Performance of Children with Autism Spectrum Disorders on the Dimension-Change Card Sort Task / Gabriel S. DICHTER in Journal of Autism and Developmental Disorders, 40-4 (April 2010)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 40-4 (April 2010) . - p.448-456 Titre : Performance of Children with Autism Spectrum Disorders on the Dimension-Change Card Sort Task Type de document : texte imprimé Auteurs : Gabriel S. DICHTER, Auteur ; Kristen S.L. LAM, Auteur ; Lauren M. TURNER-BROWN, Auteur ; Tia N. HOLTZCLAW, Auteur ; Krestin J. RADONOVICH, Auteur ; James W. BODFISH, Auteur Année de publication : 2010 Article en page(s) : p.448-456 Langues : Anglais (eng) Mots-clés : Autism Set-shifting Dimension-change-card-sort-task Repetitive-behaviors Executive-functioning Children Index. décimale : PER Périodiques Résumé : Restricted and repetitive behaviors in autism spectrum disorders have been conceptualized to reflect impaired executive functions. In the present study, we investigated the performance of 6–17-year-old children with and without an autism spectrum disorder on a dimension-change card sort task that explicitly indicated sorting rules on every trial. Diagnostic groups did not differ in speed of responses after the first rule switch or in speed or accuracy on blocks with mixed versus single sort rules. However, performance of the ASD group was significantly slower and less accurate overall than the typically-developing group. Furthermore, within the ASD group, poorer DCCS task performance did not predict more severe autism symptoms. Implications for the executive dysfunction theory of autism are discussed. En ligne : http://dx.doi.org/10.1007/s10803-009-0886-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=992 [article] Performance of Children with Autism Spectrum Disorders on the Dimension-Change Card Sort Task [texte imprimé] / Gabriel S. DICHTER, Auteur ; Kristen S.L. LAM, Auteur ; Lauren M. TURNER-BROWN, Auteur ; Tia N. HOLTZCLAW, Auteur ; Krestin J. RADONOVICH, Auteur ; James W. BODFISH, Auteur . - 2010 . - p.448-456. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 40-4 (April 2010) . - p.448-456 Mots-clés : Autism Set-shifting Dimension-change-card-sort-task Repetitive-behaviors Executive-functioning Children Index. décimale : PER Périodiques Résumé : Restricted and repetitive behaviors in autism spectrum disorders have been conceptualized to reflect impaired executive functions. In the present study, we investigated the performance of 6–17-year-old children with and without an autism spectrum disorder on a dimension-change card sort task that explicitly indicated sorting rules on every trial. Diagnostic groups did not differ in speed of responses after the first rule switch or in speed or accuracy on blocks with mixed versus single sort rules. However, performance of the ASD group was significantly slower and less accurate overall than the typically-developing group. Furthermore, within the ASD group, poorer DCCS task performance did not predict more severe autism symptoms. Implications for the executive dysfunction theory of autism are discussed. En ligne : http://dx.doi.org/10.1007/s10803-009-0886-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=992

Vestibulo-ocular reflex function in children with high-functioning autism spectrum disorders / Tana B. CARSON in Autism Research, 10-2 (February 2017)  

Public ISBD [article]  inAutism Research > 10-2 (February 2017) . - p.251-266 Titre : Vestibulo-ocular reflex function in children with high-functioning autism spectrum disorders Type de document : texte imprimé Auteurs : Tana B. CARSON, Auteur ; Bradley J. WILKES, Auteur ; Kunal PATEL, Auteur ; Jill L. PINEDA, Auteur ; Ji H. KO, Auteur ; Karl M. NEWELL, Auteur ; James W. BODFISH, Auteur ; Michael C. SCHUBERT, Auteur ; Krestin J. RADONOVICH, Auteur ; Keith D. WHITE, Auteur ; Mark H. LEWIS, Auteur Article en page(s) : p.251-266 Langues : Anglais (eng) Mots-clés : autism spectrum disorders  vestibulo-ocular reflex  sensorimotor  cerebellum  dysrhythmia  oculomotor Index. décimale : PER Périodiques Résumé : Sensorimotor processing alterations are a growing focus in the assessment and treatment of Autism Spectrum Disorders (ASD). The rotational vestibulo-ocular reflex (rVOR), which functions to maintain stable vision during head movements, is a sensorimotor system that may be useful in understanding such alterations and their underlying neurobiology. In this study, we assessed post-rotary nystagmus elicited by continuous whole body rotation among children with high-functioning ASD and typically developing children. Children with ASD exhibited increased rVOR gain, the ratio of eye velocity to head velocity, indicating a possible lack of cerebellar inhibitory input to brainstem vestibular nuclei in this population. The ASD group also showed less regular or periodic horizontal eye movements as indexed by greater variance accounted for by multiple higher frequency bandwidths as well as greater entropy scores compared to typically developing children. The decreased regularity or dysrhythmia in the temporal structure of nystagmus beats in children with ASD may be due to alterations in cerebellum and brainstem circuitry. These findings could potentially serve as a model to better understand the functional effects of differences in these brain structures in ASD. En ligne : http://dx.doi.org/10.1002/aur.1642 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=303 [article] Vestibulo-ocular reflex function in children with high-functioning autism spectrum disorders [texte imprimé] / Tana B. CARSON, Auteur ; Bradley J. WILKES, Auteur ; Kunal PATEL, Auteur ; Jill L. PINEDA, Auteur ; Ji H. KO, Auteur ; Karl M. NEWELL, Auteur ; James W. BODFISH, Auteur ; Michael C. SCHUBERT, Auteur ; Krestin J. RADONOVICH, Auteur ; Keith D. WHITE, Auteur ; Mark H. LEWIS, Auteur . - p.251-266. Langues : Anglais (eng) in Autism Research > 10-2 (February 2017) . - p.251-266 Mots-clés : autism spectrum disorders  vestibulo-ocular reflex  sensorimotor  cerebellum  dysrhythmia  oculomotor Index. décimale : PER Périodiques Résumé : Sensorimotor processing alterations are a growing focus in the assessment and treatment of Autism Spectrum Disorders (ASD). The rotational vestibulo-ocular reflex (rVOR), which functions to maintain stable vision during head movements, is a sensorimotor system that may be useful in understanding such alterations and their underlying neurobiology. In this study, we assessed post-rotary nystagmus elicited by continuous whole body rotation among children with high-functioning ASD and typically developing children. Children with ASD exhibited increased rVOR gain, the ratio of eye velocity to head velocity, indicating a possible lack of cerebellar inhibitory input to brainstem vestibular nuclei in this population. The ASD group also showed less regular or periodic horizontal eye movements as indexed by greater variance accounted for by multiple higher frequency bandwidths as well as greater entropy scores compared to typically developing children. The decreased regularity or dysrhythmia in the temporal structure of nystagmus beats in children with ASD may be due to alterations in cerebellum and brainstem circuitry. These findings could potentially serve as a model to better understand the functional effects of differences in these brain structures in ASD. En ligne : http://dx.doi.org/10.1002/aur.1642 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=303

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