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Functional connectivity within an anxiety network and associations with anxiety symptom severity in middle-aged adults with and without autism / R. TUNG in Autism Research, 14-10 (October 2021)
[article]
Titre : Functional connectivity within an anxiety network and associations with anxiety symptom severity in middle-aged adults with and without autism Type de document : Texte imprimé et/ou numérique Auteurs : R. TUNG, Auteur ; M. A. REITER, Auteur ; A. LINKE, Auteur ; J. S. KOHLI, Auteur ; M. K. KINNEAR, Auteur ; R. A. MULLER, Auteur ; Ruth A. CARPER, Auteur Article en page(s) : p.2100-2112 Langues : Anglais (eng) Mots-clés : Adult Anxiety/complications/diagnostic imaging Autism Spectrum Disorder/complications/diagnostic imaging Autistic Disorder/complications/diagnostic imaging Brain/diagnostic imaging Brain Mapping Humans Magnetic Resonance Imaging Male Middle Aged Neural Pathways/diagnostic imaging Asd adults anxiety autism functional connectivity resting state fMRI Index. décimale : PER Périodiques Résumé : Anxiety is highly prevalent in autism spectrum disorders (ASDs). However, few functional magnetic resonance imaging (fMRI) studies of ASDs have focused on anxiety (and fewer still on anxiety in middle-aged adults). Thus, relationships between atypical connectivity and anxiety in this population are poorly understood. The current study contrasted functional connectivity within anxiety network regions across adults (40-64?years) with and without autism, and tested for group by functional connectivity interactions on anxiety. Twenty-two adults with ASDs (16 males) and 26 typical control (TC) adults (22 males) completed the Beck Anxiety Inventory and a resting-state fMRI scan. An anxiety network consisting of 12 regions of interest was defined, based on a meta-analysis in TC individuals and two studies on anxiety in ASDs. We tested for main effects of group and group by anxiety interactions on connectivity within this anxiety network, controlling for head motion using ANCOVA. Results are reported at an FDR adjusted threshold of q?0.1 (corrected) and p?0.05 (uncorrected). Adults with ASDs showed higher anxiety and underconnectivity within the anxiety network, mostly involving bilateral insula. Connectivity within the anxiety network in the ASD group showed distinct relationships with anxiety symptoms that did not relate to ASD symptom severity. Functional connectivity involving the bilateral posterior insula was positively correlated with anxiety in the ASD (but not the TC) group. Increased anxiety in middle-aged adults with ASD is associated with atypical functional connectivity, predominantly involving bilateral insula. Results were not related to ASD symptom severity suggesting independence of anxiety-related effects. LAY SUMMARY: Anxiety is very common in adults with autism but the brain basis of this difference is not well understood. We compared functional connectivity between anxiety-related brain regions in middle-aged adults with and without autism. Adults with autism were more anxious and showed weaker functional connections between these regions. Some relationships between functional connectivity and higher anxiety were specific to the autism group. Results suggest that anxiety functions differently in autism. En ligne : http://dx.doi.org/10.1002/aur.2579 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=450
in Autism Research > 14-10 (October 2021) . - p.2100-2112[article] Functional connectivity within an anxiety network and associations with anxiety symptom severity in middle-aged adults with and without autism [Texte imprimé et/ou numérique] / R. TUNG, Auteur ; M. A. REITER, Auteur ; A. LINKE, Auteur ; J. S. KOHLI, Auteur ; M. K. KINNEAR, Auteur ; R. A. MULLER, Auteur ; Ruth A. CARPER, Auteur . - p.2100-2112.
