Audition-specific temporal processing deficits associated with language function in children with autism spectrum disorder / Jennifer H. FOSS-FEIG in Autism Research, 10-11 (November 2017)  

Public ISBD [article]  inAutism Research > 10-11 (November 2017) . - p.1845-1856 Titre : Audition-specific temporal processing deficits associated with language function in children with autism spectrum disorder Type de document : texte imprimé Auteurs : Jennifer H. FOSS-FEIG, Auteur ; Kimberly B. SCHAUDER, Auteur ; Alexandra P. KEY, Auteur ; Mark T. WALLACE, Auteur ; Wendy L. STONE, Auteur Article en page(s) : p.1845-1856 Langues : Anglais (eng) Mots-clés : ASD  audition  vision  temporal processing  language  low level perception Index. décimale : PER Périodiques Résumé : Sensory processing alterations are highly prevalent in autism spectrum disorder (ASD). Neurobiologically-based theories of ASD propose that abnormalities in the processing of temporal aspects of sensory input could underlie core symptoms of ASD. For example, rapid auditory temporal processing is critical for speech perception, and language difficulties are central to the social communication deficits defining the disorder. This study assessed visual and auditory temporal processing abilities and tested their relation to core ASD symptoms. 53 children (26 ASD, 27 TD) completed visual and auditory psychophysical gap detection tasks to measure gap detection thresholds (i.e., the minimum interval between sequential stimuli needed for individuals to perceive an interruption between the stimuli) in each domain. Children were also administered standardized language assessments such that the relation between individual differences in auditory gap detection thresholds and degree of language and communication difficulties among children with ASD could be assessed. Children with ASD had substantially higher auditory gap detection thresholds compared to children with TD, and auditory gap detection thresholds were correlated significantly with several measures of language processing in this population. No group differences were observed in the visual temporal processing. Results indicate a domain-specific impairment in rapid auditory temporal processing in ASD that is associated with greater difficulties in language processing. Findings provide qualified support for temporal processing theories of ASD and highlight the need for future research testing the nature, extent, and universality of auditory temporal processing deficits in this population. Autism Res 2017, 10: 1845–1856. © 2017 International Society for Autism Research, Wiley Periodicals, Inc. Lay Summary Sensory symptoms are common in ASD. Temporal processing alterations are often implicated, but understudied. The ability to process rapid sensory information, particularly auditory input, is critical for language functioning. This study tested auditory and visual temporal processing in ASD and controls. Findings suggest that rapid auditory (but not visual) processing is impaired in ASD and related to language functioning. These results could provide mechanistic clues to understanding core symptoms and lead to novel intervention targets. En ligne : http://dx.doi.org/10.1002/aur.1820 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=322 [article] Audition-specific temporal processing deficits associated with language function in children with autism spectrum disorder [texte imprimé] / Jennifer H. FOSS-FEIG, Auteur ; Kimberly B. SCHAUDER, Auteur ; Alexandra P. KEY, Auteur ; Mark T. WALLACE, Auteur ; Wendy L. STONE, Auteur . - p.1845-1856. Langues : Anglais (eng) in Autism Research > 10-11 (November 2017) . - p.1845-1856 Mots-clés : ASD  audition  vision  temporal processing  language  low level perception Index. décimale : PER Périodiques Résumé : Sensory processing alterations are highly prevalent in autism spectrum disorder (ASD). Neurobiologically-based theories of ASD propose that abnormalities in the processing of temporal aspects of sensory input could underlie core symptoms of ASD. For example, rapid auditory temporal processing is critical for speech perception, and language difficulties are central to the social communication deficits defining the disorder. This study assessed visual and auditory temporal processing abilities and tested their relation to core ASD symptoms. 53 children (26 ASD, 27 TD) completed visual and auditory psychophysical gap detection tasks to measure gap detection thresholds (i.e., the minimum interval between sequential stimuli needed for individuals to perceive an interruption between the stimuli) in each domain. Children were also administered standardized language assessments such that the relation between individual differences in auditory gap detection thresholds and degree of language and communication difficulties among children with ASD could be assessed. Children with ASD had substantially higher auditory gap detection thresholds compared to children with TD, and auditory gap detection thresholds were correlated significantly with several measures of language processing in this population. No group differences were observed in the visual temporal processing. Results indicate a domain-specific impairment in rapid auditory temporal processing in ASD that is associated with greater difficulties in language processing. Findings provide qualified support for temporal processing theories of ASD and highlight the need for future research testing the nature, extent, and universality of auditory temporal processing deficits in this population. Autism Res 2017, 10: 1845–1856. © 2017 International Society for Autism Research, Wiley Periodicals, Inc. Lay Summary Sensory symptoms are common in ASD. Temporal processing alterations are often implicated, but understudied. The ability to process rapid sensory information, particularly auditory input, is critical for language functioning. This study tested auditory and visual temporal processing in ASD and controls. Findings suggest that rapid auditory (but not visual) processing is impaired in ASD and related to language functioning. These results could provide mechanistic clues to understanding core symptoms and lead to novel intervention targets. En ligne : http://dx.doi.org/10.1002/aur.1820 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=322

