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)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 45-2 (February 2015) . - p.298-315 Titre : Atypical Neurophysiology Underlying Episodic and Semantic Memory in Adults with Autism Spectrum Disorder Type de document : texte imprimé 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 [article] Atypical Neurophysiology Underlying Episodic and Semantic Memory in Adults with Autism Spectrum Disorder [texte imprimé] / 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

Cascading Genetic and Environmental Effects on Development: Implications for Intervention / Esha MASSAND

Public ISBD in The Genetics of Neurodevelopmental Disorders / Kevin J. MITCHELL Titre : Cascading Genetic and Environmental Effects on Development: Implications for Intervention Type de document : texte imprimé Auteurs : Esha MASSAND, Auteur ; Annette KARMILOFF-SMITH, Auteur Année de publication : 2015 Importance : p.275-288 Langues : Anglais (eng) Index. décimale : SCI-B SCI-B - Génétique Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=400 in The Genetics of Neurodevelopmental Disorders / Kevin J. MITCHELL Cascading Genetic and Environmental Effects on Development: Implications for Intervention [texte imprimé] / Esha MASSAND, Auteur ; Annette KARMILOFF-SMITH, Auteur . - 2015 . - p.275-288. Langues : Anglais (eng) Index. décimale : SCI-B SCI-B - Génétique Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=400

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ERP Correlates of Recognition Memory in Autism Spectrum Disorder / Esha MASSAND in Journal of Autism and Developmental Disorders, 43-9 (September 2013)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 43-9 (September 2013) . - p.2038-2047 Titre : ERP Correlates of Recognition Memory in Autism Spectrum Disorder Type de document : texte imprimé Auteurs : Esha MASSAND, Auteur ; Dermot M. BOWLER, Auteur ; Laurent MOTTRON, Auteur ; Anthony HOSEIN, Auteur ; Boutheina JEMEL, Auteur Article en page(s) : p.2038-2047 Langues : Anglais (eng) Mots-clés : Memory  Autism spectrum disorder  Event-related potential  Recognition  Old/new effect Index. décimale : PER Périodiques Résumé : Recognition memory in autism spectrum disorder (ASD) tends to be undiminished compared to that of typically developing (TD) individuals (Bowler et al. 2007), but it is still unknown whether memory in ASD relies on qualitatively similar or different neurophysiology. We sought to explore the neural activity underlying recognition by employing the old/new word repetition event-related potential effect. Behavioural recognition performance was comparable across both groups, and demonstrated superior recognition for low frequency over high frequency words. However, the ASD group showed a parietal rather than anterior onset (300–500 ms), and diminished right frontal old/new effects (800–1500 ms) relative to TD individuals. This study shows that undiminished recognition performance results from a pattern of differing functional neurophysiology in ASD. En ligne : http://dx.doi.org/10.1007/s10803-012-1755-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=212 [article] ERP Correlates of Recognition Memory in Autism Spectrum Disorder [texte imprimé] / Esha MASSAND, Auteur ; Dermot M. BOWLER, Auteur ; Laurent MOTTRON, Auteur ; Anthony HOSEIN, Auteur ; Boutheina JEMEL, Auteur . - p.2038-2047. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 43-9 (September 2013) . - p.2038-2047 Mots-clés : Memory  Autism spectrum disorder  Event-related potential  Recognition  Old/new effect Index. décimale : PER Périodiques Résumé : Recognition memory in autism spectrum disorder (ASD) tends to be undiminished compared to that of typically developing (TD) individuals (Bowler et al. 2007), but it is still unknown whether memory in ASD relies on qualitatively similar or different neurophysiology. We sought to explore the neural activity underlying recognition by employing the old/new word repetition event-related potential effect. Behavioural recognition performance was comparable across both groups, and demonstrated superior recognition for low frequency over high frequency words. However, the ASD group showed a parietal rather than anterior onset (300–500 ms), and diminished right frontal old/new effects (800–1500 ms) relative to TD individuals. This study shows that undiminished recognition performance results from a pattern of differing functional neurophysiology in ASD. En ligne : http://dx.doi.org/10.1007/s10803-012-1755-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=212