Langues : Anglais (eng)
in Autism Research > 14-10 (October 2021) . - p.2100-2112
Mots-clés : Adult Anxiety/complications/diagnostic imaging Autism Spectrum Disorder/complications/diagnostic imaging Autistic Disorder/complications/diagnostic imaging Brain/diagnostic imaging Brain Mapping Humans Magnetic Resonance Imaging Male Middle Aged Neural Pathways/diagnostic imaging Asd adults anxiety autism functional connectivity resting state fMRI Index. décimale : PER Périodiques Résumé : Anxiety is highly prevalent in autism spectrum disorders (ASDs). However, few functional magnetic resonance imaging (fMRI) studies of ASDs have focused on anxiety (and fewer still on anxiety in middle-aged adults). Thus, relationships between atypical connectivity and anxiety in this population are poorly understood. The current study contrasted functional connectivity within anxiety network regions across adults (40-64?years) with and without autism, and tested for group by functional connectivity interactions on anxiety. Twenty-two adults with ASDs (16 males) and 26 typical control (TC) adults (22 males) completed the Beck Anxiety Inventory and a resting-state fMRI scan. An anxiety network consisting of 12 regions of interest was defined, based on a meta-analysis in TC individuals and two studies on anxiety in ASDs. We tested for main effects of group and group by anxiety interactions on connectivity within this anxiety network, controlling for head motion using ANCOVA. Results are reported at an FDR adjusted threshold of q?0.1 (corrected) and p?0.05 (uncorrected). Adults with ASDs showed higher anxiety and underconnectivity within the anxiety network, mostly involving bilateral insula. Connectivity within the anxiety network in the ASD group showed distinct relationships with anxiety symptoms that did not relate to ASD symptom severity. Functional connectivity involving the bilateral posterior insula was positively correlated with anxiety in the ASD (but not the TC) group. Increased anxiety in middle-aged adults with ASD is associated with atypical functional connectivity, predominantly involving bilateral insula. Results were not related to ASD symptom severity suggesting independence of anxiety-related effects. LAY SUMMARY: Anxiety is very common in adults with autism but the brain basis of this difference is not well understood. We compared functional connectivity between anxiety-related brain regions in middle-aged adults with and without autism. Adults with autism were more anxious and showed weaker functional connections between these regions. Some relationships between functional connectivity and higher anxiety were specific to the autism group. Results suggest that anxiety functions differently in autism. En ligne : http://dx.doi.org/10.1002/aur.2579 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=450 Aberrant "deep connectivity" in autism: A cortico-subcortical functional connectivity magnetic resonance imaging study / J. O. MAXIMO in Autism Research, 12-3 (March 2019)
[article]
Titre : Aberrant "deep connectivity" in autism: A cortico-subcortical functional connectivity magnetic resonance imaging study Type de document : Texte imprimé et/ou numérique Auteurs : J. O. MAXIMO, Auteur ; R. K. KANA, Auteur Article en page(s) : p.384-400 Langues : Anglais (eng) Mots-clés : Asd functional connectivity subcortical supramodal unimodal Index. décimale : PER Périodiques Résumé : The number of studies examining functional brain networks in Autism Spectrum Disorder (ASD) has risen over the last decade and has characterized ASD as a disorder of altered brain connectivity. However, these studies have focused largely on cortical structures, and only a few studies have examined cortico-subcortical connectivity in regions like thalamus and basal ganglia in ASD. The goal of this study was to characterize the functional connectivity between cortex and subcortical regions in ASD using the Autism Brain Imaging Data Exchange (ABIDE-II). Resting-state functional magnetic resonance imaging data were used from 168 typically developing (TD) and 138 ASD participants across different sites from the ABIDE II dataset. Functional connectivity of basal ganglia and thalamus to unimodal and supramodal networks was examined in this study. Overconnectivity (ASD > TD) was found between unimodal (except for medial visual network) and subcortical regions, and underconnectivity (TD > ASD) was found between supramodal (except for default mode and dorsal attention networks) and subcortical regions; positive correlations between ASD phenotype and unimodal-subcortical connectivity were found and negative ones with supramodal-subcortical connectivity. These findings suggest that brain