Characterizing the Relationship Among the Social Competence Elements in Autistic Adolescents / Alexandra P. KEY in Autism Research, 18-10 (October 2025)  

Public ISBD [article]  inAutism Research > 18-10 (October 2025) . - p.1999-2010 Titre : Characterizing the Relationship Among the Social Competence Elements in Autistic Adolescents Type de document : texte imprimé Auteurs : Alexandra P. KEY, Auteur ; Trey MCGONIGLE, Auteur ; Jinyuan LIU, Auteur ; Rachael A. MUSCATELLO, Auteur ; Philip GABLE, Auteur ; Susan WHITE, Auteur ; Matthew D. LERNER, Auteur ; Blythe A. CORBETT, Auteur Article en page(s) : p.1999-2010 Langues : Anglais (eng) Mots-clés : autism  behavior  brain  cognition  social competence  theory of mind Index. décimale : PER Périodiques Résumé : ABSTRACT Individuals with autism spectrum disorder have significant difficulties in social competence. This study provided empirical evaluation of the theoretical model by Kennedy and Adolphs (2012) positing that social competence relies on an interconnected network of four components: social brain, cognition, behavior, and functioning. Data from 243 youth (69 female, 174 male), age 10?17?years, were used to test the hypothesized mediation effect of social cognition (Theory of Mind) from social brain (event-related potential markers of face perception and memory) to social behavior (Contextual Assessment of Social Skills) and functioning (Child Behavior Checklist). An additional analysis evaluated whether the structure of the social competence model varied based on the biological sex of the autistic participants. The findings support the conceptual model of social competence where the social brain's contributions to social behavior and functioning are mediated by social cognition, with an additional direct path between the brain and behavior. The relationship among the four components of social competence is not significantly different for autistic males and females. Social competence is best represented as a network of direct and indirect connections among the neural, cognitive, and behavioral components. Thus, focusing on any single element is not sufficient for effective design of novel assessment and treatment approaches in autism. The findings also highlight the importance of self-initiated active engagement with social cues as a contributor to successful social behavior and functioning in autism. En ligne : https://doi.org/10.1002/aur.70095 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=569 [article] Characterizing the Relationship Among the Social Competence Elements in Autistic Adolescents [texte imprimé] / Alexandra P. KEY, Auteur ; Trey MCGONIGLE, Auteur ; Jinyuan LIU, Auteur ; Rachael A. MUSCATELLO, Auteur ; Philip GABLE, Auteur ; Susan WHITE, Auteur ; Matthew D. LERNER, Auteur ; Blythe A. CORBETT, Auteur . - p.1999-2010. Langues : Anglais (eng) in Autism Research > 18-10 (October 2025) . - p.1999-2010 Mots-clés : autism  behavior  brain  cognition  social competence  theory of mind Index. décimale : PER Périodiques Résumé : ABSTRACT Individuals with autism spectrum disorder have significant difficulties in social competence. This study provided empirical evaluation of the theoretical model by Kennedy and Adolphs (2012) positing that social competence relies on an interconnected network of four components: social brain, cognition, behavior, and functioning. Data from 243 youth (69 female, 174 male), age 10?17?years, were used to test the hypothesized mediation effect of social cognition (Theory of Mind) from social brain (event-related potential markers of face perception and memory) to social behavior (Contextual Assessment of Social Skills) and functioning (Child Behavior Checklist). An additional analysis evaluated whether the structure of the social competence model varied based on the biological sex of the autistic participants. The findings support the conceptual model of social competence where the social brain's contributions to social behavior and functioning are mediated by social cognition, with an additional direct path between the brain and behavior. The relationship among the four components of social competence is not significantly different for autistic males and females. Social competence is best represented as a network of direct and indirect connections among the neural, cognitive, and behavioral components. Thus, focusing on any single element is not sufficient for effective design of novel assessment and treatment approaches in autism. The findings also highlight the importance of self-initiated active engagement with social cues as a contributor to successful social behavior and functioning in autism. En ligne : https://doi.org/10.1002/aur.70095 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=569

