Brief Report: Eye-Movement Patterns During an Embedded Figures Test in Children with ASD / Brandon KEEHN in Journal of Autism and Developmental Disorders, 39-2 (February 2009)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 39-2 (February 2009) . - p.383-387 Titre : Brief Report: Eye-Movement Patterns During an Embedded Figures Test in Children with ASD Type de document : Texte imprimé et/ou numérique Auteurs : Brandon KEEHN, Auteur ; Alan J. LINCOLN, Auteur ; Laurie A. BRENNER, Auteur ; Ralph-Axel MULLER, Auteur ; Aurora I. RAMOS, Auteur ; Sandra P. MARSHALL, Auteur Année de publication : 2009 Article en page(s) : p.383-387 Langues : Anglais (eng) Mots-clés : Autism Reaction-time Visual-attention Visual-perception Eye-movement Eye-fixation Index. décimale : PER Périodiques Résumé : The present study examined fixation frequency and duration during an Embedded Figures Test (EFT) in an effort to better understand the attentional and perceptual processes by which individuals with autism spectrum disorder (ASD) achieve accelerated EFT performance. In particular, we aimed to elucidate differences in the patterns of eye-movement in ASD and typically developing (TD) children, thus providing evidence relevant to the competing theories of weak central coherence (WCC) and enhanced perceptual functioning. Consistent with prior EFT studies, we found accelerated response time (RT) in children with ASD. No group differences were seen for fixation frequency, but the ASD group made significantly shorter fixations compared to the TD group. Eye-movement results indicate that RT advantage in ASD is related to both WCC and enhanced perceptual functioning. En ligne : http://dx.doi.org/10.1007/s10803-008-0608-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=684 [article] Brief Report: Eye-Movement Patterns During an Embedded Figures Test in Children with ASD [Texte imprimé et/ou numérique] / Brandon KEEHN, Auteur ; Alan J. LINCOLN, Auteur ; Laurie A. BRENNER, Auteur ; Ralph-Axel MULLER, Auteur ; Aurora I. RAMOS, Auteur ; Sandra P. MARSHALL, Auteur . - 2009 . - p.383-387. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 39-2 (February 2009) . - p.383-387 Mots-clés : Autism Reaction-time Visual-attention Visual-perception Eye-movement Eye-fixation Index. décimale : PER Périodiques Résumé : The present study examined fixation frequency and duration during an Embedded Figures Test (EFT) in an effort to better understand the attentional and perceptual processes by which individuals with autism spectrum disorder (ASD) achieve accelerated EFT performance. In particular, we aimed to elucidate differences in the patterns of eye-movement in ASD and typically developing (TD) children, thus providing evidence relevant to the competing theories of weak central coherence (WCC) and enhanced perceptual functioning. Consistent with prior EFT studies, we found accelerated response time (RT) in children with ASD. No group differences were seen for fixation frequency, but the ASD group made significantly shorter fixations compared to the TD group. Eye-movement results indicate that RT advantage in ASD is related to both WCC and enhanced perceptual functioning. En ligne : http://dx.doi.org/10.1007/s10803-008-0608-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=684

Eye Movement and Visual Search: Are There Elementary Abnormalities in Autism? / Laurie A. BRENNER in Journal of Autism and Developmental Disorders, 37-7 (August 2007)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 37-7 (August 2007) . - p.1289-1309 Titre : Eye Movement and Visual Search: Are There Elementary Abnormalities in Autism? Type de document : Texte imprimé et/ou numérique Auteurs : Laurie A. BRENNER, Auteur ; Katherine C. TURNER, Auteur ; Ralph-Axel MULLER, Auteur Année de publication : 2007 Article en page(s) : p.1289-1309 Langues : Anglais (eng) Mots-clés : Autism Eye-movement Visual-search Joint-attention Language Index. décimale : PER Périodiques Résumé : Although atypical eye gaze is commonly observed in autism, little is known about underlying oculomotor abnormalities. Our review of visual search and oculomotor systems in the healthy brain suggests that relevant networks may be partially impaired in autism, given regional abnormalities known from neuroimaging. However, direct oculomotor evidence for autism remains limited. This gap is critical since oculomotor abnormalities might play a causal role in functions known to be impaired in autism, such as imitation and joint attention. We integrate our oculomotor review into a developmental approach to language impairment related to nonverbal prerequisites. Oculomotor abnormalities may play a role as a sensorimotor defect at the root of impairments in later developing functional systems, ultimately resulting in sociocommunicative deficits. En ligne : http://dx.doi.org/10.1007/s10803-006-0277-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=156 [article] Eye Movement and Visual Search: Are There Elementary Abnormalities in Autism? [Texte imprimé et/ou numérique] / Laurie A. BRENNER, Auteur ; Katherine C. TURNER, Auteur ; Ralph-Axel MULLER, Auteur . - 2007 . - p.1289-1309. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 37-7 (August 2007) . - p.1289-1309 Mots-clés : Autism Eye-movement Visual-search Joint-attention Language Index. décimale : PER Périodiques Résumé : Although atypical eye gaze is commonly observed in autism, little is known about underlying oculomotor abnormalities. Our review of visual search and oculomotor systems in the healthy brain suggests that relevant networks may be partially impaired in autism, given regional abnormalities known from neuroimaging. However, direct oculomotor evidence for autism remains limited. This gap is critical since oculomotor abnormalities might play a causal role in functions known to be impaired in autism, such as imitation and joint attention. We integrate our oculomotor review into a developmental approach to language impairment related to nonverbal prerequisites. Oculomotor abnormalities may play a role as a sensorimotor defect at the root of impairments in later developing functional systems, ultimately resulting in sociocommunicative deficits. En ligne : http://dx.doi.org/10.1007/s10803-006-0277-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=156

