Connectome-wide mega-analysis reveals robust patterns of atypical functional connectivity in Autism
Background - Neuroimaging studies of functional connectivity (FC) in autism have been hampered by small sample sizes and inconsistent findings with regard to whether connectivity is increased or decreased in individuals with autism, whether these alterations affect focal systems or reflect a brain-w...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
1 July 2023
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| In: |
Biological psychiatry
Year: 2023, Volume: 94, Issue: 1, Pages: 29-39 |
| ISSN: | 1873-2402 |
| DOI: | 10.1016/j.biopsych.2022.12.018 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.biopsych.2022.12.018 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0006322322018522 
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| Author Notes: | Iva Ilioska, Marianne Oldehinkel, Alberto Llera, Sidhant Chopra, Tristan Looden, Roselyne Chauvin, Daan Van Rooij, Dorothea L. Floris, Julian Tillmann, Carolin Moessnang, Tobias Banaschewski, Rosemary J. Holt, Eva Loth, Tony Charman, Declan G.M. Murphy, Christine Ecker, Maarten Mennes, Christian F. Beckmann, Alex Fornito, and Jan K. Buitelaar |
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| 245 | 1 | 0 | |a Connectome-wide mega-analysis reveals robust patterns of atypical functional connectivity in Autism |c Iva Ilioska, Marianne Oldehinkel, Alberto Llera, Sidhant Chopra, Tristan Looden, Roselyne Chauvin, Daan Van Rooij, Dorothea L. Floris, Julian Tillmann, Carolin Moessnang, Tobias Banaschewski, Rosemary J. Holt, Eva Loth, Tony Charman, Declan G.M. Murphy, Christine Ecker, Maarten Mennes, Christian F. Beckmann, Alex Fornito, and Jan K. Buitelaar |
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| 520 | |a Background - Neuroimaging studies of functional connectivity (FC) in autism have been hampered by small sample sizes and inconsistent findings with regard to whether connectivity is increased or decreased in individuals with autism, whether these alterations affect focal systems or reflect a brain-wide pattern, and whether these are age and/or sex dependent. - Methods - The study included resting-state functional magnetic resonance imaging and clinical data from the EU-AIMS LEAP (European Autism Interventions Longitudinal European Autism Project) and the ABIDE (Autism Brain Imaging Data Exchange) 1 and 2 initiatives of 1824 (796 with autism) participants with an age range of 5-58 years. Between-group differences in FC were assessed, and associations between FC and clinical symptom ratings were investigated through canonical correlation analysis. - Results - Autism was associated with a brainwide pattern of hypo- and hyperconnectivity. Hypoconnectivity predominantly affected sensory and higher-order attentional networks and correlated with social impairments, restrictive and repetitive behavior, and sensory processing. Hyperconnectivity was observed primarily between the default mode network and the rest of the brain and between cortical and subcortical systems. This pattern was strongly associated with social impairments and sensory processing. Interactions between diagnosis and age or sex were not statistically significant. - Conclusions - The FC alterations observed, which primarily involve hypoconnectivity of primary sensory and attention networks and hyperconnectivity of the default mode network and subcortex with the rest of the brain, do not appear to be age or sex dependent and correlate with clinical dimensions of social difficulties, restrictive and repetitive behaviors, and alterations in sensory processing. These findings suggest that the observed connectivity alterations are stable, trait-like features of autism that are related to the main symptom domains of the condition. | ||
| 650 | 4 | |a Canonical correlation | |
| 650 | 4 | |a Functional connectivity | |
| 650 | 4 | |a Hyperconnectivity | |
| 650 | 4 | |a Hypoconnectivity | |
| 650 | 4 | |a Networks | |
| 650 | 4 | |a Resting-state | |
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| 700 | 1 | |a Tillmann, Julian |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Holt, Rosemary J. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Loth, Eva |e VerfasserIn |4 aut | |
| 700 | 1 | |a Charman, Tony |e VerfasserIn |4 aut | |
| 700 | 1 | |a Murphy, Declan G. M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Ecker, Christine |e VerfasserIn |4 aut | |
| 700 | 1 | |a Mennes, Maarten |e VerfasserIn |4 aut | |
| 700 | 1 | |a Beckmann, Christian F. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Fornito, Alex |e VerfasserIn |4 aut | |
| 700 | 1 | |a Buitelaar, Jan K. |e VerfasserIn |4 aut | |
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