Comparison of evoked potentials across four related developmental encephalopathies / Joni N. SABY in Journal of Neurodevelopmental Disorders, 15 (2023)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 15 (2023) Titre : Comparison of evoked potentials across four related developmental encephalopathies Type de document : texte imprimé Auteurs : Joni N. SABY, Auteur ; Sarika U. PETERS, Auteur ; Timothy A. BENKE, Auteur ; Shannon M. STANDRIDGE, Auteur ; Lindsay C. SWANSON, Auteur ; David N. LIEBERMAN, Auteur ; Heather E. OLSON, Auteur ; Alexandra P. KEY, Auteur ; Alan K. PERCY, Auteur ; Jeffrey L. NEUL, Auteur ; Charles A. NELSON, Auteur ; Timothy P.L. ROBERTS, Auteur ; Eric D. MARSH, Auteur Langues : Anglais (eng) Mots-clés : Epileptic Syndromes  Rett Syndrome  X-Linked Intellectual Disability  Child  Humans  Spasms, Infantile  Evoked Potentials  Evoked Potentials, Visual Index. décimale : PER Périodiques Résumé : BACKGROUND: Developing biomarkers is a priority for drug development for all conditions, but vital in the rare neurodevelopmental disorders where sensitive outcome measures are lacking. We have previously demonstrated the feasibility and tracking of evoked potentials to disease severity in Rett syndrome and CDKL5 deficiency disorder. The aim of the current study is to characterize evoked potentials in two related developmental encephalopathies, MECP2 duplication syndrome and FOXG1 syndrome, and compare across all four groups to better understand the potential of these measures to serve as biomarkers of clinical severity for the developmental encephalopathies. METHODS: Visual and auditory evoked potentials were acquired from participants with MECP2 duplication syndrome and FOXG1 syndrome across five sites of the Rett Syndrome and Rett-Related Disorders Natural History Study. A group of age-matched individuals (mean = 7.8 years; range = 1-17) with Rett syndrome, CDKL5 deficiency disorder, and typically-developing participants served as a comparison group. The analysis focused on group-level differences as well as associations between the evoked potentials and measures of clinical severity from the Natural History Study. RESULTS: As reported previously, group-level comparisons revealed attenuated visual evoked potentials (VEPs) in participants with Rett syndrome (n = 43) and CDKL5 deficiency disorder (n = 16) compared to typically-developing participants. VEP amplitude was also attenuated in participants with MECP2 duplication syndrome (n = 15) compared to the typically-developing group. VEP amplitude correlated with clinical severity for Rett syndrome and FOXG1 syndrome (n = 5). Auditory evoked potential (AEP) amplitude did not differ between groups, but AEP latency was prolonged in individuals with MECP2 duplication syndrome (n = 14) and FOXG1 syndrome (n = 6) compared to individuals with Rett syndrome (n = 51) and CDKL5 deficiency disorder (n = 14). AEP amplitude correlated with severity in Rett syndrome and CDKL5 deficiency disorder. AEP latency correlated with severity in CDKL5 deficiency disorder, MECP2 duplication syndrome, and FOXG1 syndrome. CONCLUSIONS: There are consistent abnormalities in the evoked potentials in four developmental encephalopathies some of which correlate with clinical severity. While there are consistent changes amongst these four disorders, there are also condition specific findings that need to be further refined and validated. Overall, these results provide a foundation for further refinement of these measures for use in future clinical trials for these conditions. En ligne : https://dx.doi.org/10.1186/s11689-023-09479-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=575 [article] Comparison of evoked potentials across four related developmental encephalopathies [texte imprimé] / Joni N. SABY, Auteur ; Sarika U. PETERS, Auteur ; Timothy A. BENKE, Auteur ; Shannon M. STANDRIDGE, Auteur ; Lindsay C. SWANSON, Auteur ; David N. LIEBERMAN, Auteur ; Heather E. OLSON, Auteur ; Alexandra P. KEY, Auteur ; Alan K. PERCY, Auteur ; Jeffrey L. NEUL, Auteur ; Charles A. NELSON, Auteur ; Timothy P.L. ROBERTS, Auteur ; Eric D. MARSH, Auteur. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 15 (2023) Mots-clés : Epileptic Syndromes  Rett Syndrome  X-Linked Intellectual Disability  Child  Humans  Spasms, Infantile  Evoked Potentials  Evoked Potentials, Visual Index. décimale : PER Périodiques Résumé : BACKGROUND: Developing biomarkers is a priority for drug development for all conditions, but vital in the rare neurodevelopmental disorders where sensitive outcome measures are lacking. We have previously demonstrated the feasibility and tracking of evoked potentials to disease severity in Rett syndrome and CDKL5 deficiency disorder. The aim of the current study is to characterize evoked potentials in two related developmental encephalopathies, MECP2 duplication syndrome and FOXG1 syndrome, and compare across all four groups to better understand the potential of these measures to serve as biomarkers of clinical severity for the developmental encephalopathies. METHODS: Visual and auditory evoked potentials were acquired from participants with MECP2 duplication syndrome and FOXG1 syndrome across five sites of the Rett Syndrome and Rett-Related Disorders Natural History Study. A group of age-matched individuals (mean = 7.8 years; range = 1-17) with Rett syndrome, CDKL5 deficiency disorder, and typically-developing participants served as a comparison group. The analysis focused on group-level differences as well as associations between the evoked potentials and measures of clinical severity from the Natural History Study. RESULTS: As reported previously, group-level comparisons revealed attenuated visual evoked potentials (VEPs) in participants with Rett syndrome (n = 43) and CDKL5 deficiency disorder (n = 16) compared to typically-developing participants. VEP amplitude was also attenuated in participants with MECP2 duplication syndrome (n = 15) compared to the typically-developing group. VEP amplitude correlated with clinical severity for Rett syndrome and FOXG1 syndrome (n = 5). Auditory evoked potential (AEP) amplitude did not differ between groups, but AEP latency was prolonged in individuals with MECP2 duplication syndrome (n = 14) and FOXG1 syndrome (n = 6) compared to individuals with Rett syndrome (n = 51) and CDKL5 deficiency disorder (n = 14). AEP amplitude correlated with severity in Rett syndrome and CDKL5 deficiency disorder. AEP latency correlated with severity in CDKL5 deficiency disorder, MECP2 duplication syndrome, and FOXG1 syndrome. CONCLUSIONS: There are consistent abnormalities in the evoked potentials in four developmental encephalopathies some of which correlate with clinical severity. While there are consistent changes amongst these four disorders, there are also condition specific findings that need to be further refined and validated. Overall, these results provide a foundation for further refinement of these measures for use in future clinical trials for these conditions. En ligne : https://dx.doi.org/10.1186/s11689-023-09479-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=575

