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Atypical Laterality of Resting Gamma Oscillations in Autism Spectrum Disorders / Christina R. MAXWELL in Journal of Autism and Developmental Disorders, 45-2 (February 2015)
[article]
Titre : Atypical Laterality of Resting Gamma Oscillations in Autism Spectrum Disorders Type de document : Texte imprimé et/ou numérique Auteurs : Christina R. MAXWELL, Auteur ; Michele E. VILLALOBOS, Auteur ; Robert T. SCHULTZ, Auteur ; Beate HERPERTZ-DAHLMANN, Auteur ; Kerstin KONRAD, Auteur ; Gregor KOHLS, Auteur Article en page(s) : p.292-297 Langues : Anglais (eng) Mots-clés : Autism Gamma EEG SRS Resting state Laterality Index. décimale : PER Périodiques Résumé : Abnormal brain oscillatory activity has been found in autism spectrum disorders (ASD) and proposed as a potential biomarker. While several studies have investigated gamma oscillations in ASD, none have examined resting gamma power across multiple brain regions. This study investigated resting gamma power using EEG in 15 boys with ASD and 18 age and intelligence quotient matched typically developing controls. We found a decrease in resting gamma power at right lateral electrodes in ASD. We further explored associations between gamma and ASD severity as measured by the Social Responsiveness Scale (SRS) and found a negative correlation between SRS and gamma power. We believe that our findings give further support of gamma oscillations as a potential biomarker for ASD. En ligne : http://dx.doi.org/10.1007/s10803-013-1842-7 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.292-297[article] Atypical Laterality of Resting Gamma Oscillations in Autism Spectrum Disorders [Texte imprimé et/ou numérique] / Christina R. MAXWELL, Auteur ; Michele E. VILLALOBOS, Auteur ; Robert T. SCHULTZ, Auteur ; Beate HERPERTZ-DAHLMANN, Auteur ; Kerstin KONRAD, Auteur ; Gregor KOHLS, Auteur . - p.292-297.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 45-2 (February 2015) . - p.292-297
Mots-clés : Autism Gamma EEG SRS Resting state Laterality Index. décimale : PER Périodiques Résumé : Abnormal brain oscillatory activity has been found in autism spectrum disorders (ASD) and proposed as a potential biomarker. While several studies have investigated gamma oscillations in ASD, none have examined resting gamma power across multiple brain regions. This study investigated resting gamma power using EEG in 15 boys with ASD and 18 age and intelligence quotient matched typically developing controls. We found a decrease in resting gamma power at right lateral electrodes in ASD. We further explored associations between gamma and ASD severity as measured by the Social Responsiveness Scale (SRS) and found a negative correlation between SRS and gamma power. We believe that our findings give further support of gamma oscillations as a potential biomarker for ASD. En ligne : http://dx.doi.org/10.1007/s10803-013-1842-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=258 Reading, Laterality, and the Brain: Early Contributions on Reading Disabilities by Sara S. Sparrow / Jack M. FLETCHER in Journal of Autism and Developmental Disorders, 44-2 (February 2014)
[article]
Titre : Reading, Laterality, and the Brain: Early Contributions on Reading Disabilities by Sara S. Sparrow Type de document : Texte imprimé et/ou numérique Auteurs : Jack M. FLETCHER, Auteur ; Robin D. MORRIS, Auteur Article en page(s) : p.250-255 Langues : Anglais (eng) Mots-clés : Reading disabilities Laterality Maturational lag Sara S. Sparrow Index. décimale : PER Périodiques Résumé : Although best known for work with children and adults with intellectual disabilities and autism spectrum disorders, training in speech pathology and a doctorate in clinical psychology and neuropsychology was the foundation for Sara Sparrow’s long-term interest in reading disabilities. Her first papers were on dyslexia and laterality, and the maturational lag theory of developmental dyslexia proposed with Paul Satz, her mentor. The research program that emerged from this work had a wide impact on early neuropsychological models of reading disabilities. Although Sara went on to research focused on children with other developmental disabilities after she moved to Yale University, this initial research influenced her career- long interests in assessment, developmental models of disabilities, and early screening methods. En ligne : http://dx.doi.org/10.1007/s10803-011-1273-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=223