Health comorbidities and cognitive abilities across the lifespan in Down syndrome / Carla M. STARTIN in Journal of Neurodevelopmental Disorders, 12 (2020)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 12 (2020) Titre : Health comorbidities and cognitive abilities across the lifespan in Down syndrome Type de document : texte imprimé Auteurs : Carla M. STARTIN, Auteur ; Hana D'SOUZA, Auteur ; George BALL, Auteur ; Sarah HAMBURG, Auteur ; Rosalyn HITHERSAY, Auteur ; Kate M.O. HUGHES, Auteur ; Esha MASSAND, Auteur ; Annette KARMILOFF-SMITH, Auteur ; Michael S.C. THOMAS, Auteur ; LONDOWNS CONSORTIUM, Auteur ; Andre STRYDOM, Auteur Langues : Anglais (eng) Mots-clés : Adolescent  Adult  Aged  Aged, 80 and over  Child  Child, Preschool  Cognition  Comorbidity  Down Syndrome/epidemiology  Female  Humans  Infant  Language Development Disorders/epidemiology  Longevity  Male  Mental Disorders/epidemiology  Middle Aged  Sex Characteristics  United Kingdom/epidemiology  Young Adult  Cognitive outcomes  Down syndrome  Health comorbidities  Intellectual disability  Psychiatric comorbidities  Receptive language ability Index. décimale : PER Périodiques Résumé : BACKGROUND: Down syndrome (DS) is associated with variable intellectual disability and multiple health and psychiatric comorbidities. The impact of such comorbidities on cognitive outcomes is unknown. We aimed to describe patterns of physical health and psychiatric comorbidity prevalence, and receptive language ability, in DS across the lifespan, and determine relationships with cognitive outcomes. METHODS: Detailed medical histories were collected and cognitive abilities measured using standardised tests for 602 individuals with DS from England and Wales (age range 3 months to 73 years). Differences in prevalence rates between age groups and between males and females were determined using chi-squared or Fisher's exact tests. In adults, rates for psychiatric comorbidities were compared to expected population rates using standardised morbidity ratios (SMRs). Adapted ANCOVA functions were constructed to explore age and sex associations with receptive language ability across the lifespan, and regression analyses were performed to determine whether the presence of health comorbidities or physical phenotypes predicted cognitive abilities. RESULTS: Multiple comorbidities showed prevalence differences across the lifespan, though there were few sex differences. In adults, SMRs were increased in males and decreased in females with DS for schizophrenia, bipolar disorder, and anxiety. Further, SMRs were increased in both males and females with DS for dementia, autism, ADHD, and depression, with differences more pronounced in females for dementia and autism, and in males for depression. Across the lifespan, receptive language abilities increasingly deviated from age-typical levels, and males scored poorer than females. Only autism and epilepsy were associated with poorer cognitive ability in those aged 16-35 years, with no relationships for physical health comorbidities, including congenital heart defects. CONCLUSIONS: Our results indicate the prevalence of multiple comorbidities varies across the lifespan in DS, and in adults, rates for psychiatric comorbidities show different patterns for males and females relative to expected population rates. Further, most health comorbidities are not associated with poorer cognitive outcomes in DS, apart from autism and epilepsy. It is essential for clinicians to consider such differences to provide appropriate care and treatment for those with DS and to provide prognostic information relating to cognitive outcomes in those with comorbidities. En ligne : https://dx.doi.org/10.1186/s11689-019-9306-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=573 [article] Health comorbidities and cognitive abilities across the lifespan in Down syndrome [texte imprimé] / Carla M. STARTIN, Auteur ; Hana D'SOUZA, Auteur ; George BALL, Auteur ; Sarah HAMBURG, Auteur ; Rosalyn HITHERSAY, Auteur ; Kate M.O. HUGHES, Auteur ; Esha MASSAND, Auteur ; Annette KARMILOFF-SMITH, Auteur ; Michael S.C. THOMAS, Auteur ; LONDOWNS CONSORTIUM, Auteur ; Andre STRYDOM, Auteur. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 12 (2020) Mots-clés : Adolescent  Adult  Aged  Aged, 80 and over  Child  Child, Preschool  Cognition  Comorbidity  Down Syndrome/epidemiology  Female  Humans  Infant  Language Development Disorders/epidemiology  Longevity  Male  Mental Disorders/epidemiology  Middle Aged  Sex Characteristics  United Kingdom/epidemiology  Young Adult  Cognitive outcomes  Down syndrome  Health comorbidities  Intellectual disability  Psychiatric comorbidities  Receptive language ability Index. décimale : PER Périodiques Résumé : BACKGROUND: Down syndrome (DS) is associated with variable intellectual disability and multiple health and psychiatric comorbidities. The impact of such comorbidities on cognitive outcomes is unknown. We aimed to describe patterns of physical health and psychiatric comorbidity prevalence, and receptive language ability, in DS across the lifespan, and determine relationships with cognitive outcomes. METHODS: Detailed medical histories were collected and cognitive abilities measured using standardised tests for 602 individuals with DS from England and Wales (age range 3 months to 73 years). Differences in prevalence rates between age groups and between males and females were determined using chi-squared or Fisher's exact tests. In adults, rates for psychiatric comorbidities were compared to expected population rates using standardised morbidity ratios (SMRs). Adapted ANCOVA functions were constructed to explore age and sex associations with receptive language ability across the lifespan, and regression analyses were performed to determine whether the presence of health comorbidities or physical phenotypes predicted cognitive abilities. RESULTS: Multiple comorbidities showed prevalence differences across the lifespan, though there were few sex differences. In adults, SMRs were increased in males and decreased in females with DS for schizophrenia, bipolar disorder, and anxiety. Further, SMRs were increased in both males and females with DS for dementia, autism, ADHD, and depression, with differences more pronounced in females for dementia and autism, and in males for depression. Across the lifespan, receptive language abilities increasingly deviated from age-typical levels, and males scored poorer than females. Only autism and epilepsy were associated with poorer cognitive ability in those aged 16-35 years, with no relationships for physical health comorbidities, including congenital heart defects. CONCLUSIONS: Our results indicate the prevalence of multiple comorbidities varies across the lifespan in DS, and in adults, rates for psychiatric comorbidities show different patterns for males and females relative to expected population rates. Further, most health comorbidities are not associated with poorer cognitive outcomes in DS, apart from autism and epilepsy. It is essential for clinicians to consider such differences to provide appropriate care and treatment for those with DS and to provide prognostic information relating to cognitive outcomes in those with comorbidities. En ligne : https://dx.doi.org/10.1186/s11689-019-9306-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=573

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