Brief Report: Exploratory Evaluation of Clinical Features Associated with Suicidal Ideation in Youth with Autism Spectrum Disorder / Elzbieta JARZABEK ; Scott L. J. JACKSON ; Adam NAPLES ; James C. MCPARTLAND in Journal of Autism and Developmental Disorders, 54-2 (February 2024)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 54-2 (February 2024) . - p.803-810 Titre : Brief Report: Exploratory Evaluation of Clinical Features Associated with Suicidal Ideation in Youth with Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Elzbieta JARZABEK, Auteur ; Scott L. J. JACKSON, Auteur ; Adam NAPLES, Auteur ; James C. MCPARTLAND, Auteur Article en page(s) : p.803-810 Index. décimale : PER Périodiques Résumé : There has been a heightened awareness of an increased risk of suicidality among individuals with autism spectrum disorder (ASD) due to high rates of suicidal ideation (SI) in this population (11?66%). The current study investigated the rate of parent-endorsed SI and associated clinical features in 48 youths with ASD (Age; M: 12.97 years, SD: 2.33). SI was endorsed in 18.75% of participants. Youth with SI exhibited significantly higher levels of affective problems, externalizing problems, feelings of humiliation and rejection, and symptoms related to perfectionism. Results indicate that co-occurring mental health problems are associated with suicidal ideation and provide relevant targets for psychotherapeutic intervention. This preliminary study in a modest sample suggests the value of further research in larger samples to replicate and generalize these findings. En ligne : https://doi.org/10.1007/s10803-022-05575-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=520 [article] Brief Report: Exploratory Evaluation of Clinical Features Associated with Suicidal Ideation in Youth with Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Elzbieta JARZABEK, Auteur ; Scott L. J. JACKSON, Auteur ; Adam NAPLES, Auteur ; James C. MCPARTLAND, Auteur . - p.803-810. in Journal of Autism and Developmental Disorders > 54-2 (February 2024) . - p.803-810 Index. décimale : PER Périodiques Résumé : There has been a heightened awareness of an increased risk of suicidality among individuals with autism spectrum disorder (ASD) due to high rates of suicidal ideation (SI) in this population (11?66%). The current study investigated the rate of parent-endorsed SI and associated clinical features in 48 youths with ASD (Age; M: 12.97 years, SD: 2.33). SI was endorsed in 18.75% of participants. Youth with SI exhibited significantly higher levels of affective problems, externalizing problems, feelings of humiliation and rejection, and symptoms related to perfectionism. Results indicate that co-occurring mental health problems are associated with suicidal ideation and provide relevant targets for psychotherapeutic intervention. This preliminary study in a modest sample suggests the value of further research in larger samples to replicate and generalize these findings. En ligne : https://doi.org/10.1007/s10803-022-05575-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=520

Exploring communicative competence in autistic children who are minimally verbal: The Low Verbal Investigatory Survey for Autism (LVIS) / Adam NAPLES in Autism, 27-5 (July 2023)  

Public ISBD [article]  inAutism > 27-5 (July 2023) . - p.1391-1406 Titre : Exploring communicative competence in autistic children who are minimally verbal: The Low Verbal Investigatory Survey for Autism (LVIS) Type de document : Texte imprimé et/ou numérique Auteurs : Adam NAPLES, Auteur ; Elena J. TENENBAUM, Auteur ; Richard N. JONES, Auteur ; Giulia RIGHI, Auteur ; Stephen J. SHEINKOPF, Auteur ; Inge-Marie EIGSTI, Auteur Article en page(s) : p.1391-1406 Langues : Anglais (eng) Mots-clés : autism spectrum disorder;assessment;communication;language;LVIS;minimally verbal Index. décimale : PER Périodiques Résumé : Approximately 30% of autistic children are considered minimally verbal. The field lacks an efficient and reliable measure of communicative capacity among minimally verbal autistic children. Improved methods are needed to determine which children are at greatest risk for minimally verbal outcomes to better target interventions. Here, we present the Low Verbal Investigatory Survey (LVIS), a brief parent-report measure designed to assess communicative capacity among minimally verbal autistic children. The 36-item easy-to-complete LVIS was developed to capture the atypical language trajectories associated specifically with autism. We report pilot results from a sample of 147 children (1-8?years) whose caregivers completed the LVIS as part of other studies. Principal components analysis was used to assess dimensionality of the LVIS; composite scores were compared with existing measures of communicative capacity, all of which take significantly more time and training to administer and score. Scores on the LVIS were strongly