Exploring the heterogeneity of neural social indices for genetically distinct etiologies of autism / Caitlin M. HUDAC in Journal of Neurodevelopmental Disorders, 9-1 (December 2017)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 9-1 (December 2017) . - p.24 Titre : Exploring the heterogeneity of neural social indices for genetically distinct etiologies of autism Type de document : texte imprimé Auteurs : Caitlin M. HUDAC, Auteur ; Holly A.F. STESSMAN, Auteur ; Trent D. DESCHAMPS, Auteur ; Anna KRESSE, Auteur ; Susan FAJA, Auteur ; Emily NEUHAUS, Auteur ; Sara J. WEBB, Auteur ; Evan E. EICHLER, Auteur ; Raphael A. BERNIER, Auteur Article en page(s) : p.24 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders (ASD)  Electroencephalography (EEG)  Likely gene-disrupting mutations  Molecular subtyping  Mu rhythm attenuation  Social cognition  Social perception Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism spectrum disorder (ASD) is a genetically and phenotypically heterogeneous disorder. Promising initiatives utilizing interdisciplinary characterization of ASD suggest phenotypic subtypes related to specific likely gene-disrupting mutations (LGDMs). However, the role of functionally associated LGDMs in the neural social phenotype is unknown. METHODS: In this study of 26 children with ASD (n = 13 with an LGDM) and 13 control children, we characterized patterns of mu attenuation and habituation as children watched videos containing social and nonsocial motions during electroencephalography acquisition. RESULTS: Diagnostic comparisons were consistent with prior work suggesting aberrant mu attenuation in ASD within the upper mu band (10-12 Hz), but typical patterns within the lower mu band (8-10 Hz). Preliminary exploration indicated distinct social sensitization patterns (i.e., increasing mu attenuation for social motion) for children with an LGDM that is primarily expressed during embryonic development. In contrast, children with an LGDM primarily expressed post-embryonic development exhibited stable typical patterns of lower mu attenuation. Neural social indices were associated with social responsiveness, but not cognition. CONCLUSIONS: These findings suggest unique neurophysiological profiles for certain genetic etiologies of ASD, further clarifying possible genetic functional subtypes of ASD and providing insight into mechanisms for targeted treatment approaches. En ligne : http://dx.doi.org/10.1186/s11689-017-9199-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=350 [article] Exploring the heterogeneity of neural social indices for genetically distinct etiologies of autism [texte imprimé] / Caitlin M. HUDAC, Auteur ; Holly A.F. STESSMAN, Auteur ; Trent D. DESCHAMPS, Auteur ; Anna KRESSE, Auteur ; Susan FAJA, Auteur ; Emily NEUHAUS, Auteur ; Sara J. WEBB, Auteur ; Evan E. EICHLER, Auteur ; Raphael A. BERNIER, Auteur . - p.24. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 9-1 (December 2017) . - p.24 Mots-clés : Autism spectrum disorders (ASD)  Electroencephalography (EEG)  Likely gene-disrupting mutations  Molecular subtyping  Mu rhythm attenuation  Social cognition  Social perception Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism spectrum disorder (ASD) is a genetically and phenotypically heterogeneous disorder. Promising initiatives utilizing interdisciplinary characterization of ASD suggest phenotypic subtypes related to specific likely gene-disrupting mutations (LGDMs). However, the role of functionally associated LGDMs in the neural social phenotype is unknown. METHODS: In this study of 26 children with ASD (n = 13 with an LGDM) and 13 control children, we characterized patterns of mu attenuation and habituation as children watched videos containing social and nonsocial motions during electroencephalography acquisition. RESULTS: Diagnostic comparisons were consistent with prior work suggesting aberrant mu attenuation in ASD within the upper mu band (10-12 Hz), but typical patterns within the lower mu band (8-10 Hz). Preliminary exploration indicated distinct social sensitization patterns (i.e., increasing mu attenuation for social motion) for children with an LGDM that is primarily expressed during embryonic development. In contrast, children with an LGDM primarily expressed post-embryonic development exhibited stable typical patterns of lower mu attenuation. Neural social indices were associated with social responsiveness, but not cognition. CONCLUSIONS: These findings suggest unique neurophysiological profiles for certain genetic etiologies of ASD, further clarifying possible genetic functional subtypes of ASD and providing insight into mechanisms for targeted treatment approaches. En ligne : http://dx.doi.org/10.1186/s11689-017-9199-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=350