networks heavily involved in sensory processing had higher connectivity with subcortical regions, whereas those involved in higher-order thinking showed decreased connectivity in ASD. In addition, brain-behavior correlations indicated a relationship between ASD phenotype and connectivity. Thus, differences in cortico-subcortical connectivity may have a significant impact on basic and higher-order cognitive processes in ASD. Autism Res 2019, 12: 384-400 (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: This study focused on examining the functional connectivity (synchronization of brain activity across regions) of two types of brain networks (unimodal and supramodal) with subcortical areas (thalamus and basal ganglia) in children, adolescents, and adults with autism spectrum disorder (ASD) and how this relates to ASD phenotype. ASD participants showed overconnectivity in unimodal networks and underconnectivity in supramodal networks. These findings provide new insights into cortico-subcortical connections between basic sensory and high-order cognitive processes. En ligne : http://dx.doi.org/10.1002/aur.2058 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=387
in Autism Research > 12-3 (March 2019) . - p.384-400[article] Aberrant "deep connectivity" in autism: A cortico-subcortical functional connectivity magnetic resonance imaging study [Texte imprimé et/ou numérique] / J. O. MAXIMO, Auteur ; R. K. KANA, Auteur . - p.384-400.
Langues : Anglais (eng)
in Autism Research > 12-3 (March 2019) . - p.384-400
Mots-clés : Asd functional connectivity subcortical supramodal unimodal Index. décimale : PER Périodiques Résumé : The number of studies examining functional brain networks in Autism Spectrum Disorder (ASD) has risen over the last decade and has characterized ASD as a disorder of altered brain connectivity. However, these studies have focused largely on cortical structures, and only a few studies have examined cortico-subcortical connectivity in regions like thalamus and basal ganglia in ASD. The goal of this study was to characterize the functional connectivity between cortex and subcortical regions in ASD using the Autism Brain Imaging Data Exchange (ABIDE-II). Resting-state functional magnetic resonance imaging data were used from 168 typically developing (TD) and 138 ASD participants across different sites from the ABIDE II dataset. Functional connectivity of basal ganglia and thalamus to unimodal and supramodal networks was examined in this study. Overconnectivity (ASD > TD) was found between unimodal (except for medial visual network) and subcortical regions, and underconnectivity (TD > ASD) was found between supramodal (except for default mode and dorsal attention networks) and subcortical regions; positive correlations between ASD phenotype and unimodal-subcortical connectivity were found and negative ones with supramodal-subcortical connectivity. These findings suggest that brain networks heavily involved in sensory processing had higher connectivity with subcortical regions, whereas those involved in higher-order thinking showed decreased connectivity in ASD. In addition, brain-behavior correlations indicated a relationship between ASD phenotype and connectivity. Thus, differences in cortico-subcortical connectivity may have a significant impact on basic and higher-order cognitive processes in ASD. Autism Res 2019, 12: 384-400 (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: This study focused on examining the functional connectivity (synchronization of brain activity across regions) of two types of brain networks (unimodal and supramodal) with subcortical areas (thalamus and basal ganglia) in children, adolescents, and adults with autism spectrum disorder (ASD) and how this relates to ASD phenotype. ASD participants showed overconnectivity in unimodal networks and underconnectivity in supramodal networks. These findings provide new insights into cortico-subcortical connections between basic sensory and high-order cognitive processes. En ligne : http://dx.doi.org/10.1002/aur.2058 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=387 Aberrant functional connectivity of inhibitory control networks in children with autism spectrum disorder / W. VOORHIES in Autism Research, 11-11 (November 2018)
[article]
