Altered Neural Connectivity in Females, But Not Males with Autism: Preliminary Evidence for the Female Protective Effect from a Quality-Controlled Diffusion Tensor Imaging Study / J. LEI in Autism Research, 12-10 (October 2019)  

Public ISBD [article]  inAutism Research > 12-10 (October 2019) . - p.1472-1483 Titre : Altered Neural Connectivity in Females, But Not Males with Autism: Preliminary Evidence for the Female Protective Effect from a Quality-Controlled Diffusion Tensor Imaging Study Type de document : Texte imprimé et/ou numérique Auteurs : J. LEI, Auteur ; E. LECARIE, Auteur ; J. JURAYJ, Auteur ; S. BOLAND, Auteur ; D. G. SUKHODOLSKY, Auteur ; Pamela VENTOLA, Auteur ; Kevin A. PELPHREY, Auteur ; R. J. JOU, Auteur Article en page(s) : p.1472-1483 Langues : Anglais (eng) Mots-clés : anisotropy  autism spectrum disorder  diffusion tensor imaging  female  motion  sex characteristics Index. décimale : PER Périodiques Résumé : Previous studies using diffusion tensor imaging (DTI) to investigate white matter (WM) structural connectivity have suggested widespread, although inconsistent WM alterations in autism spectrum disorder (ASD), such as greater reductions in fractional anisotropy (FA). However, findings may lack generalizability because: (a) most have focused solely on the ASD male brain phenotype, and not sex-differences in WM integrity; (b) many lack stringent and transparent data quality control such as controlling for head motion in analysis. This study addressed both issues by using Tract-Based Spatial Statistics (TBSS) to separately compare WM differences in 81 ASD (56 male, 25 female; 4-21 years old) and 39 typically developing (TD; 23 males, 16 females; 5-18 years old) children and young people, carefully group-matched on sex, age, cognitive abilities, and head motion. ASD males and females were also matched on autism symptom severity. Two independent-raters completed a multistep scan quality assurance to remove images that were significantly distorted by motion artifacts before analysis. ASD females exhibited significant widespread reductions in FA compared to TD females, suggesting altered WM integrity. In contrast, no significant localized or widespread WM differences were found between ASD and TD males. This study highlights the importance of data quality control in DTI, and outlines important sex-differences in WM alterations in ASD females. Future studies can explore the extent to which neural structural differences might underlie sex-differences in ASD behavioral phenotype, and guide clinical interventions to be tailored toward the unique needs of ASD females and males. Autism Res 2019, 12: 1472-1483. (c) 2019 The Authors. Autism Research published by International Society for Autism Research published by Wiley Periodicals, Inc. LAY SUMMARY: Previous Diffusion Tensor Imaging (DTI) studies have found atypical brain structural connectivity in males with autism, although findings are inconclusive in females with autism. To investigate potential sex-differences, we studied males and females with and without autism who showed a similar level of head movement during their brain scan. We found that females with autism had widespread atypical neural connectivity than females without autism, although not in males, highlighting sex-differences. En ligne : http://dx.doi.org/10.1002/aur.2180 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=408 [article] Altered Neural Connectivity in Females, But Not Males with Autism: Preliminary Evidence for the Female Protective Effect from a Quality-Controlled Diffusion Tensor Imaging Study [Texte imprimé et/ou numérique] / J. LEI, Auteur ; E. LECARIE, Auteur ; J. JURAYJ, Auteur ; S. BOLAND, Auteur ; D. G. SUKHODOLSKY, Auteur ; Pamela VENTOLA, Auteur ; Kevin A. PELPHREY, Auteur ; R. J. JOU, Auteur . - p.1472-1483. Langues : Anglais (eng) in Autism Research > 12-10 (October 2019) . - p.1472-1483 Mots-clés : anisotropy  autism spectrum disorder  diffusion tensor imaging  female  motion  sex characteristics Index. décimale : PER Périodiques Résumé : Previous studies using diffusion tensor imaging (DTI) to investigate white matter (WM) structural connectivity have suggested widespread, although inconsistent WM alterations in autism spectrum disorder (ASD), such as greater reductions in fractional anisotropy (FA). However, findings may lack generalizability because: (a) most have focused solely on the ASD male brain phenotype, and not sex-differences in WM integrity; (b) many lack stringent and transparent data quality control such as controlling for head motion in analysis. This study addressed both issues by using Tract-Based Spatial Statistics (TBSS) to separately compare WM differences in 81 ASD (56 male, 25 female; 4-21 years old) and 39 typically developing (TD; 23 males, 16 females; 5-18 years old) children and young people, carefully group-matched on sex, age, cognitive abilities, and head motion. ASD males and females were also matched on autism symptom severity. Two independent-raters completed a multistep scan quality assurance to remove images that were significantly distorted by motion artifacts before analysis. ASD females exhibited significant widespread reductions in FA compared to TD females, suggesting altered WM integrity. In contrast, no significant localized or widespread WM differences were found between ASD and TD males. This study highlights the importance of data quality control in DTI, and outlines important sex-differences in WM alterations in ASD females. Future studies can explore the extent to which neural structural differences might underlie sex-differences in ASD behavioral phenotype, and guide clinical interventions to be tailored toward the unique needs of ASD females and males. Autism Res 2019, 12: 1472-1483. (c) 2019 The Authors. Autism Research published by International Society for Autism Research published by Wiley Periodicals, Inc. LAY SUMMARY: Previous Diffusion Tensor Imaging (DTI) studies have found atypical brain structural connectivity in males with autism, although findings are inconclusive in females with autism. To investigate potential sex-differences, we studied males and females with and without autism who showed a similar level of head movement during their brain scan. We found that females with autism had widespread atypical neural connectivity than females without autism, although not in males, highlighting sex-differences. En ligne : http://dx.doi.org/10.1002/aur.2180 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=408