Frontal EEG alpha asymmetry in youth with autism: Sex differences and social-emotional correlates / Megha SANTHOSH ; Anna KRESSE ; Elizabeth H. AYLWARD ; Raphael A. BERNIER ; Susan Y. BOOKHEIMER ; Shafali S. JESTE ; Allison JACK ; James C. MCPARTLAND ; Adam J. NAPLES ; John D. VAN HORN ; Kevin A. PELPHREY ; Sara Jane WEBB ; ACE GENDAAR NETWORK in Autism Research, 16-12 (December 2023)  

Public ISBD [article]  inAutism Research > 16-12 (December 2023) . - p.2364-2377 Titre : Frontal EEG alpha asymmetry in youth with autism: Sex differences and social-emotional correlates Type de document : texte imprimé Auteurs : Megha SANTHOSH, Auteur ; Anna KRESSE, Auteur ; Elizabeth H. AYLWARD, Auteur ; Raphael A. BERNIER, Auteur ; Susan Y. BOOKHEIMER, Auteur ; Shafali S. JESTE, Auteur ; Allison JACK, Auteur ; James C. MCPARTLAND, Auteur ; Adam J. NAPLES, Auteur ; John D. VAN HORN, Auteur ; Kevin A. PELPHREY, Auteur ; Sara Jane WEBB, Auteur ; ACE GENDAAR NETWORK, Auteur Article en page(s) : p.2364-2377 Index. décimale : PER Périodiques Résumé : Abstract In youth broadly, EEG frontal alpha asymmetry (FAA) associates with affective style and vulnerability to psychopathology, with relatively stronger right activity predicting risk for internalizing and externalizing behaviors. In autistic youth, FAA has been related to ASD diagnostic features and to internalizing symptoms. Among our large, rigorously characterized, sex-balanced participant group, we attempted to replicate findings suggestive of altered FAA in youth with an ASD diagnosis, examining group differences and impact of sex assigned at birth. Second, we examined relations between FAA and behavioral variables (ASD features, internalizing, and externalizing) within autistic youth, examining effects by sex. Third, we explored whether the relation between FAA, autism features, and mental health was informed by maternal depression history. In our sample, FAA did not differ by diagnosis, age, or sex. However, youth with ASD had lower total frontal alpha power than youth without ASD. For autistic females, FAA and bilateral frontal alpha power correlated with social communication features, but not with internalizing or externalizing symptoms. For autistic males, EEG markers correlated with social communication features, and with externalizing behaviors. Exploratory analyses by sex revealed further associations between youth FAA, behavioral indices, and maternal depression history. In summary, findings suggest that individual differences in FAA may correspond to social-emotional and mental health behaviors, with different patterns of association for females and males with ASD. Longitudinal consideration of individual differences across levels of analysis (e.g., biomarkers, family factors, and environmental influences) will be essential to parsing out models of risk and resilience among autistic youth. En ligne : https://doi.org/10.1002/aur.3032 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=518 [article] Frontal EEG alpha asymmetry in youth with autism: Sex differences and social-emotional correlates [texte imprimé] / Megha SANTHOSH, Auteur ; Anna KRESSE, Auteur ; Elizabeth H. AYLWARD, Auteur ; Raphael A. BERNIER, Auteur ; Susan Y. BOOKHEIMER, Auteur ; Shafali S. JESTE, Auteur ; Allison JACK, Auteur ; James C. MCPARTLAND, Auteur ; Adam J. NAPLES, Auteur ; John D. VAN HORN, Auteur ; Kevin A. PELPHREY, Auteur ; Sara Jane WEBB, Auteur ; ACE GENDAAR NETWORK, Auteur . - p.2364-2377. in Autism Research > 16-12 (December 2023) . - p.2364-2377 Index. décimale : PER Périodiques Résumé : Abstract In youth broadly, EEG frontal alpha asymmetry (FAA) associates with affective style and vulnerability to psychopathology, with relatively stronger right activity predicting risk for internalizing and externalizing behaviors. In autistic youth, FAA has been related to ASD diagnostic features and to internalizing symptoms. Among our large, rigorously characterized, sex-balanced participant group, we attempted to replicate findings suggestive of altered FAA in youth with an ASD diagnosis, examining group