Time Reproduction Performance Is Associated With Age and Working Memory in High-Functioning Youth With Autism Spectrum Disorder / Laurie A. BRENNER in Autism Research, 8-1 (February 2015)  

Public ISBD [article]  inAutism Research > 8-1 (February 2015) . - p.29-37 Titre : Time Reproduction Performance Is Associated With Age and Working Memory in High-Functioning Youth With Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Laurie A. BRENNER, Auteur ; Vivian H. SHIH, Auteur ; Natalie L. COLICH, Auteur ; Catherine A. SUGAR, Auteur ; Carrie E. BEARDEN, Auteur ; Mirella DAPRETTO, Auteur Article en page(s) : p.29-37 Langues : Anglais (eng) Mots-clés : temporal processing  time estimation  inattention/hyperactivity Index. décimale : PER Périodiques Résumé : Impaired temporal processing has historically been viewed as a hallmark feature of attention deficit hyperactivity disorder. Recent evidence suggests temporal processing deficits may also be characteristic of autism spectrum disorder (ASD). However, little is known about the factors that impact temporal processing in children with ASD. The purpose of this study was to assess the effects of co-morbid attention problems, working memory (WM), age, and their interactions, on time reproduction in youth with and without ASD. Twenty-seven high-functioning individuals with ASD and 25 demographically comparable typically developing individuals (ages 9–17; 85% male) were assessed on measures of time reproduction, auditory WM, and inattention/hyperactivity. The time reproduction task required depression of a computer key to mimic interval durations of 4, 8, 12, 16, or 20?sec. Mixed effects regression analyses were used to model accuracy and variability of time reproduction as functions of diagnostic group, interval duration, age, WM, and inattention/hyperactivity. A significant group by age interaction was detected for accuracy, with the deficit in the ASD group being greater in younger children. There was a significant group by WM interaction for consistency, with the effects of poor WM on performance consistency being more pronounced in youth with ASD. All participants tended to underestimate longer interval durations and to be less consistent for shorter interval durations; these effects appeared more pronounced in those who were younger or who had poorer WM performance. Inattention/hyperactivity symptoms in the ASD group were not related to either accuracy or consistency. This study highlights the potential value of temporal processing as an intermediate trait of relevance to multiple neurodevelopmental disorders. Autism Res 2015, 8: 29–37. En ligne : http://dx.doi.org/10.1002/aur.1401 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=256 [article] Time Reproduction Performance Is Associated With Age and Working Memory in High-Functioning Youth With Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Laurie A. BRENNER, Auteur ; Vivian H. SHIH, Auteur ; Natalie L. COLICH, Auteur ; Catherine A. SUGAR, Auteur ; Carrie E. BEARDEN, Auteur ; Mirella DAPRETTO, Auteur . - p.29-37. Langues : Anglais (eng) in Autism Research > 8-1 (February 2015) . - p.29-37 Mots-clés : temporal processing  time estimation  inattention/hyperactivity Index. décimale : PER Périodiques Résumé : Impaired temporal processing has historically been viewed as a hallmark feature of attention deficit hyperactivity disorder. Recent evidence suggests temporal processing deficits may also be characteristic of autism spectrum disorder (ASD). However, little is known about the factors that impact temporal processing in children with ASD. The purpose of this study was to assess the effects of co-morbid attention problems, working memory (WM), age, and their interactions, on time reproduction in youth with and without ASD. Twenty-seven high-functioning individuals with ASD and 25 demographically comparable typically developing individuals (ages 9–17; 85% male) were assessed on measures of time reproduction, auditory WM, and inattention/hyperactivity. The time reproduction task required depression of a computer key to mimic interval durations of 4, 8, 12, 16, or 20?sec. Mixed effects regression analyses were used to model accuracy and variability of time reproduction as functions of diagnostic group, interval duration, age, WM, and inattention/hyperactivity. A significant group by age interaction was detected for accuracy, with the deficit in the ASD group being greater in younger children. There was a significant group by WM interaction for consistency, with the effects of poor WM on performance consistency being more pronounced in youth with ASD. All participants tended to underestimate longer interval durations and to be less consistent for shorter interval durations; these effects appeared more pronounced in those who were younger or who had poorer WM performance. Inattention/hyperactivity symptoms in the ASD group were not related to either accuracy or consistency. This study highlights the potential value of temporal processing as an intermediate trait of relevance to multiple neurodevelopmental disorders. Autism Res 2015, 8: 29–37. En ligne : http://dx.doi.org/10.1002/aur.1401 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=256

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