in Journal of Autism and Developmental Disorders > 44-2 (February 2014) . - p.250-255[article] Reading, Laterality, and the Brain: Early Contributions on Reading Disabilities by Sara S. Sparrow [Texte imprimé et/ou numérique] / Jack M. FLETCHER, Auteur ; Robin D. MORRIS, Auteur . - p.250-255.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 44-2 (February 2014) . - p.250-255
Mots-clés : Reading disabilities Laterality Maturational lag Sara S. Sparrow Index. décimale : PER Périodiques Résumé : Although best known for work with children and adults with intellectual disabilities and autism spectrum disorders, training in speech pathology and a doctorate in clinical psychology and neuropsychology was the foundation for Sara Sparrow’s long-term interest in reading disabilities. Her first papers were on dyslexia and laterality, and the maturational lag theory of developmental dyslexia proposed with Paul Satz, her mentor. The research program that emerged from this work had a wide impact on early neuropsychological models of reading disabilities. Although Sara went on to research focused on children with other developmental disabilities after she moved to Yale University, this initial research influenced her career- long interests in assessment, developmental models of disabilities, and early screening methods. En ligne : http://dx.doi.org/10.1007/s10803-011-1273-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=223 Atypical Interference of Local Detail on Global Processing in High-functioning Autism and Asperger's Disorder / Nicole J. RINEHART in Journal of Child Psychology and Psychiatry, 41-6 (September 2000)
[article]
Titre : Atypical Interference of Local Detail on Global Processing in High-functioning Autism and Asperger's Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Nicole J. RINEHART, Auteur ; John L. BRADSHAW, Auteur ; Simon A. MOSS, Auteur ; Avril V. BRERETON, Auteur ; Bruce J. TONGE, Auteur Année de publication : 2000 Article en page(s) : p.769-778 Langues : Anglais (eng) Mots-clés : High-functioning autism Asperger's disorder local-global processing global dvantage local interference autistic disorder executive function laterality perception Index. décimale : PER Périodiques Résumé : This study explored the claim that individuals with autism and Asperger's disorder tend to process locally rather than holistically. Participants observed a large or “global” number composed of smaller or “local” numbers. The response was contingent upon the identification of either the large stimulus or the small stimuli. Relative to age, sex, and IQ matched controls, global processing in children and adolescents with autism (N= 12) and Asperger's disorder (N= 12) was more vulnerable when the local stimuli were incongruent. The autism group made more global errors than their matched control group, regardless of whether there was local incongruence. In contrast, the Asperger's disorder group made a similar number of global errors as their respective control group. These results were discussed in relation to an “absence of global precedence” notion, “weak central coherence” theory, and right-hemisphere dysfunction. The neurobiological significance of these findings were discussed in the context of a fronto-striatal model of dysfunction. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=125
in Journal of Child Psychology and Psychiatry > 41-6 (September 2000) . - p.769-778[article] Atypical Interference of Local Detail on Global Processing in High-functioning Autism and Asperger's Disorder [Texte imprimé et/ou numérique] / Nicole J. RINEHART, Auteur ; John L. BRADSHAW, Auteur ; Simon A. MOSS, Auteur ; Avril V. BRERETON, Auteur ; Bruce J. TONGE, Auteur . - 2000 . - p.769-778.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 41-6 (September 2000) . - p.769-778