correlated with existing gold-standard measures of communication. Presence of atypical vocalizations was determined to be particularly relevant for symptoms of autism as well as language and cognitive abilities. These findings provide initial validation of a tool designed to capture multiple dimensions of communicative capacity in children with minimal or low verbal skills. Lay abstract Approximately one in three autistic children is unable to communicate with language; this state is often described as minimally verbal. Despite the tremendous clinical implications, we cannot predict whether a minimally verbal child is simply delayed (but will eventually develop spoken language) or will continue to struggle with verbal language, and might therefore benefit from learning an alternative form of communication. This is important for clinicians to know, to be able to choose the most helpful interventions, such as alternative forms of communication. In addition, the field lacks a standard definition of "minimally verbal." Even when we do agree on what the term means (e.g. fewer than 20 words), describing a child based on their lack of words does not tell us whether that child is communicating in other ways or how they are using those 20 words. To address these concerns, we developed the Low Verbal Investigatory Survey (LVIS), a one-page parent-report measure designed to help us characterize how minimally verbal autistic children are communicating. Parents of 147 children (aged 1-8?years) completed the LVIS. Here, we ask (1) whether the survey measures what it was designed to measure, that is, communicative ability in children without much spoken language, and (2) how the LVIS relates to cognitive and language ability, and symptoms of autism. Results suggest that this survey, which takes only 5?min to complete, is a good estimate of the child?s communication skills. Furthermore, LVIS survey scores are correlated with other measures of language and cognitive abilities as well as autism symptomatology. The LVIS has the potential to save time and money in both clinical and research efforts to assess communication skills in minimally verbal autistic children. En ligne : http://dx.doi.org/10.1177/13623613221136657 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=507 [article] Exploring communicative competence in autistic children who are minimally verbal: The Low Verbal Investigatory Survey for Autism (LVIS) [Texte imprimé et/ou numérique] / Adam NAPLES, Auteur ; Elena J. TENENBAUM, Auteur ; Richard N. JONES, Auteur ; Giulia RIGHI, Auteur ; Stephen J. SHEINKOPF, Auteur ; Inge-Marie EIGSTI, Auteur . - p.1391-1406. Langues : Anglais (eng) in Autism > 27-5 (July 2023) . - p.1391-1406 Mots-clés : autism spectrum disorder;assessment;communication;language;LVIS;minimally verbal Index. décimale : PER Périodiques Résumé : Approximately 30% of autistic children are considered minimally verbal. The field lacks an efficient and reliable measure of communicative capacity among minimally verbal autistic children. Improved methods are needed to determine which children are at greatest risk for minimally verbal outcomes to better target interventions. Here, we present the Low Verbal Investigatory Survey (LVIS), a brief parent-report measure designed to assess communicative capacity among minimally verbal autistic children. The 36-item easy-to-complete LVIS was developed to capture the atypical language trajectories associated specifically with autism. We report pilot results from a sample of 147 children (1-8?years) whose caregivers completed the LVIS as part of other studies. Principal components analysis was used to assess dimensionality of the LVIS; composite scores were compared with existing measures of communicative capacity, all of which take significantly more time and training to administer and score. Scores on the LVIS were strongly correlated with existing gold-standard measures of communication. Presence of atypical vocalizations was determined to be particularly relevant for symptoms of autism as well as language and cognitive abilities. These findings provide initial validation of a tool designed to capture multiple dimensions of communicative capacity in children with minimal or low verbal skills. Lay abstract Approximately one in three autistic children is unable to communicate with language; this state is often described as minimally verbal. Despite the tremendous clinical implications, we cannot predict whether a minimally verbal child is simply delayed (but will eventually develop spoken language) or will continue to struggle with verbal language, and might therefore benefit from learning an alternative form of communication. This is important for clinicians to know, to be able to choose the most helpful interventions, such as alternative forms of communication. In addition, the field lacks a standard definition of "minimally verbal." Even when we do agree on