Annual Research Review: Understudied populations within the autism spectrum – current trends and future directions in neuroimaging research / Allison JACK in Journal of Child Psychology and Psychiatry, 58-4 (April 2017)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 58-4 (April 2017) . - p.411-435 Titre : Annual Research Review: Understudied populations within the autism spectrum – current trends and future directions in neuroimaging research Type de document : Texte imprimé et/ou numérique Auteurs : Allison JACK, Auteur ; Kevin A. PELPHREY, Auteur Article en page(s) : p.411-435 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders  intellectual disability  neuroimaging Index. décimale : PER Périodiques Résumé : Background Autism spectrum disorders (ASDs) are a heterogeneous group of neurodevelopmental conditions that vary in both etiology and phenotypic expression. Expressions of ASD characterized by a more severe phenotype, including autism with intellectual disability (ASD + ID), autism with a history of developmental regression (ASD + R), and minimally verbal autism (ASD + MV) are understudied generally, and especially in the domain of neuroimaging. However, neuroimaging methods are a potentially powerful tool for understanding the etiology of these ASD subtypes. Scope and methodology This review evaluates existing neuroimaging research on ASD + MV, ASD + ID, and ASD + R, identified by a search of the literature using the PubMed database, and discusses methodological, theoretical, and practical considerations for future research involving neuroimaging assessment of these populations. Findings There is a paucity of neuroimaging research on ASD + ID, ASD + MV, and ASD + R, and what findings do exist are often contradictory, or so sparse as to be ungeneralizable. We suggest that while greater sample sizes and more studies are necessary, more important would be a paradigm shift toward multimodal (e.g. imaging genetics) approaches that allow for the characterization of heterogeneity within etiologically diverse samples. En ligne : http://dx.doi.org/10.1111/jcpp.12687 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=305 [article] Annual Research Review: Understudied populations within the autism spectrum – current trends and future directions in neuroimaging research [Texte imprimé et/ou numérique] / Allison JACK, Auteur ; Kevin A. PELPHREY, Auteur . - p.411-435. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 58-4 (April 2017) . - p.411-435 Mots-clés : Autism spectrum disorders  intellectual disability  neuroimaging Index. décimale : PER Périodiques Résumé : Background Autism spectrum disorders (ASDs) are a heterogeneous group of neurodevelopmental conditions that vary in both etiology and phenotypic expression. Expressions of ASD characterized by a more severe phenotype, including autism with intellectual disability (ASD + ID), autism with a history of developmental regression (ASD + R), and minimally verbal autism (ASD + MV) are understudied generally, and especially in the domain of neuroimaging. However, neuroimaging methods are a potentially powerful tool for understanding the etiology of these ASD subtypes. Scope and methodology This review evaluates existing neuroimaging research on ASD + MV, ASD + ID, and ASD + R, identified by a search of the literature using the PubMed database, and discusses methodological, theoretical, and practical considerations for future research involving neuroimaging assessment of these populations. Findings There is a paucity of neuroimaging research on ASD + ID, ASD + MV, and ASD + R, and what findings do exist are often contradictory, or so sparse as to be ungeneralizable. We suggest that while greater sample sizes and more studies are necessary, more important would be a paradigm shift toward multimodal (e.g. imaging genetics) approaches that allow for the characterization of heterogeneity within etiologically diverse samples. En ligne : http://dx.doi.org/10.1111/jcpp.12687 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=305