Titre : Aberrant functional connectivity of inhibitory control networks in children with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : W. VOORHIES, Auteur ; Dina R. DAJANI, Auteur ; S. G. VIJ, Auteur ; S. SHANKAR, Auteur ; T. O. TURAN, Auteur ; L. Q. UDDIN, Auteur Article en page(s) : p.1468-1478 Langues : Anglais (eng) Mots-clés : autism spectrum disorder brain development functional connectivity inhibitory control resting-state fMRI Index. décimale : PER Périodiques Résumé : Development of inhibitory control is a core component of executive function processes and a key aspect of healthy development. Children with autism spectrum disorder (ASD) show impairments in performance on inhibitory control tasks. Nevertheless, the research on the neural correlates of these impairments is inconclusive. Here, we explore the integrity of inhibitory control networks in children with ASD and typically developing (TD) children using resting state functional Magnetic Resonance Imagaing (MRI). In a large multisite sample, we find evidence for significantly greater functional connectivity (FC) of the right inferior frontal junction (rIFJ) with the posterior cingulate gyrus, and left and right frontal poles in children with ASD compared with TD children. Additionally, TD children show greater FC of rIFJ with the superior parietal lobule (SPL) compared with children with ASD. Furthermore, although higher rIFJ-SPL and rIFJ-IPL FC was related to better inhibitory control behaviors in both ASD and TD children, rIFJ-dACC FC was only associated with inhibitory control behaviors in TD children. These results provide preliminary evidence of differences in intrinsic functional networks supporting inhibitory control in children with ASD, and provide a basis for further exploration of the development of inhibitory control in children with the disorder. Autism Research 2018, 11: 1468-1478. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: Inhibitory control is an important process in healthy cognitive development. Behavioral studies suggest that inhibitory control is impaired in autism spectrum disorder (ASD). However, research examining the neural correlates underlying inhibitory control differences in children with ASD is inconclusive. This study reveals differences in functional connectivity of brain networks important for inhibitory control in children with ASD compared with typically developing children. Furthermore, it relates brain network differences to parent-reported inhibitory control behaviors in children with ASD. These findings provide support for the hypothesis that differences in brain connectivity may underlie observable behavioral deficits in inhibitory control in children with the disorder. En ligne : http://dx.doi.org/10.1002/aur.2014 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=370
in Autism Research > 11-11 (November 2018) . - p.1468-1478[article] Aberrant functional connectivity of inhibitory control networks in children with autism spectrum disorder [Texte imprimé et/ou numérique] / W. VOORHIES, Auteur ; Dina R. DAJANI, Auteur ; S. G. VIJ, Auteur ; S. SHANKAR, Auteur ; T. O. TURAN, Auteur ; L. Q. UDDIN, Auteur . - p.1468-1478.
Langues : Anglais (eng)
in Autism Research > 11-11 (November 2018) . - p.1468-1478
Mots-clés : autism spectrum disorder brain development functional connectivity inhibitory control resting-state fMRI Index. décimale : PER Périodiques Résumé : Development of inhibitory control is a core component of executive function processes and a key aspect of healthy development. Children with autism spectrum disorder (ASD) show impairments in performance on inhibitory control tasks. Nevertheless, the research on the neural correlates of these impairments is inconclusive. Here, we explore the integrity of inhibitory control networks in children with ASD and typically developing (TD) children using resting state functional Magnetic Resonance Imagaing (MRI). In a large multisite sample, we find evidence for significantly greater functional connectivity (FC) of the right inferior frontal junction (rIFJ) with the posterior cingulate gyrus, and left and right frontal poles in children with ASD compared with TD children. Additionally, TD children show greater FC of rIFJ with the superior parietal lobule (SPL) compared with children with ASD. Furthermore, although higher rIFJ-SPL and rIFJ-IPL FC was related to better inhibitory control behaviors in both ASD and TD children, rIFJ-dACC FC was only associated with inhibitory control behaviors in TD children. These results provide preliminary evidence of differences in intrinsic functional networks supporting inhibitory control in children with ASD, and provide a basis for further exploration of the development of inhibitory control in children with the disorder. Autism Research 2018, 11: 1468-1478. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: Inhibitory control is an important process in healthy cognitive development. Behavioral studies suggest that inhibitory control is impaired in autism spectrum disorder (ASD). However, research examining the neural correlates underlying inhibitory control differences in children with ASD is inconclusive. This study reveals differences in functional connectivity of brain networks important for inhibitory control in children with ASD compared with typically developing children. Furthermore, it relates brain network differences to parent-reported inhibitory control behaviors in children with ASD. These findings provide support for the hypothesis that differences in brain connectivity may underlie observable behavioral deficits in inhibitory control in children with the disorder. En ligne : http://dx.doi.org/10.1002/aur.2014 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=370 Aberrant local striatal functional connectivity in attention-deficit/hyperactivity disorder / Daniel VON RHEIN in Journal of Child Psychology and Psychiatry, 57-6 (June 2016)
[article]
Titre : Aberrant local striatal functional connectivity in attention-deficit/hyperactivity disorder Type de document : Texte imprimé et/ou numérique Auteurs : Daniel VON RHEIN, Auteur ; Marianne OLDEHINKEL, Auteur ; Christian F. BECKMANN, Auteur ; Jaap OOSTERLAAN, Auteur ; Dirk J. HESLENFELD, Auteur ; Catharina A. HARTMAN, Auteur ; Pieter J. HOEKSTRA, Auteur ; Barbara FRANKE, Auteur ; Roshan COOLS, Auteur ; Jan K. BUITELAAR, Auteur ; Maarten MENNES, Auteur Article en page(s) : p.697-705 Langues : Anglais (eng) Mots-clés : Resting-state fMRI functional connectivity attention-deficit/hyperactivity disorder cortico-striatal networks striatum putamen Index. décimale : PER Périodiques Résumé : Background Task-based and resting-state functional Magnetic Resonance Imaging (fMRI) studies report attention-deficit/hyperactivity disorder (ADHD)-related alterations in brain regions implicated in cortico-striatal networks. We assessed whether ADHD is associated with changes in the brain's global cortico-striatal functional architecture, or whether ADHD-related alterations are limited to local, intrastriatal functional connections. Methods We included a cohort of adolescents with ADHD (N = 181) and healthy controls (N = 140) and assessed functional connectivity of nucleus accumbens, caudate nucleus, anterior putamen, and posterior putamen. To assess global cortico-striatal functional architecture we computed whole-brain functional connectivity by including all regions of interest in one multivariate analysis. We assessed local striatal functional connectivity using partial correlations between the time series of the striatal regions. Results Diagnostic status did not influence global cortico-striatal functional architecture. However, compared to controls, participants with ADHD exhibited significantly increased local functional connectivity between anterior and posterior putamen (p = .0003; ADHD: z = .30, controls: z = .24). Results were not affected by medication use or comorbid oppositional defiant disorder and conduct disorder. Conclusions Our results do not support hypotheses that ADHD is associated with alterations in cortico-striatal networks, but suggest changes in local striatal functional connectivity. We interpret our findings as aberrant development of local functional connectivity of the putamen, potentially leading to decreased functional segregation between anterior and posterior putamen in ADHD. En ligne : http://dx.doi.org/10.1111/jcpp.12529 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=289
in Journal of Child Psychology and Psychiatry > 57-6 (June 2016) . - p.697-705[article] Aberrant local striatal functional connectivity in attention-deficit/hyperactivity disorder [Texte imprimé et/ou numérique] / Daniel VON RHEIN, Auteur ; Marianne OLDEHINKEL, Auteur ; Christian F. BECKMANN, Auteur ; Jaap OOSTERLAAN, Auteur ; Dirk J. HESLENFELD, Auteur ; Catharina A. HARTMAN, Auteur ; Pieter J. HOEKSTRA, Auteur ; Barbara FRANKE, Auteur ; Roshan COOLS, Auteur ; Jan K. BUITELAAR, Auteur ; Maarten MENNES, Auteur . - p.697-705.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 57-6 (June 2016) . - p.697-705
Mots-clés : Resting-state fMRI functional connectivity attention-deficit/hyperactivity disorder cortico-striatal networks striatum putamen Index. décimale : PER Périodiques Résumé : Background Task-based and resting-state functional Magnetic Resonance Imaging (fMRI) studies report attention-deficit/hyperactivity disorder (ADHD)-related alterations in brain regions implicated in cortico-striatal networks. We assessed whether ADHD is associated with changes in the brain's global cortico-striatal functional architecture, or whether ADHD-related alterations are limited to local, intrastriatal functional connections. Methods We included a cohort of adolescents with ADHD (N = 181) and healthy controls (N = 140) and