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Developmental differences in neural connectivity for semantic processing in youths with autism / L. Y. FAN in Journal of Child Psychology and Psychiatry, 62-9 (September 2021)
[article]
Titre : Developmental differences in neural connectivity for semantic processing in youths with autism Type de document : Texte imprimé et/ou numérique Auteurs : L. Y. FAN, Auteur ; James R. BOOTH, Auteur ; M. LIU, Auteur ; Tai-Li CHOU, Auteur ; S. S. GAU, Auteur Article en page(s) : p.1090-1099 Langues : Anglais (eng) Mots-clés : Adolescent Autism Spectrum Disorder Autistic Disorder Brain/diagnostic imaging Brain Mapping Child Humans Magnetic Resonance Imaging Neural Pathways Semantics Semantic differential difference fMRI functional connectivity psychophysiological interaction Index. décimale : PER Périodiques Résumé : BACKGROUND: Youths with autism spectrum disorder (ASD) rely more on lower-level visual processing as revealed by greater occipital activation, yet less effectively engage higher-level processing of modality-independent semantic knowledge as indicated by reduced frontal activation, compared to typically developing (TD) youths. However, little is known about age-dependent differences in neural connectivity during semantic processing in youths with ASD as compared to TD youths. METHODS: Four groups were recruited: 31 ASD children (mean age = 10.5 years old), 33 TD children (mean age = 10.4), 30 ASD adolescents (mean age = 14.9), and 34 TD adolescents (mean age = 15.1). We explored their differences in neural connectivity by using functional magnetic resonance imaging (fMRI) with psychophysiological interaction (PPI) during semantic judgments. RESULTS: In comparison with TD children, children with ASD showed greater activation in the left cuneus and weaker connectivity between the left cuneus and left middle temporal gyrus (MTG). In comparison with TD adolescents, adolescents with ASD showed less activation in the left inferior frontal gyrus (IFG) and weaker functional connectivity between the left IFG and left MTG. CONCLUSIONS: Children with ASD may rely more on visual processes in the occipital cortex that are disconnected from modality-independent semantics in the temporal cortex. However, adolescents with ASD may less effectively engage frontal mechanisms involved in the top-down control of modality-independent semantic knowledge in the temporal cortex. Our findings provide evidence of developmental differences in the neural substrates of the alterations in semantic processing in youths with ASD compared to TD youths. En ligne : http://dx.doi.org/10.1111/jcpp.13373 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=456
in Journal of Child Psychology and Psychiatry > 62-9 (September 2021) . - p.1090-1099[article] Developmental differences in neural connectivity for semantic processing in youths with autism [Texte imprimé et/ou numérique] / L. Y. FAN, Auteur ; James R. BOOTH, Auteur ; M. LIU, Auteur ; Tai-Li CHOU, Auteur ; S. S. GAU, Auteur . - p.1090-1099.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 62-9 (September 2021) . - p.1090-1099
Mots-clés : Adolescent Autism Spectrum Disorder Autistic Disorder Brain/diagnostic imaging Brain Mapping Child Humans Magnetic Resonance Imaging Neural Pathways Semantics Semantic differential difference fMRI functional connectivity psychophysiological interaction Index. décimale : PER Périodiques Résumé : BACKGROUND: Youths with autism spectrum disorder (ASD) rely more on lower-level visual processing as revealed by greater occipital activation, yet less effectively engage higher-level processing of modality-independent semantic knowledge as indicated by reduced frontal activation, compared to typically developing (TD) youths. However, little is known about age-dependent differences in neural connectivity during semantic processing in youths with ASD as compared to TD youths. METHODS: Four groups were recruited: 31 ASD children (mean age = 10.5 years old), 33 TD children (mean age = 10.4), 30 ASD adolescents (mean age = 14.9), and 34 TD adolescents (mean age = 15.1). We explored their differences in neural connectivity by using functional magnetic resonance imaging (fMRI) with psychophysiological interaction (PPI) during semantic judgments. RESULTS: In comparison with TD children, children with ASD showed greater activation in the left cuneus and weaker connectivity between the left cuneus and left middle temporal gyrus (MTG). In comparison with TD adolescents, adolescents with ASD showed less activation in the left inferior frontal gyrus (IFG) and weaker functional connectivity between the left IFG and left MTG. CONCLUSIONS: Children with ASD may rely more on visual processes in the occipital cortex that are disconnected from modality-independent semantics in the temporal cortex. However, adolescents with ASD may less effectively engage frontal mechanisms involved in the top-down control of modality-independent semantic knowledge in the temporal cortex. Our findings provide evidence of developmental differences in the neural substrates of the alterations in semantic processing in youths with ASD compared to TD youths. En ligne : http://dx.doi.org/10.1111/jcpp.13373 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=456 Atypical Neurophysiology Underlying Episodic and Semantic Memory in Adults with Autism Spectrum Disorder / Esha MASSAND in Journal of Autism and Developmental Disorders, 45-2 (February 2015)
[article]