Brain Mechanisms for Processing Direct and Averted Gaze in Individuals with Autism / Naomi PITSKEL in Journal of Autism and Developmental Disorders, 41-12 (December 2011)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 41-12 (December 2011) . - p.1686-1693 Titre : Brain Mechanisms for Processing Direct and Averted Gaze in Individuals with Autism Type de document : Texte imprimé et/ou numérique Auteurs : Naomi PITSKEL, Auteur ; Danielle Z. BOLLING, Auteur ; Caitlin M. HUDAC, Auteur ; Stephen LANTZ, Auteur ; Nancy J. MINSHEW, Auteur ; Brent C. VANDER WYK, Auteur ; Kevin A. PELPHREY, Auteur Année de publication : 2011 Article en page(s) : p.1686-1693 Langues : Anglais (eng) Mots-clés : Autism  Direct gaze  Averted gaze  Gaze processing  Functional magnetic resonance imaging Index. décimale : PER Périodiques Résumé : Prior studies have indicated brain abnormalities underlying social processing in autism, but no fMRI study has specifically addressed the differential processing of direct and averted gaze, a critical social cue. Fifteen adolescents and adults with autism and 14 typically developing comparison participants viewed dynamic virtual-reality videos depicting a simple but realistic social scenario, in which an approaching male figure maintained either direct or averted gaze. Significant group by condition interactions reflecting differential responses to direct versus averted gaze in people with autism relative to typically developing individuals were identified in the right temporoparietal junction, right anterior insula, left lateral occipital cortex, and left dorsolateral prefrontal cortex. Our results provide initial evidence regarding brain mechanisms underlying the processing of gaze direction during simple social encounters, providing new insight into the social deficits in individuals with autism. En ligne : http://dx.doi.org/10.1007/s10803-011-1197-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=148 [article] Brain Mechanisms for Processing Direct and Averted Gaze in Individuals with Autism [Texte imprimé et/ou numérique] / Naomi PITSKEL, Auteur ; Danielle Z. BOLLING, Auteur ; Caitlin M. HUDAC, Auteur ; Stephen LANTZ, Auteur ; Nancy J. MINSHEW, Auteur ; Brent C. VANDER WYK, Auteur ; Kevin A. PELPHREY, Auteur . - 2011 . - p.1686-1693. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 41-12 (December 2011) . - p.1686-1693 Mots-clés : Autism  Direct gaze  Averted gaze  Gaze processing  Functional magnetic resonance imaging Index. décimale : PER Périodiques Résumé : Prior studies have indicated brain abnormalities underlying social processing in autism, but no fMRI study has specifically addressed the differential processing of direct and averted gaze, a critical social cue. Fifteen adolescents and adults with autism and 14 typically developing comparison participants viewed dynamic virtual-reality videos depicting a simple but realistic social scenario, in which an approaching male figure maintained either direct or averted gaze. Significant group by condition interactions reflecting differential responses to direct versus averted gaze in people with autism relative to typically developing individuals were identified in the right temporoparietal junction, right anterior insula, left lateral occipital cortex, and left dorsolateral prefrontal cortex. Our results provide initial evidence regarding brain mechanisms underlying the processing of gaze direction during simple social encounters, providing new insight into the social deficits in individuals with autism. En ligne : http://dx.doi.org/10.1007/s10803-011-1197-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=148