Electrophysiological study of local/global processing in Williams syndrome / Alexandra P. KEY in Journal of Neurodevelopmental Disorders, 3-1 (March 2011)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 3-1 (March 2011) . - p.28-38 Titre : Electrophysiological study of local/global processing in Williams syndrome Type de document : texte imprimé Auteurs : Alexandra P. KEY, Auteur ; Elisabeth M. DYKENS, Auteur Article en page(s) : p.28-38 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Persons with Williams syndrome (WS) demonstrate pronounced deficits in visuo-spatial processing. The purpose of the current study was to examine the preferred level of perceptual analysis in young adults with WS (n = 21) and the role of attention in the processing of hierarchical stimuli. Navon-like letter stimuli were presented to adults with WS and age-matched typical controls in an oddball paradigm where local and global targets could appear with equal probability. Participants received no explicit instruction to direct their attention toward a particular stimulus level. Behavioral and event-related potential (ERP) data were recorded. Behavioral data indicated presence of a global precedence effect in persons with WS. However, their ERP responses revealed atypical brain mechanisms underlying attention to local information. During the early perceptual analysis, global targets resulted in reduced P1 and enhanced N150 responses in both participant groups. However, only the typical comparison group demonstrated a larger N150 to local targets. At the more advanced stages of cognitive processing, a larger P3b response to global and local targets was observed in the typical group but not in persons with WS, who instead demonstrated an enhanced P3a to global targets only. The results indicate that in a perceptual task, adults with WS may experience greater than typical global-to-local interference and not allocate sufficient attentional resources to local information. En ligne : http://dx.doi.org/10.1007/s11689-010-9064-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=343 [article] Electrophysiological study of local/global processing in Williams syndrome [texte imprimé] / Alexandra P. KEY, Auteur ; Elisabeth M. DYKENS, Auteur . - p.28-38. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 3-1 (March 2011) . - p.28-38 Index. décimale : PER Périodiques Résumé : Persons with Williams syndrome (WS) demonstrate pronounced deficits in visuo-spatial processing. The purpose of the current study was to examine the preferred level of perceptual analysis in young adults with WS (n = 21) and the role of attention in the processing of hierarchical stimuli. Navon-like letter stimuli were presented to adults with WS and age-matched typical controls in an oddball paradigm where local and global targets could appear with equal probability. Participants received no explicit instruction to direct their attention toward a particular stimulus level. Behavioral and event-related potential (ERP) data were recorded. Behavioral data indicated presence of a global precedence effect in persons with WS. However, their ERP responses revealed atypical brain mechanisms underlying attention to local information. During the early perceptual analysis, global targets resulted in reduced P1 and enhanced N150 responses in both participant groups. However, only the typical comparison group demonstrated a larger N150 to local targets. At the more advanced stages of cognitive processing, a larger P3b response to global and local targets was observed in the typical group but not in persons with WS, who instead demonstrated an enhanced P3a to global targets only. The results indicate that in a perceptual task, adults with WS may experience greater than typical global-to-local interference and not allocate sufficient attentional resources to local information. En ligne : http://dx.doi.org/10.1007/s11689-010-9064-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=343