Mots-clés : High-functioning autism Asperger's disorder local-global processing global dvantage local interference autistic disorder executive function laterality perception Index. décimale : PER Périodiques Résumé : This study explored the claim that individuals with autism and Asperger's disorder tend to process locally rather than holistically. Participants observed a large or “global” number composed of smaller or “local” numbers. The response was contingent upon the identification of either the large stimulus or the small stimuli. Relative to age, sex, and IQ matched controls, global processing in children and adolescents with autism (N= 12) and Asperger's disorder (N= 12) was more vulnerable when the local stimuli were incongruent. The autism group made more global errors than their matched control group, regardless of whether there was local incongruence. In contrast, the Asperger's disorder group made a similar number of global errors as their respective control group. These results were discussed in relation to an “absence of global precedence” notion, “weak central coherence” theory, and right-hemisphere dysfunction. The neurobiological significance of these findings were discussed in the context of a fronto-striatal model of dysfunction. Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=125 Early Lateralization of Gestures in Autism: Right-Handed Points Predict Expressive Language / Nevena DIMITROVA in Journal of Autism and Developmental Disorders, 50-4 (April 2020)
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Titre : Early Lateralization of Gestures in Autism: Right-Handed Points Predict Expressive Language Type de document : Texte imprimé et/ou numérique Auteurs : Nevena DIMITROVA, Auteur ; Christine MOHR, Auteur ; ?eyda ÖZÇALI?KAN, Auteur ; Lauren B. ADAMSON, Auteur Article en page(s) : p.1147-1158 Langues : Anglais (eng) Mots-clés : Autism Gesture Hand preference Language development Laterality Pointing Index. décimale : PER Périodiques Résumé : Children with autism spectrum disorder (ASD) produce fewer deictic gestures, accompanied by delays/deviations in speech development, compared to typically-developing (TD) children. We ask whether children with ASD-like TD children-show right-hand preference in gesturing and whether right-handed gestures predict their vocabulary size in speech. Our analysis of handedness in gesturing in children with ASD (n = 23, Mage = 30-months) and with TD (n = 23, Mage = 18-months) during mother-child play showed a right-hand preference for TD children-but not for children with ASD. Nonetheless, right-handed deictic gestures predicted expressive vocabulary 1 year later in both children with ASD and with TD. Handedness for gesture, both hand preference and amount of right-handed pointing, may be an important indicator of language development in autism and typical development. En ligne : http://dx.doi.org/10.1007/s10803-019-04347-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=421
in Journal of Autism and Developmental Disorders > 50-4 (April 2020) . - p.1147-1158[article] Early Lateralization of Gestures in Autism: Right-Handed Points Predict Expressive Language [Texte imprimé et/ou numérique] / Nevena DIMITROVA, Auteur ; Christine MOHR, Auteur ; ?eyda ÖZÇALI?KAN, Auteur ; Lauren B. ADAMSON, Auteur . - p.1147-1158.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 50-4 (April 2020) . - p.1147-1158
Mots-clés : Autism Gesture Hand preference Language development Laterality Pointing Index. décimale : PER Périodiques Résumé : Children with autism spectrum disorder (ASD) produce fewer deictic gestures, accompanied by delays/deviations in speech development, compared to typically-developing (TD) children. We ask whether children with ASD-like TD children-show right-hand preference in gesturing and whether right-handed gestures predict their vocabulary size in speech. Our analysis of handedness in gesturing in children with ASD (n = 23, Mage = 30-months) and with TD (n = 23, Mage = 18-months) during mother-child play showed a right-hand preference for TD children-but not for children with ASD. Nonetheless, right-handed deictic gestures predicted expressive vocabulary 1 year later in both children with ASD and with TD. Handedness for gesture, both hand preference and amount of right-handed pointing, may be an important indicator of language development in autism and typical development. En ligne : http://dx.doi.org/10.1007/s10803-019-04347-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=421 Left-Hemispheric Microstructural Abnormalities in Children With High-Functioning Autism Spectrum Disorder / Daniel PETERSON in Autism Research, 8-1 (February 2015)
[article]