Charting the typical and atypical development of the social brain / Kevin A. PELPHREY in Development and Psychopathology, 20-4 (Fall 2008)  

Public ISBD [article]  inDevelopment and Psychopathology > 20-4 (Fall 2008) . - p.1081-1102 Titre : Charting the typical and atypical development of the social brain Type de document : Texte imprimé et/ou numérique Auteurs : Kevin A. PELPHREY, Auteur ; Elizabeth J. CARTER, Auteur Année de publication : 2008 Article en page(s) : p.1081-1102 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : We describe recent progress in our program of research that aims to use functional magnetic resonance imaging (fMRI) to identify and delineate the brain systems involved in social perception and to chart the development of those systems and their roles as mechanisms supporting the development of social cognition in children, adolescents, and adults with and without autism. This research program was initiated with the intention of further specifying the role of the posterior superior temporal sulcus (STS) region in the network of neuroanatomical structures comprising the social brain. Initially, this work focused on evaluating STS function when typically developing adults were engaged in the visual analysis of other people's actions and intentions. We concluded that that the STS region plays an important role in social perception via its involvement in representing and predicting the actions and social intentions of other people from an analysis of biological–motion cues. These studies of typically developing people provided a set of core findings and a methodological approach that informed a set of fMRI studies of social perception dysfunction in autism. The work has established that dysfunction in the STS region, as well as reduced connectivity between this region and other social brain structures including the fusiform gyrus and amygdala, play a role in the pathophysiology of social perception deficits in autism. Most recently, this research program has incorporated a developmental perspective in beginning to chart the development of the STS region in children with and without autism. En ligne : http://dx.doi.org/10.1017/s0954579408000515 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=602 [article] Charting the typical and atypical development of the social brain [Texte imprimé et/ou numérique] / Kevin A. PELPHREY, Auteur ; Elizabeth J. CARTER, Auteur . - 2008 . - p.1081-1102. Langues : Anglais (eng) in Development and Psychopathology > 20-4 (Fall 2008) . - p.1081-1102 Index. décimale : PER Périodiques Résumé : We describe recent progress in our program of research that aims to use functional magnetic resonance imaging (fMRI) to identify and delineate the brain systems involved in social perception and to chart the development of those systems and their roles as mechanisms supporting the development of social cognition in children, adolescents, and adults with and without autism. This research program was initiated with the intention of further specifying the role of the posterior superior temporal sulcus (STS) region in the network of neuroanatomical structures comprising the social brain. Initially, this work focused on evaluating STS function when typically developing adults were engaged in the visual analysis of other people's actions and intentions. We concluded that that the STS region plays an important role in social perception via its involvement in representing and predicting the actions and social intentions of other people from an analysis of biological–motion cues. These studies of typically developing people provided a set of core findings and a methodological approach that informed a set of fMRI studies of social perception dysfunction in autism. The work has established that dysfunction in the STS region, as well as reduced connectivity between this region and other social brain structures including the fusiform gyrus and amygdala, play a role in the pathophysiology of social perception deficits in autism. Most recently, this research program has incorporated a developmental perspective in beginning to chart the development of the STS region in children with and without autism. En ligne : http://dx.doi.org/10.1017/s0954579408000515 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=602

