Comparing Motor Skills in Autism Spectrum Individuals With and Without Speech Delay / Elise B. BARBEAU in Autism Research, 8-6 (December 2015)  

Public ISBD [article]  inAutism Research > 8-6 (December 2015) . - p.682-693 Titre : Comparing Motor Skills in Autism Spectrum Individuals With and Without Speech Delay Type de document : Texte imprimé et/ou numérique Auteurs : Elise B. BARBEAU, Auteur ; Andrée-Anne S. MEILLEUR, Auteur ; Thomas A. ZEFFIRO, Auteur ; Laurent MOTTRON, Auteur Article en page(s) : p.682-693 Langues : Anglais (eng) Mots-clés : autism spectrum  Asperger syndrome  motor skills  motor control  coordination  speech onset delay Index. décimale : PER Périodiques Résumé : Movement atypicalities in speed, coordination, posture, and gait have been observed across the autism spectrum (AS) and atypicalities in coordination are more commonly observed in AS individuals without delayed speech (DSM-IV Asperger) than in those with atypical or delayed speech onset. However, few studies have provided quantitative data to support these mostly clinical observations. Here, we compared perceptual and motor performance between 30 typically developing and AS individuals (21 with speech delay and 18 without speech delay) to examine the associations between limb movement control and atypical speech development. Groups were matched for age, intelligence, and sex. The experimental design included: an inspection time task, which measures visual processing speed; the Purdue Pegboard, which measures finger dexterity, bimanual performance, and hand-eye coordination; the Annett Peg Moving Task, which measures unimanual goal-directed arm movement; and a simple reaction time task. We used analysis of covariance to investigate group differences in task performance and linear regression models to explore potential associations between intelligence, language skills, simple reaction time, and visually guided movement performance. AS participants without speech delay performed slower than typical participants in the Purdue Pegboard subtests. AS participants without speech delay showed poorer bimanual coordination than those with speech delay. Visual processing speed was slightly faster in both AS groups than in the typical group. Altogether, these results suggest that AS individuals with and without speech delay differ in visually guided and visually triggered behavior and show that early language skills are associated with slower movement in simple and complex motor tasks. Autism Res 2015, 8: 682–693. © 2015 The Authors Autism Research published by Wiley Periodicals, Inc. on behalf of International Society for Autism Research En ligne : http://dx.doi.org/10.1002/aur.1483 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=278 [article] Comparing Motor Skills in Autism Spectrum Individuals With and Without Speech Delay [Texte imprimé et/ou numérique] / Elise B. BARBEAU, Auteur ; Andrée-Anne S. MEILLEUR, Auteur ; Thomas A. ZEFFIRO, Auteur ; Laurent MOTTRON, Auteur . - p.682-693. Langues : Anglais (eng) in Autism Research > 8-6 (December 2015) . - p.682-693 Mots-clés : autism spectrum  Asperger syndrome  motor skills  motor control  coordination  speech onset delay Index. décimale : PER Périodiques Résumé : Movement atypicalities in speed, coordination, posture, and gait have been observed across the autism spectrum (AS) and atypicalities in coordination are more commonly observed in AS individuals without delayed speech (DSM-IV Asperger) than in those with atypical or delayed speech onset. However, few studies have provided quantitative data to support these mostly clinical observations. Here, we compared perceptual and motor performance between 30 typically developing and AS individuals (21 with speech delay and 18 without speech delay) to examine the associations between limb movement control and atypical speech development. Groups were matched for age, intelligence, and sex. The experimental design included: an inspection time task, which measures visual processing speed; the Purdue Pegboard, which measures finger dexterity, bimanual performance, and hand-eye coordination; the Annett Peg Moving Task, which measures unimanual goal-directed arm movement; and a simple reaction time task. We used analysis of covariance to investigate group differences in task performance and linear regression models to explore potential associations between intelligence, language skills, simple reaction time, and visually guided movement performance. AS participants without speech delay performed slower than typical participants in the Purdue Pegboard subtests. AS participants without speech delay showed poorer bimanual coordination than those with speech delay. Visual processing speed was slightly faster in both AS groups than in the typical group. Altogether, these results suggest that AS individuals with and without speech delay differ in visually guided and visually triggered behavior and show that early language skills are associated with slower movement in simple and complex motor tasks. Autism Res 2015, 8: 682–693. © 2015 The Authors Autism Research published by Wiley Periodicals, Inc. on behalf of International Society for Autism Research En ligne : http://dx.doi.org/10.1002/aur.1483 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=278