Titre : Atypical Neurophysiology Underlying Episodic and Semantic Memory in Adults with Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Esha MASSAND, Auteur ; Dermot M. BOWLER, Auteur Article en page(s) : p.298-315 Langues : Anglais (eng) Mots-clés : Memory Episodic Semantic Source memory Autism spectrum disorder Event-related potential Index. décimale : PER Périodiques Résumé : Individuals with autism spectrum disorder (ASD) show atypicalities in episodic memory (Boucher et al. in Psychological Bulletin, 138 (3), 458–496, 2012). We asked participants to recall the colours of a set of studied line drawings (episodic judgement), or to recognize line drawings alone (semantic judgement). Cycowicz et al. (Journal of Experimental Child Psychology, 65, 171–237, 2001) found early (300 ms onset) posterior old–new event-related potential effects for semantic judgements in typically developing (TD) individuals, and occipitally focused negativity (800 ms onset) for episodic judgements. Our results replicated findings in TD individuals and demonstrate attenuated early old–new effects in ASD. Late posterior negativity was present in the ASD group, but was not specific to this time window. This non-specificity may contribute to the atypical episodic memory judgements characteristic of individuals with ASD. En ligne : http://dx.doi.org/10.1007/s10803-013-1869-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=258
in Journal of Autism and Developmental Disorders > 45-2 (February 2015) . - p.298-315[article] Atypical Neurophysiology Underlying Episodic and Semantic Memory in Adults with Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Esha MASSAND, Auteur ; Dermot M. BOWLER, Auteur . - p.298-315.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 45-2 (February 2015) . - p.298-315
Mots-clés : Memory Episodic Semantic Source memory Autism spectrum disorder Event-related potential Index. décimale : PER Périodiques Résumé : Individuals with autism spectrum disorder (ASD) show atypicalities in episodic memory (Boucher et al. in Psychological Bulletin, 138 (3), 458–496, 2012). We asked participants to recall the colours of a set of studied line drawings (episodic judgement), or to recognize line drawings alone (semantic judgement). Cycowicz et al. (Journal of Experimental Child Psychology, 65, 171–237, 2001) found early (300 ms onset) posterior old–new event-related potential effects for semantic judgements in typically developing (TD) individuals, and occipitally focused negativity (800 ms onset) for episodic judgements. Our results replicated findings in TD individuals and demonstrate attenuated early old–new effects in ASD. Late posterior negativity was present in the ASD group, but was not specific to this time window. This non-specificity may contribute to the atypical episodic memory judgements characteristic of individuals with ASD. En ligne : http://dx.doi.org/10.1007/s10803-013-1869-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=258 Brief Report: Predicting Social Skills from Semantic, Syntactic, and Pragmatic Language Among Young Children with Autism Spectrum Disorder / Sarah LEVINSON in Journal of Autism and Developmental Disorders, 50-11 (November 2020)
[article]
Titre : Brief Report: Predicting Social Skills from Semantic, Syntactic, and Pragmatic Language Among Young Children with Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Sarah LEVINSON, Auteur ; Abbey EISENHOWER, Auteur ; Hillary H. BUSH, Auteur ; Alice S. CARTER, Auteur ; Jan BLACHER, Auteur Article en page(s) : p.4165-4175 Langues : Anglais (eng) Mots-clés : Asd Autism spectrum disorder Grammar Language skills Pragmatic Semantic Social skills Syntax Vocabulary Young children Index. décimale : PER Périodiques Résumé : The language and social skill deficits associated with autism spectrum disorder (ASD) warrant further study. Existing research has focused on the contributions of pragmatic language to social skills, with little attention to other aspects of language. We examined the associations across three language domains (semantics, syntax, and pragmatics) and their relations to parent- and teacher-rated social skills among children with ASD. When parent-reported language skills were considered simultaneously, only semantics significantly predicted children's social skills. For teacher-reported language skills, all three language domains predicted children's social skills, but none made unique contributions above and beyond one another. Further research should consider the impact of social context on language expectations and interventions targeting semantic language on children's development of social skills. En ligne : http://dx.doi.org/10.1007/s10803-020-04445-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=432
in Journal of Autism and Developmental Disorders > 50-11 (November 2020) . - p.4165-4175[article] Brief Report: Predicting Social Skills from Semantic, Syntactic, and Pragmatic Language Among Young Children with Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Sarah LEVINSON, Auteur ; Abbey EISENHOWER, Auteur ; Hillary H. BUSH, Auteur ; Alice S. CARTER, Auteur ; Jan BLACHER, Auteur . - p.4165-4175.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 50-11 (November 2020) . - p.4165-4175
Mots-clés : Asd Autism spectrum disorder Grammar Language skills Pragmatic Semantic Social skills Syntax Vocabulary Young children Index. décimale : PER Périodiques Résumé : The language and social skill deficits associated with autism spectrum disorder (ASD) warrant further study. Existing research has focused on the contributions of pragmatic language to social skills, with little attention to other aspects of language. We examined the associations across three language domains (semantics, syntax, and pragmatics) and their relations to parent- and teacher-rated social skills among children with ASD. When parent-reported language skills were considered simultaneously, only semantics significantly predicted children's social skills. For teacher-reported language skills, all three language domains predicted children's social skills, but none made unique contributions above and beyond one another. Further research should consider the impact of social context on language expectations and interventions targeting semantic language on children's development of social skills. En ligne : http://dx.doi.org/10.1007/s10803-020-04445-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=432