiopathology
Brain - diagnostic imaging
Brain - physiopathology
Child
Female
Humans
Magnetic Resonance Imaging - methods
Male
Middle Aged
Nerve Net - diagnostic imaging
Nerve Net - physiopathology
Regular
Young Adult
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Summary:Autism is a common developmental condition with a wide, variable range of co-occurring neuropsychiatric symptoms. Contrasting with most extant studies, we explored whole-brain functional organization at multiple levels simultaneously in a large subject group reflecting autism's clinical diversity, and present the first network-based analysis of transient brain states, or , in autism. Disruption to inter-network and inter-system connectivity, rather than within individual networks, predominated. We identified coupling disruption in the anterior-posterior default mode axis, and among specific control networks specialized for task start cues and the maintenance of domain-independent task positive status, specifically between the right fronto-parietal and cingulo-opercular networks and default mode network subsystems. These appear to propagate downstream in autism, with significantly dampened subject oscillations between brain states, and dynamic connectivity configuration differences. Our account proposes specific motifs that may provide candidates for neuroimaging biomarkers within heterogeneous clinical populations in this diverse condition.
ISSN:2213-1582
2213-1582
DOI:10.1016/j.nicl.2017.05.024