Cortical morphological markers in children with autism: a structural magnetic resonance imaging study of thickness, area, volume, and gyrification / D. Y. YANG in Molecular Autism, 7 (2016)  

Public ISBD [article]  inMolecular Autism > 7 (2016) . - 11p. Titre : Cortical morphological markers in children with autism: a structural magnetic resonance imaging study of thickness, area, volume, and gyrification Type de document : Texte imprimé et/ou numérique Auteurs : D. Y. YANG, Auteur ; D. BEAM, Auteur ; Kevin A. PELPHREY, Auteur ; Sebiha M. ABDULLAHI, Auteur ; R. J. JOU, Auteur Article en page(s) : 11p. Langues : Anglais (eng) Mots-clés : Age Factors  Cerebral Cortex/pathology  Child  Child Development Disorders, Pervasive/pathology  Child, Preschool  Gray Matter/pathology  Humans  Image Processing, Computer-Assisted  Magnetic Resonance Imaging  Male  Neuroimaging  Organ Size  White Matter/pathology  Autism spectrum disorder  Brain development  Brain structure  Neuroanatomy  Surface-based morphometry Index. décimale : PER Périodiques Résumé : BACKGROUND: Individuals with autism spectrum disorder (ASD) have been characterized by altered cerebral cortical structures; however, the field has yet to identify consistent markers and prior studies have included mostly adolescents and adults. While there are multiple cortical morphological measures, including cortical thickness, surface area, cortical volume, and cortical gyrification, few single studies have examined all these measures. The current study analyzed all of the four measures and focused on pre-adolescent children with ASD. METHODS: We employed the FreeSurfer pipeline to examine surface-based morphometry in 60 high-functioning boys with ASD (mean age = 8.35 years, range = 4-12 years) and 41 gender-, age-, and IQ-matched typically developing (TD) peers (mean age = 8.83 years), while testing for age-by-diagnosis interaction and between-group differences. RESULTS: During childhood and in specific regions, ASD participants exhibited a lack of normative age-related cortical thinning and volumetric reduction and an abnormal age-related increase in gyrification. Regarding surface area, ASD and TD exhibited statistically comparable age-related development during childhood. Across childhood, ASD relative to TD participants tended to have higher mean levels of gyrification in specific regions. Within ASD, those with higher Social Responsiveness Scale total raw scores tended to have greater age-related increase in gyrification in specific regions during childhood. CONCLUSIONS: ASD is characterized by cortical neuroanatomical abnormalities that are age-, measure-, statistical model-, and region-dependent. The current study is the first to examine the development of all four cortical measures in one of the largest pre-adolescent samples. Strikingly, Neurosynth-based quantitative reverse inference of the surviving clusters suggests that many of the regions identified above are related to social perception, language, self-referential, and action observation networks-those frequently found to be functionally altered in individuals with ASD. The comprehensive, multilevel analyses across a wide range of cortical measures help fill a knowledge gap and present a complex but rich picture of neuroanatomical developmental differences in children with ASD. En ligne : http://dx.doi.org/10.1186/s13229-016-0076-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=329 [article] Cortical morphological markers in children with autism: a structural magnetic resonance imaging study of thickness, area, volume, and gyrification [Texte imprimé et/ou numérique] / D. Y. YANG, Auteur ; D. BEAM, Auteur ; Kevin A. PELPHREY, Auteur ; Sebiha M. ABDULLAHI, Auteur ; R. J. JOU, Auteur . - 11p. Langues : Anglais (eng) in Molecular Autism > 7 (2016) . - 11p. Mots-clés : Age Factors  Cerebral Cortex/pathology  Child  Child Development Disorders, Pervasive/pathology  Child, Preschool  Gray Matter/pathology  Humans  Image Processing, Computer-Assisted  Magnetic Resonance Imaging  Male  Neuroimaging  Organ Size  White Matter/pathology  Autism spectrum disorder  Brain development  Brain structure  Neuroanatomy  Surface-based morphometry Index. décimale : PER Périodiques Résumé : BACKGROUND: Individuals with autism spectrum disorder (ASD) have been characterized by altered cerebral cortical structures; however, the field has yet to identify consistent markers and prior studies have included mostly adolescents and adults. While there are multiple cortical morphological measures, including cortical thickness, surface area, cortical volume, and cortical gyrification, few single studies have examined all these measures. The current study analyzed all of the four measures and focused on pre-adolescent children with ASD. METHODS: We employed the FreeSurfer pipeline to examine surface-based morphometry in 60 high-functioning boys with ASD (mean age = 8.35 years, range = 4-12 years) and 41 gender-, age-, and IQ-matched typically developing (TD) peers (mean age = 8.83 years), while testing for age-by-diagnosis interaction and between-group differences. RESULTS: During childhood and in specific regions, ASD participants exhibited a lack of normative age-related cortical thinning and volumetric reduction and an abnormal age-related increase in gyrification. Regarding surface area, ASD and TD exhibited statistically comparable age-related development during childhood. Across childhood, ASD relative to TD participants tended to have higher mean levels of gyrification in specific regions. Within ASD, those with higher Social Responsiveness Scale total raw scores tended to have greater age-related increase in gyrification in specific regions during childhood. CONCLUSIONS: ASD is characterized by cortical neuroanatomical abnormalities that are age-, measure-, statistical model-, and region-dependent. The current study is the first to examine the development of all four cortical measures in one of the largest pre-adolescent samples. Strikingly, Neurosynth-based quantitative reverse inference of the surviving clusters suggests that many of the regions identified above are related to social perception, language, self-referential, and action observation networks-those frequently found to be functionally altered in individuals with ASD. The comprehensive, multilevel analyses across a wide range of cortical measures help fill a knowledge gap and present a complex but rich picture of neuroanatomical developmental differences in children with ASD. En ligne : http://dx.doi.org/10.1186/s13229-016-0076-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=329