assessed functional connectivity of nucleus accumbens, caudate nucleus, anterior putamen, and posterior putamen. To assess global cortico-striatal functional architecture we computed whole-brain functional connectivity by including all regions of interest in one multivariate analysis. We assessed local striatal functional connectivity using partial correlations between the time series of the striatal regions. Results Diagnostic status did not influence global cortico-striatal functional architecture. However, compared to controls, participants with ADHD exhibited significantly increased local functional connectivity between anterior and posterior putamen (p = .0003; ADHD: z = .30, controls: z = .24). Results were not affected by medication use or comorbid oppositional defiant disorder and conduct disorder. Conclusions Our results do not support hypotheses that ADHD is associated with alterations in cortico-striatal networks, but suggest changes in local striatal functional connectivity. We interpret our findings as aberrant development of local functional connectivity of the putamen, potentially leading to decreased functional segregation between anterior and posterior putamen in ADHD. En ligne : http://dx.doi.org/10.1111/jcpp.12529 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=289 Aberrant structural and functional connectivity and neurodevelopmental impairment in preterm children / C. E. ROGERS in Journal of Neurodevelopmental Disorders, 10-1 (December 2018)
[article]
Titre : Aberrant structural and functional connectivity and neurodevelopmental impairment in preterm children Type de document : Texte imprimé et/ou numérique Auteurs : C. E. ROGERS, Auteur ; R. E. LEAN, Auteur ; M. D. WHEELOCK, Auteur ; C. D. SMYSER, Auteur Année de publication : 2018 Article en page(s) : 38 p. Langues : Anglais (eng) Mots-clés : Functional connectivity Magnetic resonance imaging Neurodevelopmental disorders Prematurity Structural connectivity Index. décimale : PER Périodiques Résumé : BACKGROUND: Despite advances in antenatal and neonatal care, preterm birth remains a leading cause of neurological disabilities in children. Infants born prematurely, particularly those delivered at the earliest gestational ages, commonly demonstrate increased rates of impairment across multiple neurodevelopmental domains. Indeed, the current literature establishes that preterm birth is a leading risk factor for cerebral palsy, is associated with executive function deficits, increases risk for impaired receptive and expressive language skills, and is linked with higher rates of co-occurring attention deficit hyperactivity disorder, anxiety, and autism spectrum disorders. These same infants also demonstrate elevated rates of aberrant cerebral structural and functional connectivity, with persistent changes evident across advanced magnetic resonance imaging modalities as early as the neonatal period. Emerging findings from cross-sectional and longitudinal investigations increasingly suggest that aberrant connectivity within key functional networks and white matter tracts may underlie the neurodevelopmental impairments common in this population. MAIN BODY: This review begins by highlighting the elevated rates of neurodevelopmental disorders across domains in this clinical population, describes the patterns of aberrant structural and functional connectivity common in prematurely-born infants and children, and then reviews the increasingly established body of literature delineating the relationship between these brain abnormalities and adverse neurodevelopmental outcomes. We also detail important, typically understudied, clinical, and social variables that may influence these relationships among preterm children, including heritability and psychosocial risks. CONCLUSION: Future work in this domain should continue to leverage longitudinal evaluations of preterm infants which include both neuroimaging and detailed serial neurodevelopmental assessments to further characterize relationships between imaging measures and impairment, information necessary for advancing our understanding of modifiable risk factors underlying these disorders and best practices for improving neurodevelopmental trajectories in this high-risk clinical population. En ligne : http://dx.doi.org/10.1186/s11689-018-9253-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=386
in Journal of Neurodevelopmental Disorders > 10-1 (December 2018) . - 38 p.[article] Aberrant structural and functional connectivity and neurodevelopmental impairment in preterm children [Texte imprimé et/ou numérique] / C. E. ROGERS, Auteur ; R. E. LEAN, Auteur ; M. D. WHEELOCK, Auteur ; C. D. SMYSER, Auteur . - 2018 . - 38 p.