what the term means (e.g. fewer than 20 words), describing a child based on their lack of words does not tell us whether that child is communicating in other ways or how they are using those 20 words. To address these concerns, we developed the Low Verbal Investigatory Survey (LVIS), a one-page parent-report measure designed to help us characterize how minimally verbal autistic children are communicating. Parents of 147 children (aged 1-8?years) completed the LVIS. Here, we ask (1) whether the survey measures what it was designed to measure, that is, communicative ability in children without much spoken language, and (2) how the LVIS relates to cognitive and language ability, and symptoms of autism. Results suggest that this survey, which takes only 5?min to complete, is a good estimate of the child?s communication skills. Furthermore, LVIS survey scores are correlated with other measures of language and cognitive abilities as well as autism symptomatology. The LVIS has the potential to save time and money in both clinical and research efforts to assess communication skills in minimally verbal autistic children. En ligne : http://dx.doi.org/10.1177/13623613221136657 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=507

Frontal EEG alpha asymmetry in youth with autism: Sex differences and social-emotional correlates / Megha SANTHOSH ; Anna KRESSE ; Elizabeth AYLWARD ; Raphael BERNIER ; Susan BOOKHEIMER ; Shafali JESTE ; Allison JACK ; James C. MCPARTLAND ; Adam NAPLES ; John D. VAN HORN ; Kevin 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 et/ou numérique Auteurs : Megha SANTHOSH, Auteur ; Anna KRESSE, Auteur ; Elizabeth AYLWARD, Auteur ; Raphael BERNIER, Auteur ; Susan BOOKHEIMER, Auteur ; Shafali JESTE, Auteur ; Allison JACK, Auteur ; James C. MCPARTLAND, Auteur ; Adam NAPLES, Auteur ; John D. VAN HORN, Auteur ; Kevin 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 et/ou numérique] / Megha SANTHOSH, Auteur ; Anna KRESSE, Auteur ; Elizabeth AYLWARD, Auteur ; Raphael BERNIER, Auteur ; Susan BOOKHEIMER, Auteur ; Shafali JESTE, Auteur ; Allison JACK, Auteur ; James C. MCPARTLAND, Auteur ; Adam NAPLES, Auteur ; John D. VAN HORN, Auteur ; Kevin 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

Patterns of intervention utilization among school-aged children on the autism spectrum: Findings from a multi-site research consortium / Aksheya SRIDHAR in Research in Autism Spectrum Disorders, 94 (June 2022)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 94 (June 2022) . - 101950 Titre : Patterns of intervention utilization among school-aged children on the autism spectrum: Findings from a multi-site research consortium Type de document : Texte imprimé et/ou numérique Auteurs : Aksheya SRIDHAR, Auteur ; Jocelyn KUHN, Auteur ; Susan FAJA, Auteur ; Maura SABATOS-DEVITO, Auteur ; Julia I. NIKOLAEVA, Auteur ; Geraldine DAWSON, Auteur ; Charles A. NELSON, Auteur ; Sara J. WEBB, Auteur ; Raphael BERNIER, Auteur ; Shafali JESTE, Auteur ; Katarzyna CHAWARSKA, Auteur ; Catherine A. SUGAR, Auteur ; Frederick SHIC, Auteur ; Adam NAPLES, Auteur ; James DZIURA, Auteur ; James C. MCPARTLAND, Auteur ; THE A. B. C. C. T. CONSORTIUM, Auteur Article en page(s) : 101950 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Child characteristics  Family characteristics  Geographical location  Intervention use Index. décimale : PER Périodiques Résumé : When designing and interpreting results from clinical trials evaluating treatments for children on the autism spectrum, a complicating factor is that most children receive a range of concurrent treatments. Thus, it is important to better understand the types and hours of interventions that participants typically receive as part of standard of care, as well as to understand the child, family, and geographic factors that are associated with different patterns of service utilization. In this multi-site study, we interviewed 280 caregivers of 6-to-11-year-old school-aged children on the autism spectrum about the types and amounts of interventions their children received in the prior 6 weeks. Reported interventions were coded as ?evidence-based practice? or ?other interventions,? reflecting the level of empirical support. Results indicated that children received a variety of interventions with varying levels of empirical evidence and a wide range of hours (0?79.3 h/week). Children with higher autism symptom levels, living in particular states, and who identified as non-Hispanic received more evidence-based intervention hours. Higher parental education level related to more hours of other interventions. Children who were younger, had lower cognitive ability, and with higher autism symptom levels received a greater variety of interventions overall. Thus, based on our findings, it would seem prudent when designing clinical trials to take into consideration a variety of factors including autism symptom levels, age, cognitive