differences and impact of sex assigned at birth. Second, we examined relations between FAA and behavioral variables (ASD features, internalizing, and externalizing) within autistic youth, examining effects by sex. Third, we explored whether the relation between FAA, autism features, and mental health was informed by maternal depression history. In our sample, FAA did not differ by diagnosis, age, or sex. However, youth with ASD had lower total frontal alpha power than youth without ASD. For autistic females, FAA and bilateral frontal alpha power correlated with social communication features, but not with internalizing or externalizing symptoms. For autistic males, EEG markers correlated with social communication features, and with externalizing behaviors. Exploratory analyses by sex revealed further associations between youth FAA, behavioral indices, and maternal depression history. In summary, findings suggest that individual differences in FAA may correspond to social-emotional and mental health behaviors, with different patterns of association for females and males with ASD. Longitudinal consideration of individual differences across levels of analysis (e.g., biomarkers, family factors, and environmental influences) will be essential to parsing out models of risk and resilience among autistic youth. En ligne : https://doi.org/10.1002/aur.3032 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=518

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

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 52-1 (January 2022) . - p.454-462 Titre : Language and Aggressive Behaviors in Male and Female Youth with Autism Spectrum Disorder Type de document : texte imprimé Auteurs : Emily NEUHAUS, Auteur ; Veronica Y. KANG, Auteur ; Anna KRESSE, Auteur ; Sarah CORRIGAN, Auteur ; Elizabeth H. AYLWARD, Auteur ; Raphael A. BERNIER, Auteur ; Susan Y. BOOKHEIMER, Auteur ; Mirella DAPRETTO, Auteur ; A. JACK, Auteur ; Shafali S. JESTE, Auteur ; James C. MCPARTLAND, Auteur ; John D. VAN HORN, Auteur ; Kevin A. PELPHREY, Auteur ; Sara J. WEBB, Auteur Article en page(s) : p.454-462 Langues : Anglais (eng) Mots-clés : Adolescent  Aggression  Autism Spectrum Disorder  Child  Communication  Female  Humans  Language  Male  Asd  Autism  Externalizing behaviors  Gender  Sex differences Index. décimale : PER Périodiques Résumé : Aggressive behaviors are common among youth with autism spectrum disorder (ASD) and correlate with pervasive social-emotional difficulties. Communication skill is an important correlate of disruptive behavior in typical development, and clarification of links between communication and aggression in ASD may inform intervention methods. We investigate child/family factors and communication in relation to aggression among 145 individuals with ASD (65 female; ages 8-17 years). Overall, more severe aggression was associated with younger age, lower family income, and difficulties with communication skills. However, this pattern of results was driven by males, and aggression was unrelated to child or family characteristics for females. Future work should incorporate these predictors in conjunction with broader contextual factors to understand aggressive behavior in females with ASD. En ligne : http://dx.doi.org/10.1007/s10803-020-04773-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=455 [article] Language and Aggressive Behaviors in Male and Female Youth with Autism Spectrum Disorder [texte imprimé] / Emily NEUHAUS, Auteur ; Veronica Y. KANG, Auteur ; Anna KRESSE, Auteur ; Sarah CORRIGAN, Auteur ; Elizabeth H. AYLWARD, Auteur ; Raphael A. BERNIER, Auteur ; Susan Y. BOOKHEIMER, Auteur ; Mirella DAPRETTO, Auteur ; A. JACK, Auteur ; Shafali S. JESTE, Auteur ; James C. MCPARTLAND, Auteur ; John D. VAN HORN, Auteur ; Kevin A. PELPHREY, Auteur ; Sara J. WEBB, Auteur . - p.454-462. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 52-1 (January 2022) . - p.454-462 Mots-clés : Adolescent  Aggression  Autism Spectrum Disorder  Child  Communication  Female  Humans  Language  Male  Asd  Autism  Externalizing behaviors  Gender  Sex differences Index. décimale : PER Périodiques Résumé : Aggressive behaviors are common among youth with autism spectrum disorder (ASD) and correlate with pervasive social-emotional difficulties. Communication skill is an important correlate of disruptive behavior in typical development, and clarification of links between communication and aggression in ASD may inform intervention methods. We investigate child/family factors and communication in relation to aggression among 145 individuals with ASD (65 female; ages 8-17 years). Overall, more severe aggression was associated with younger age, lower family income, and difficulties with communication skills. However, this pattern of results was driven by males, and aggression was unrelated to child or family characteristics for females. Future work should incorporate these predictors in conjunction with broader contextual factors to understand aggressive behavior in females with ASD. En ligne : http://dx.doi.org/10.1007/s10803-020-04773-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=455

Modulation of mu attenuation to social stimuli in children and adults with 16p11.2 deletions and duplications / Caitlin M. HUDAC in Journal of Neurodevelopmental Disorders, 7-1 (December 2015)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 7-1 (December 2015) . - p.25 Titre : Modulation of mu attenuation to social stimuli in children and adults with 16p11.2 deletions and duplications Type de document : texte imprimé Auteurs : Caitlin M. HUDAC, Auteur ; Anna KRESSE, Auteur ; Benjamin AARONSON, Auteur ; Trent D. DESCHAMPS, Auteur ; Sara J. WEBB, Auteur ; Raphael A. BERNIER, Auteur Article en page(s) : p.25 Langues : Anglais (eng) Mots-clés : 16p11.2  Autism spectrum disorder (ASD)  Copy number variation (CNV)  Electroencephalogram (EEG)  Molecular subtyping  Mu attenuation  Social perception Index. décimale : PER Périodiques Résumé : BACKGROUND: Copy number variations (CNV) within the recurrent ~600 kb chromosomal locus of 16p11.2 are associated with a wide range of neurodevelopmental disorders, including autism spectrum disorder (ASD). However, little is known about the social brain phenotype of 16p11.2 CNV and how this phenotype is related to the social impairments associated with CNVs at this locus. The aim of this preliminary study was to use molecular subtyping to establish the social brain phenotype of individuals with 16p11.2 CNV and how these patterns relate to typical development and ASD. METHODS: We evaluated the social brain phenotype as expressed by mu attenuation in 48 children and adults characterized as duplication carriers (n = 12), deletion carriers (n = 12), individuals with idiopathic ASD (n = 8), and neurotypical controls (n = 16). Participants watched videos containing social and nonsocial motion during electroencephalogram (EEG) acquisition. RESULTS: Overall, only the typical group exhibited predicted patterns of mu modulation to social information (e.g., greater mu attenuation for social than nonsocial motion). Both 16p11.2 CNV groups exhibited more mu attenuation for nonsocial than social motion. The ASD group did not discriminate between conditions and demonstrated less mu attenuation compared to the typical and duplication carriers. Single-trial analysis indicated that mu attenuation decreased over time more rapidly for 16p11.2 CNV groups than the typical group. The duplication group did not diverge from typical patterns of mu attenuation until after initial exposure. CONCLUSIONS: These results indicate atypical but unique patterns of mu attenuation for deletion and duplication carriers, highlighting the need to continue characterizing the social brain phenotype associated with 16p11.2 CNVs. En ligne : http://dx.doi.org/10.1186/s11689-015-9118-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=347 [article] Modulation of mu attenuation to social stimuli in children and adults with 16p11.2 deletions and duplications [texte imprimé] / Caitlin M. HUDAC, Auteur ; Anna KRESSE, Auteur ; Benjamin AARONSON, Auteur ; Trent D. DESCHAMPS, Auteur ; Sara J. WEBB, Auteur ; Raphael A. BERNIER, Auteur . - p.25. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 7-1 (December 2015) . - p.25 Mots-clés : 16p11.2  Autism spectrum disorder (ASD)  Copy number variation (CNV)  Electroencephalogram (EEG)  Molecular subtyping  Mu attenuation  Social perception Index. décimale : PER Périodiques Résumé : BACKGROUND: Copy number variations (CNV) within the recurrent ~600 kb chromosomal locus of 16p11.2 are associated with a wide range of neurodevelopmental disorders, including autism spectrum disorder (ASD). However, little is known about the social brain phenotype of 16p11.2 CNV and how this phenotype is related to the social impairments associated with CNVs at this locus. The aim of this preliminary