Titre : Left-Hemispheric Microstructural Abnormalities in Children With High-Functioning Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Daniel PETERSON, Auteur ; Rajneesh MAHAJAN, Auteur ; Deana CROCETTI, Auteur ; Amanda MEJIA, Auteur ; Stewart MOSTOFSKY, Auteur Article en page(s) : p.61-72 Langues : Anglais (eng) Mots-clés : diffusion tensor imaging (DTI) neuroimaging laterality white matter Index. décimale : PER Périodiques Résumé : Current theories of the neurobiological basis of autism spectrum disorder (ASD) posit an altered pattern of connectivity in large-scale brain networks. Here we used diffusion tensor imaging to investigate the microstructural properties of the white matter (WM) that mediates interregional connectivity in 36 high-functioning children with ASD (HF-ASD) as compared with 37 controls. By employing an atlas-based analysis using large deformation diffeometric morphic mapping registration, a widespread but left-lateralized pattern of abnormalities was revealed. The mean diffusivity (MD) of water in the WM of HF-ASD children was significantly elevated throughout the left hemisphere, particularly in the outer-zone cortical WM. Across diagnostic groups, there was a significant effect of age on left-hemisphere MD, with a similar reduction in MD during childhood in both typically developing and HF-ASD children. The increased MD in children with HF-ASD suggests hypomyelination and may reflect increased short-range cortico-cortical connections subsequent to early WM overgrowth. These findings also highlight left-hemispheric connectivity as relevant to the pathophysiology of ASD and indicate that the spatial distribution of microstructural abnormalities in HF-ASD is widespread and left-lateralized. This altered left-hemispheric connectivity may contribute to deficits in communication and praxis observed in ASD. Autism Res 2015, 8: 61–72. En ligne : http://dx.doi.org/10.1002/aur.1413 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=256
in Autism Research > 8-1 (February 2015) . - p.61-72[article] Left-Hemispheric Microstructural Abnormalities in Children With High-Functioning Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Daniel PETERSON, Auteur ; Rajneesh MAHAJAN, Auteur ; Deana CROCETTI, Auteur ; Amanda MEJIA, Auteur ; Stewart MOSTOFSKY, Auteur . - p.61-72.
Langues : Anglais (eng)
in Autism Research > 8-1 (February 2015) . - p.61-72
Mots-clés : diffusion tensor imaging (DTI) neuroimaging laterality white matter Index. décimale : PER Périodiques Résumé : Current theories of the neurobiological basis of autism spectrum disorder (ASD) posit an altered pattern of connectivity in large-scale brain networks. Here we used diffusion tensor imaging to investigate the microstructural properties of the white matter (WM) that mediates interregional connectivity in 36 high-functioning children with ASD (HF-ASD) as compared with 37 controls. By employing an atlas-based analysis using large deformation diffeometric morphic mapping registration, a widespread but left-lateralized pattern of abnormalities was revealed. The mean diffusivity (MD) of water in the WM of HF-ASD children was significantly elevated throughout the left hemisphere, particularly in the outer-zone cortical WM. Across diagnostic groups, there was a significant effect of age on left-hemisphere MD, with a similar reduction in MD during childhood in both typically developing and HF-ASD children. The increased MD in children with HF-ASD suggests hypomyelination and may reflect increased short-range cortico-cortical connections subsequent to early WM overgrowth. These findings also highlight left-hemispheric connectivity as relevant to the pathophysiology of ASD and indicate that the spatial distribution of microstructural abnormalities in HF-ASD is widespread and left-lateralized. This altered left-hemispheric connectivity may contribute to deficits in communication and praxis observed in ASD. Autism Res 2015, 8: 61–72. En ligne : http://dx.doi.org/10.1002/aur.1413 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=256 There Are Indeed More Left-Handers Within the Autism Spectrum Disorder Compared with in the General Population, but the Many Mixed-Handers Is the More Interesting Finding / A. L. RYSSTAD in Journal of Autism and Developmental Disorders, 48-9 (September 2018)
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