ability, ethnicity, parent education and geographic location. Future research should continue to investigate the ethnic, racial, and socioeconomic influences on school-aged intervention services. En ligne : https://doi.org/10.1016/j.rasd.2022.101950 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=476 [article] Patterns of intervention utilization among school-aged children on the autism spectrum: Findings from a multi-site research consortium [Texte imprimé et/ou numérique] / Aksheya SRIDHAR, Auteur ; Jocelyn KUHN, Auteur ; Susan FAJA, Auteur ; Maura SABATOS-DEVITO, Auteur ; Julia I. NIKOLAEVA, Auteur ; Geraldine DAWSON, Auteur ; Charles A. NELSON, Auteur ; Sara J. WEBB, Auteur ; Raphael BERNIER, Auteur ; Shafali JESTE, Auteur ; Katarzyna CHAWARSKA, Auteur ; Catherine A. SUGAR, Auteur ; Frederick SHIC, Auteur ; Adam NAPLES, Auteur ; James DZIURA, Auteur ; James C. MCPARTLAND, Auteur ; THE A. B. C. C. T. CONSORTIUM, Auteur . - 101950. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 94 (June 2022) . - 101950 Mots-clés : Autism spectrum disorder  Child characteristics  Family characteristics  Geographical location  Intervention use Index. décimale : PER Périodiques Résumé : When designing and interpreting results from clinical trials evaluating treatments for children on the autism spectrum, a complicating factor is that most children receive a range of concurrent treatments. Thus, it is important to better understand the types and hours of interventions that participants typically receive as part of standard of care, as well as to understand the child, family, and geographic factors that are associated with different patterns of service utilization. In this multi-site study, we interviewed 280 caregivers of 6-to-11-year-old school-aged children on the autism spectrum about the types and amounts of interventions their children received in the prior 6 weeks. Reported interventions were coded as ?evidence-based practice? or ?other interventions,? reflecting the level of empirical support. Results indicated that children received a variety of interventions with varying levels of empirical evidence and a wide range of hours (0?79.3 h/week). Children with higher autism symptom levels, living in particular states, and who identified as non-Hispanic received more evidence-based intervention hours. Higher parental education level related to more hours of other interventions. Children who were younger, had lower cognitive ability, and with higher autism symptom levels received a greater variety of interventions overall. Thus, based on our findings, it would seem prudent when designing clinical trials to take into consideration a variety of factors including autism symptom levels, age, cognitive ability, ethnicity, parent education and geographic location. Future research should continue to investigate the ethnic, racial, and socioeconomic influences on school-aged intervention services. En ligne : https://doi.org/10.1016/j.rasd.2022.101950 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=476

The relationship between gamma-band neural oscillations and language skills in youth with Autism Spectrum Disorder and their first-degree relatives / Vardan ARUTIUNIAN in Molecular Autism, 15 (2024)  

Public ISBD [article]  inMolecular Autism > 15 (2024) . - 19p. Titre : The relationship between gamma-band neural oscillations and language skills in youth with Autism Spectrum Disorder and their first-degree relatives Type de document : Texte imprimé et/ou numérique Auteurs : Vardan ARUTIUNIAN, Auteur ; Megha SANTHOSH, Auteur ; Emily NEUHAUS, Auteur ; Heather BORLAND, Auteur ; Chris TOMPKINS, Auteur ; Raphael A. BERNIER, Auteur ; Susan Y. BOOKHEIMER, Auteur ; Mirella DAPRETTO, Auteur ; Abha R. GUPTA, Auteur ; Allison JACK, Auteur ; Shafali JESTE, Auteur ; James C. MCPARTLAND, Auteur ; Adam NAPLES, Auteur ; John D. VAN HORN, Auteur ; Kevin A. PELPHREY, Auteur ; Sara Jane WEBB, Auteur Article en page(s) : 19p. Langues : Anglais (eng) Mots-clés : Humans  Autism Spectrum Disorder/physiopathology/psychology  Male  Female  Adolescent  Gamma Rhythm  Child  Electroencephalography  Language  Family  Siblings  Autism Spectrum Disorder (ASD)  Excitation/inhibition balance  Gamma power  Language skills  Unaffected siblings  Health, and BlackThorn Therapeutics, has received research funding from Janssen  Research and Development, serves on the Scientific Advisory Boards of Pastorus  and Modern Clinics, and receives royalties from Guilford Press, Lambert, Oxford,  and Springer. The remaining authors have no conflict of interest to declare. Index. décimale : PER Périodiques Résumé : BACKGROUND: Most children with Autism Spectrum Disorder (ASD) have co-occurring language impairments and some of these autism-specific language difficulties are also present in their non-autistic first-degree relatives. One of the possible neural mechanisms associated with variability in