study was to use molecular subtyping to establish the social brain phenotype of individuals with 16p11.2 CNV and how these patterns relate to typical development and ASD. METHODS: We evaluated the social brain phenotype as expressed by mu attenuation in 48 children and adults characterized as duplication carriers (n = 12), deletion carriers (n = 12), individuals with idiopathic ASD (n = 8), and neurotypical controls (n = 16). Participants watched videos containing social and nonsocial motion during electroencephalogram (EEG) acquisition. RESULTS: Overall, only the typical group exhibited predicted patterns of mu modulation to social information (e.g., greater mu attenuation for social than nonsocial motion). Both 16p11.2 CNV groups exhibited more mu attenuation for nonsocial than social motion. The ASD group did not discriminate between conditions and demonstrated less mu attenuation compared to the typical and duplication carriers. Single-trial analysis indicated that mu attenuation decreased over time more rapidly for 16p11.2 CNV groups than the typical group. The duplication group did not diverge from typical patterns of mu attenuation until after initial exposure. CONCLUSIONS: These results indicate atypical but unique patterns of mu attenuation for deletion and duplication carriers, highlighting the need to continue characterizing the social brain phenotype associated with 16p11.2 CNVs. En ligne : http://dx.doi.org/10.1186/s11689-015-9118-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=347

Resting state EEG in youth with ASD: age, sex, and relation to phenotype / Emily NEUHAUS in Journal of Neurodevelopmental Disorders, 13 (2021)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 13 (2021) Titre : Resting state EEG in youth with ASD: age, sex, and relation to phenotype Type de document : texte imprimé Auteurs : Emily NEUHAUS, Auteur ; Sarah J. LOWRY, Auteur ; Megha SANTHOSH, Auteur ; Anna KRESSE, Auteur ; Laura A. EDWARDS, Auteur ; Jack KELLER, Auteur ; Erin J. LIBSACK, Auteur ; Veronica Y. KANG, Auteur ; Adam NAPLES, Auteur ; Allison JACK, Auteur ; Shafali JESTE, Auteur ; James C. MCPARTLAND, Auteur ; Elizabeth AYLWARD, Auteur ; Raphael BERNIER, Auteur ; Susan BOOKHEIMER, Auteur ; Mirella DAPRETTO, Auteur ; John D. VAN HORN, Auteur ; Kevin PELPHREY, Auteur ; Sara Jane WEBB, Auteur ; THE ACE GENDAAR NETWORK, Auteur Langues : Anglais (eng) Mots-clés : Adolescent  Aged  Autism Spectrum Disorder/diagnosis  Brain  Electroencephalography  Female  Humans  Male  Phenotype  Sex Characteristics  Alpha  Autism  Biomarker  Eeg  Power  Resting  Sex differences  funding from Janssen Research and Development, and receives royalties from  Guilford Press, Lambert, and Springer. The remaining authors report no  affiliations with or involvement in any organization or entity with any financial  interest in the outcome of this project. Index. décimale : PER Périodiques Résumé : BACKGROUND: Identification of ASD biomarkers is a key priority for understanding etiology, facilitating early diagnosis, monitoring developmental trajectories, and targeting treatment efforts. Efforts have included exploration of resting state encephalography (EEG), which has a variety of relevant neurodevelopmental correlates and can be collected with minimal burden. However, EEG biomarkers may not be equally valid across the autism spectrum, as ASD is strikingly heterogeneous and individual differences may moderate EEG-behavior associations. Biological sex is a particularly important potential moderator, as females with ASD appear to differ from males with ASD in important ways that may influence biomarker accuracy. METHODS: We examined effects of biological sex, age, and ASD diagnosis on resting state EEG among a large, sex-balanced sample of youth with (N = 142, 43% female) and without (N = 138, 49% female) ASD collected across four research sites. Absolute power was extracted across five frequency bands and nine brain regions, and effects of sex, age, and diagnosis were analyzed using mixed-effects linear regression models. Exploratory partial correlations were computed to examine EEG-behavior associations in ASD, with emphasis on possible sex differences in associations. RESULTS: Decreased EEG power across multiple frequencies was associated with female sex and older age. Youth with ASD displayed decreased alpha power relative to peers without ASD, suggesting increased neural activation during