Erratum to: Positive Affect Processing and Joint Attention in Infants at High Risk for Autism: An Exploratory Study / Alexandra P. KEY in Journal of Autism and Developmental Disorders, 45-12 (December 2015)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 45-12 (December 2015) . - p.4063-4063 Titre : Erratum to: Positive Affect Processing and Joint Attention in Infants at High Risk for Autism: An Exploratory Study Type de document : texte imprimé Auteurs : Alexandra P. KEY, Auteur ; Lisa V. IBANEZ, Auteur ; Heather A. HENDERSON, Auteur ; Zachary WARREN, Auteur ; Daniel S. MESSINGER, Auteur ; Wendy L. STONE, Auteur Article en page(s) : p.4063-4063 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Few behavioral indices of risk for autism spectrum disorders (ASD) are present before 12 months, and potential biomarkers remain largely unexamined. This prospective study of infant siblings of children with ASD (n = 16) and low-risk comparison infants (n = 15) examined group differences in event-related potentials (ERPs) indexing processing of facial positive affect (N290/P400, Nc) at 9 months and their relation to joint attention at 15 months. Group differences were most pronounced for subtle facial expressions, in that the low-risk group exhibited relatively longer processing (P400 latency) and greater attention resource allocation (Nc amplitude). Exploratory analyses found associations between ERP responses and later joint attention, suggesting that attention to positive affect cues may support the development of other social competencies. En ligne : http://dx.doi.org/10.1007/s10803-014-2213-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=274 [article] Erratum to: Positive Affect Processing and Joint Attention in Infants at High Risk for Autism: An Exploratory Study [texte imprimé] / Alexandra P. KEY, Auteur ; Lisa V. IBANEZ, Auteur ; Heather A. HENDERSON, Auteur ; Zachary WARREN, Auteur ; Daniel S. MESSINGER, Auteur ; Wendy L. STONE, Auteur . - p.4063-4063. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 45-12 (December 2015) . - p.4063-4063 Index. décimale : PER Périodiques Résumé : Few behavioral indices of risk for autism spectrum disorders (ASD) are present before 12 months, and potential biomarkers remain largely unexamined. This prospective study of infant siblings of children with ASD (n = 16) and low-risk comparison infants (n = 15) examined group differences in event-related potentials (ERPs) indexing processing of facial positive affect (N290/P400, Nc) at 9 months and their relation to joint attention at 15 months. Group differences were most pronounced for subtle facial expressions, in that the low-risk group exhibited relatively longer processing (P400 latency) and greater attention resource allocation (Nc amplitude). Exploratory analyses found associations between ERP responses and later joint attention, suggesting that attention to positive affect cues may support the development of other social competencies. En ligne : http://dx.doi.org/10.1007/s10803-014-2213-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=274