language functioning is alterations in cortical gamma-band oscillations, hypothesized to be related to neural excitation and inhibition balance. METHODS: We used a high-density 128-channel electroencephalography (EEG) to register brain response to speech stimuli in a large sex-balanced sample of participants: 125 youth with ASD, 121 typically developing (TD) youth, and 40 unaffected siblings (US) of youth with ASD. Language skills were assessed with Clinical Evaluation of Language Fundamentals. RESULTS: First, during speech processing, we identified significantly elevated gamma power in ASD participants compared to TD controls. Second, across all youth, higher gamma power was associated with lower language skills. Finally, the US group demonstrated an intermediate profile in both language and gamma power, with nonverbal IQ mediating the relationship between gamma power and language skills. LIMITATIONS: We only focused on one of the possible neural contributors to variability in language functioning. Also, the US group consisted of a smaller number of participants in comparison to the ASD or TD groups. Finally, due to the timing issue in EEG system we have provided only non-phase-locked analysis. CONCLUSIONS: Autistic youth showed elevated gamma power, suggesting higher excitation in the brain in response to speech stimuli and elevated gamma power was related to lower language skills. The US group showed an intermediate pattern of gamma activity, suggesting that the broader autism phenotype extends to neural profiles. En ligne : https://dx.doi.org/10.1186/s13229-024-00598-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=538 [article] The relationship between gamma-band neural oscillations and language skills in youth with Autism Spectrum Disorder and their first-degree relatives [Texte imprimé et/ou numérique] / Vardan ARUTIUNIAN, Auteur ; Megha SANTHOSH, Auteur ; Emily NEUHAUS, Auteur ; Heather BORLAND, Auteur ; Chris TOMPKINS, Auteur ; Raphael A. BERNIER, Auteur ; Susan Y. BOOKHEIMER, Auteur ; Mirella DAPRETTO, Auteur ; Abha R. GUPTA, Auteur ; Allison JACK, Auteur ; Shafali JESTE, Auteur ; James C. MCPARTLAND, Auteur ; Adam NAPLES, Auteur ; John D. VAN HORN, Auteur ; Kevin A. PELPHREY, Auteur ; Sara Jane WEBB, Auteur . - 19p. Langues : Anglais (eng) in Molecular Autism > 15 (2024) . - 19p. Mots-clés : Humans  Autism Spectrum Disorder/physiopathology/psychology  Male  Female  Adolescent  Gamma Rhythm  Child  Electroencephalography  Language  Family  Siblings  Autism Spectrum Disorder (ASD)  Excitation/inhibition balance  Gamma power  Language skills  Unaffected siblings  Health, and BlackThorn Therapeutics, has received research funding from Janssen  Research and Development, serves on the Scientific Advisory Boards of Pastorus  and Modern Clinics, and receives royalties from Guilford Press, Lambert, Oxford,  and Springer. The remaining authors have no conflict of interest to declare. Index. décimale : PER Périodiques Résumé : BACKGROUND: Most children with Autism Spectrum Disorder (ASD) have co-occurring language impairments and some of these autism-specific language difficulties are also present in their non-autistic first-degree relatives. One of the possible neural mechanisms associated with variability in language functioning is alterations in cortical gamma-band oscillations, hypothesized to be related to neural excitation and inhibition balance. METHODS: We used a high-density 128-channel electroencephalography (EEG) to register brain response to speech stimuli in a large sex-balanced sample of participants: 125 youth with ASD, 121 typically developing (TD) youth, and 40 unaffected siblings (US) of youth with ASD. Language skills were assessed with Clinical Evaluation of Language Fundamentals. RESULTS: First, during speech processing, we identified significantly elevated gamma power in ASD participants compared to TD controls. Second, across all youth, higher gamma power was associated with lower language skills. Finally, the US group demonstrated an intermediate profile in both language and gamma power, with nonverbal IQ mediating the relationship between gamma power and language skills. LIMITATIONS: We only focused on one of the possible neural contributors to variability in language functioning. Also, the US group consisted of a smaller number of participants in comparison to the ASD or TD groups. Finally, due to the timing issue in EEG system we have provided only non-phase-locked analysis. CONCLUSIONS: Autistic youth showed elevated gamma power, suggesting higher excitation in the brain in response to speech stimuli and elevated gamma power was related to lower language skills. The US group showed an intermediate pattern of gamma activity, suggesting that the broader autism phenotype extends to neural profiles. En ligne : https://dx.doi.org/10.1186/s13229-024-00598-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=538

---

1 (1 - 5 / 5)