Distinct neural bases of disruptive behavior and autism symptom severity in boys with autism spectrum disorder / Y. J. YANG in Journal of Neurodevelopmental Disorders, 9-1 (December 2017)  

Permalink

Do Biological Sex and Early Developmental Milestones Predict the Age of First Concerns and Eventual Diagnosis in Autism Spectrum Disorder? / Clare HARROP in Autism Research, 14-1 (January 2021)  

Permalink

Gender, assigned sex at birth, and gender diversity: Windows into diagnostic timing disparities in autism / Goldie A. MCQUAID in Autism, 28-11 (November 2024)  

Permalink

Improvements in Social and Adaptive Functioning Following Short-Duration PRT Program: A Clinical Replication / Pamela VENTOLA in Journal of Autism and Developmental Disorders, 44-11 (November 2014)  

Permalink

Increased perceived stress is negatively associated with activities of daily living and subjective quality of life in younger, middle, and older autistic adults / Goldie A. MCQUAID in Autism Research, 15-8 (August 2022)  

Permalink

Language and Aggressive Behaviors in Male and Female Youth with Autism Spectrum Disorder / E. NEUHAUS in Journal of Autism and Developmental Disorders, 52-1 (January 2022)  

Permalink

Neural mechanisms of behavioral change in young adults with high?functioning autism receiving virtual reality social cognition training: A pilot study / Y. J. Daniel YANG in Autism Research, 11-5 (May 2018)  

Permalink

Neural Mechanisms of Improvements in Social Motivation After Pivotal Response Treatment: Two Case Studies / Avery C. VOOS in Journal of Autism and Developmental Disorders, 43-1 (January 2013)  

Permalink

Neurogenetic analysis of childhood disintegrative disorder / A. R. GUPTA in Molecular Autism, 8 (2017)  

Permalink

Parent-child concordance on the Pubertal Development Scale in typically developing and autistic youth / Ann CLAWSON in Research in Autism Spectrum Disorders, 77 (September 2020)  

Permalink

---

1 2 (1 - 15 / 25) Par page : Tout afficher