Examining the relationship between face processing and social interaction behavior in children with and without autism spectrum disorder / Blythe A. CORBETT in Journal of Neurodevelopmental Disorders, 6-1 (December 2014)  

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Improvement in Social Competence Using a Randomized Trial of a Theatre Intervention for Children with Autism Spectrum Disorder / Blythe A. CORBETT in Journal of Autism and Developmental Disorders, 46-2 (February 2016)  

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Investigating Social Competence in a Pilot Randomized Clinical Trial of a Theatre-Based Intervention Enhanced for Adults with Autism Spectrum Disorder / Blythe A. CORBETT ; Alexandra P. KEY ; Mark E. KLEMENCIC ; Rachael A. MUSCATELLO ; Dorita JONES ; Jennifer PILKINGTON ; Christina BURROUGHS ; Simon VANDEKAR in Journal of Autism and Developmental Disorders, 55-1 (January 2025)  

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Positive Affect Processing and Joint Attention in Infants at High Risk for Autism: An Exploratory Study / Alexandra P. KEY in Journal of Autism and Developmental Disorders, 45-12 (December 2015)  

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Same but Different: 9-Month-Old Infants at Average and High Risk for Autism Look at the Same Facial Features but Process Them Using Different Brain Mechanisms / Alexandra P. KEY in Autism Research, 5-4 (August 2012)  

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Sex differences in automatic emotion regulation in adolescents with autism spectrum disorder / Alexandra P. KEY in Autism Research, 15-4 (April 2022)  

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Social and emotional processing in Prader-Willi syndrome: genetic subtype differences / Alexandra P. KEY in Journal of Neurodevelopmental Disorders, 5-1 (December 2013)  

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