rest. Associations between EEG and behavior varied by sex. Whereas power across various frequencies correlated with social skills, nonverbal IQ, and repetitive behavior for males with ASD, no such associations were observed for females with ASD. CONCLUSIONS: Research using EEG as a possible ASD biomarker must consider individual differences among participants, as these features influence baseline EEG measures and moderate associations between EEG and important behavioral outcomes. Failure to consider factors such as biological sex in such research risks defining biomarkers that misrepresent females with ASD, hindering understanding of the neurobiology, development, and intervention response of this important population. En ligne : https://dx.doi.org/10.1186/s11689-021-09390-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=574 [article] Resting state EEG in youth with ASD: age, sex, and relation to phenotype [texte imprimé] / Emily NEUHAUS, Auteur ; Sarah J. LOWRY, Auteur ; Megha SANTHOSH, Auteur ; Anna KRESSE, Auteur ; Laura A. EDWARDS, Auteur ; Jack KELLER, Auteur ; Erin J. LIBSACK, Auteur ; Veronica Y. KANG, Auteur ; Adam NAPLES, Auteur ; Allison JACK, Auteur ; Shafali JESTE, Auteur ; James C. MCPARTLAND, Auteur ; Elizabeth AYLWARD, Auteur ; Raphael BERNIER, Auteur ; Susan BOOKHEIMER, Auteur ; Mirella DAPRETTO, Auteur ; John D. VAN HORN, Auteur ; Kevin PELPHREY, Auteur ; Sara Jane WEBB, Auteur ; THE ACE GENDAAR NETWORK, Auteur. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 13 (2021) Mots-clés : Adolescent  Aged  Autism Spectrum Disorder/diagnosis  Brain  Electroencephalography  Female  Humans  Male  Phenotype  Sex Characteristics  Alpha  Autism  Biomarker  Eeg  Power  Resting  Sex differences  funding from Janssen Research and Development, and receives royalties from  Guilford Press, Lambert, and Springer. The remaining authors report no  affiliations with or involvement in any organization or entity with any financial  interest in the outcome of this project. Index. décimale : PER Périodiques Résumé : BACKGROUND: Identification of ASD biomarkers is a key priority for understanding etiology, facilitating early diagnosis, monitoring developmental trajectories, and targeting treatment efforts. Efforts have included exploration of resting state encephalography (EEG), which has a variety of relevant neurodevelopmental correlates and can be collected with minimal burden. However, EEG biomarkers may not be equally valid across the autism spectrum, as ASD is strikingly heterogeneous and individual differences may moderate EEG-behavior associations. Biological sex is a particularly important potential moderator, as females with ASD appear to differ from males with ASD in important ways that may influence biomarker accuracy. METHODS: We examined effects of biological sex, age, and ASD diagnosis on resting state EEG among a large, sex-balanced sample of youth with (N = 142, 43% female) and without (N = 138, 49% female) ASD collected across four research sites. Absolute power was extracted across five frequency bands and nine brain regions, and effects of sex, age, and diagnosis were analyzed using mixed-effects linear regression models. Exploratory partial correlations were computed to examine EEG-behavior associations in ASD, with emphasis on possible sex differences in associations. RESULTS: Decreased EEG power across multiple frequencies was associated with female sex and older age. Youth with ASD displayed decreased alpha power relative to peers without ASD, suggesting increased neural activation during rest. Associations between EEG and behavior varied by sex. Whereas power across various frequencies correlated with social skills, nonverbal IQ, and repetitive behavior for males with ASD, no such associations were observed for females with ASD. CONCLUSIONS: Research using EEG as a possible ASD biomarker must consider individual differences among participants, as these features influence baseline EEG measures and moderate associations between EEG and important behavioral outcomes. Failure to consider factors such as biological sex in such research risks defining biomarkers that misrepresent females with ASD, hindering understanding of the neurobiology, development, and intervention response of this important population. En ligne : https://dx.doi.org/10.1186/s11689-021-09390-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=574

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