Langues : Anglais (eng)
in Journal of Neurodevelopmental Disorders > 10-1 (December 2018) . - 38 p.
Mots-clés : Functional connectivity Magnetic resonance imaging Neurodevelopmental disorders Prematurity Structural connectivity Index. décimale : PER Périodiques Résumé : BACKGROUND: Despite advances in antenatal and neonatal care, preterm birth remains a leading cause of neurological disabilities in children. Infants born prematurely, particularly those delivered at the earliest gestational ages, commonly demonstrate increased rates of impairment across multiple neurodevelopmental domains. Indeed, the current literature establishes that preterm birth is a leading risk factor for cerebral palsy, is associated with executive function deficits, increases risk for impaired receptive and expressive language skills, and is linked with higher rates of co-occurring attention deficit hyperactivity disorder, anxiety, and autism spectrum disorders. These same infants also demonstrate elevated rates of aberrant cerebral structural and functional connectivity, with persistent changes evident across advanced magnetic resonance imaging modalities as early as the neonatal period. Emerging findings from cross-sectional and longitudinal investigations increasingly suggest that aberrant connectivity within key functional networks and white matter tracts may underlie the neurodevelopmental impairments common in this population. MAIN BODY: This review begins by highlighting the elevated rates of neurodevelopmental disorders across domains in this clinical population, describes the patterns of aberrant structural and functional connectivity common in prematurely-born infants and children, and then reviews the increasingly established body of literature delineating the relationship between these brain abnormalities and adverse neurodevelopmental outcomes. We also detail important, typically understudied, clinical, and social variables that may influence these relationships among preterm children, including heritability and psychosocial risks. CONCLUSION: Future work in this domain should continue to leverage longitudinal evaluations of preterm infants which include both neuroimaging and detailed serial neurodevelopmental assessments to further characterize relationships between imaging measures and impairment, information necessary for advancing our understanding of modifiable risk factors underlying these disorders and best practices for improving neurodevelopmental trajectories in this high-risk clinical population. En ligne : http://dx.doi.org/10.1186/s11689-018-9253-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=386 Abnormal gray matter volume and functional connectivity patterns in social cognition-related brain regions of young children with autism spectrum disorder / Chen BAI in Autism Research, 16-6 (June 2023)
PermalinkADHD-related sex differences in fronto-subcortical intrinsic functional connectivity and associations with delay discounting / K. S. ROSCH in Journal of Neurodevelopmental Disorders, 10-1 (December 2018)
PermalinkAtypical longitudinal development of functional connectivity in adolescents with autism spectrum disorder / K. E. LAWRENCE in Autism Research, 12-1 (January 2019)
PermalinkAtypical Visuospatial Processing in Autism: Insights from Functional Connectivity Analysis / Jane MCGRATH in Autism Research, 5-5 (October 2012)
PermalinkBrief Report: Anomalous Neural Deactivations and Functional Connectivity During Receptive Language in Autism Spectrum Disorder: A Functional MRI Study / Ariel KARTEN in Journal of Autism and Developmental Disorders, 45-6 (June 2015)
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