Dysfonctions développementales et acquises du corps calleux / Elise B. BARBEAU

Public ISBD in Traité de neuropsychologie de l'enfant / Steve MAJERUS Titre : Dysfonctions développementales et acquises du corps calleux Type de document : Texte imprimé et/ou numérique Auteurs : Elise B. BARBEAU, Auteur ; Sophie BAYARD, Auteur ; Maryse LASSONDE, Auteur ; Laurent MOTTRON, Auteur Année de publication : 2020 Importance : p.326-338 Langues : Français (fre) Index. décimale : SCI-C SCI-C - Neuropsychologie Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=481 in Traité de neuropsychologie de l'enfant / Steve MAJERUS Dysfonctions développementales et acquises du corps calleux [Texte imprimé et/ou numérique] / Elise B. BARBEAU, Auteur ; Sophie BAYARD, Auteur ; Maryse LASSONDE, Auteur ; Laurent MOTTRON, Auteur . - 2020 . - p.326-338. Langues : Français (fre) Index. décimale : SCI-C SCI-C - Neuropsychologie Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=481

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Enhanced connectivity between visual cortex and other regions of the brain in autism: a REM sleep EEG coherence study / Cathy LEVEILLE in Autism Research, 3-5 (October 2010)  

Public ISBD [article]  inAutism Research > 3-5 (October 2010) . - p.280-285 Titre : Enhanced connectivity between visual cortex and other regions of the brain in autism: a REM sleep EEG coherence study Type de document : Texte imprimé et/ou numérique Auteurs : Cathy LEVEILLE, Auteur ; Elise B. BARBEAU, Auteur ; Christianne BOLDUC, Auteur ; Elyse LIMOGES, Auteur ; Claude BERTHIAUME, Auteur ; Elyse CHEVRIER, Auteur ; Laurent MOTTRON, Auteur ; Roger GODBOUT, Auteur Année de publication : 2010 Article en page(s) : p.280-285 Langues : Anglais (eng) Mots-clés : autism  occipital cortex  REM sleep EEG  EEG coherence  visual perception  neural coupling Index. décimale : PER Périodiques Résumé : Functional interregional neural coupling was measured as EEG coherence during REM sleep, a state of endogenous cortical activation, in 9 adult autistic individuals (21.1±4.0 years) and 13 typically developed controls (21.5±4.3 years) monitored for two consecutive nights in a sleep laboratory. Spectral analysis was performed on 60 s of artefact-free EEG samples distributed equally throughout the first four REM sleep periods of the second night. EEG coherence was calculated for six frequency bands (delta, theta, alpha, sigma, beta, and total spectrum) using a 22-electrode montage. The magnitude of coherence function was computed for intra- and interhemispheric pairs of recording sites. Results were compared by Multivariate Analysis of Variance (MANOVA). Each time the autistic group showed a greater EEG coherence than the controls; it involved intrahemispheric communication among the left visual cortex (O1) and other regions either close to or distant from the occipital cortex. In contrast, lower coherence values involved frontal electrodes in the right hemisphere. No significant differences between groups were found for interhemispheric EEG coherence. These results show that the analysis of EEG coherence during REM sleep can disclose patterns of cortical connectivity that can be reduced or increased in adults with autism compared to typically developed individuals, depending of the cortical areas studied. Superior coherence involving visual perceptual areas in autism is consistent with an enhanced role of perception in autistic brain organization. En ligne : http://dx.doi.org/10.1002/aur.155 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=115 [article] Enhanced connectivity between visual cortex and other regions of the brain in autism: a REM sleep EEG coherence study [Texte imprimé et/ou numérique] / Cathy LEVEILLE, Auteur ; Elise B. BARBEAU, Auteur ; Christianne BOLDUC, Auteur ; Elyse LIMOGES, Auteur ; Claude BERTHIAUME, Auteur ; Elyse CHEVRIER, Auteur ; Laurent MOTTRON, Auteur ; Roger GODBOUT, Auteur . - 2010 . - p.280-285. Langues : Anglais (eng) in Autism Research > 3-5 (October 2010) . - p.280-285 Mots-clés : autism  occipital cortex  REM sleep EEG  EEG coherence  visual perception  neural coupling Index. décimale : PER Périodiques Résumé : Functional interregional neural coupling was measured as EEG coherence during REM sleep, a state of endogenous cortical activation, in 9 adult autistic individuals (21.1±4.0 years) and 13 typically developed controls (21.5±4.3 years) monitored for two consecutive nights in a sleep laboratory. Spectral analysis was performed on 60 s of artefact-free EEG samples distributed equally throughout the first four REM sleep periods of the second night. EEG coherence was calculated for six frequency bands (delta, theta, alpha, sigma, beta, and total spectrum) using a 22-electrode montage. The magnitude of coherence function was computed for intra- and interhemispheric pairs of recording sites. Results were compared by Multivariate Analysis of Variance (MANOVA). Each time the autistic group showed a greater EEG coherence than the controls; it involved intrahemispheric communication among the left visual cortex (O1) and other regions either close to or distant from the occipital cortex. In contrast, lower coherence values involved frontal electrodes in the right hemisphere. No significant differences between groups were found for interhemispheric EEG coherence. These results show that the analysis of EEG coherence during REM sleep can disclose patterns of cortical connectivity that can be reduced or increased in adults with autism compared to typically developed individuals, depending of the cortical areas studied. Superior coherence involving visual perceptual areas in autism is consistent with an enhanced role of perception in autistic brain organization. En ligne : http://dx.doi.org/10.1002/aur.155 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=115

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