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Visual Search in ASD: Instructed Versus Spontaneous Local and Global Processing / Ruth VAN DER HALLEN in Journal of Autism and Developmental Disorders, 46-9 (September 2016)
[article]
Titre : Visual Search in ASD: Instructed Versus Spontaneous Local and Global Processing Type de document : Texte imprimé et/ou numérique Auteurs : Ruth VAN DER HALLEN, Auteur ; Kris EVERS, Auteur ; Bart BOETS, Auteur ; Jean STEYAERT, Auteur ; Ilse NOENS, Auteur ; Johan WAGEMANS, Auteur Article en page(s) : p.3023-3036 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder (ASD) Visual search Local–global Interference Task instruction Gabor Index. décimale : PER Périodiques Résumé : Visual search has been used extensively to investigate differences in mid-level visual processing between individuals with ASD and TD individuals. The current study employed two visual search paradigms with Gaborized stimuli to assess the impact of task distractors (Experiment 1) and task instruction (Experiment 2) on local–global visual processing in ASD versus TD children. Experiment 1 revealed both groups to be equally sensitive to the absence or presence of a distractor, regardless of the type of target or type of distractor. Experiment 2 revealed a differential effect of task instruction for ASD compared to TD, regardless of the type of target. Taken together, these results stress the importance of task factors in the study of local–global visual processing in ASD. En ligne : http://dx.doi.org/10.1007/s10803-016-2826-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=292
in Journal of Autism and Developmental Disorders > 46-9 (September 2016) . - p.3023-3036[article] Visual Search in ASD: Instructed Versus Spontaneous Local and Global Processing [Texte imprimé et/ou numérique] / Ruth VAN DER HALLEN, Auteur ; Kris EVERS, Auteur ; Bart BOETS, Auteur ; Jean STEYAERT, Auteur ; Ilse NOENS, Auteur ; Johan WAGEMANS, Auteur . - p.3023-3036.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 46-9 (September 2016) . - p.3023-3036
Mots-clés : Autism spectrum disorder (ASD) Visual search Local–global Interference Task instruction Gabor Index. décimale : PER Périodiques Résumé : Visual search has been used extensively to investigate differences in mid-level visual processing between individuals with ASD and TD individuals. The current study employed two visual search paradigms with Gaborized stimuli to assess the impact of task distractors (Experiment 1) and task instruction (Experiment 2) on local–global visual processing in ASD versus TD children. Experiment 1 revealed both groups to be equally sensitive to the absence or presence of a distractor, regardless of the type of target or type of distractor. Experiment 2 revealed a differential effect of task instruction for ASD compared to TD, regardless of the type of target. Taken together, these results stress the importance of task factors in the study of local–global visual processing in ASD. En ligne : http://dx.doi.org/10.1007/s10803-016-2826-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=292 Hierarchical Letters in ASD: High Stimulus Variability Under Different Attentional Modes / Ruth VAN DER HALLEN in Journal of Autism and Developmental Disorders, 47-6 (June 2017)
[article]
Titre : Hierarchical Letters in ASD: High Stimulus Variability Under Different Attentional Modes Type de document : Texte imprimé et/ou numérique Auteurs : Ruth VAN DER HALLEN, Auteur ; Steven VANMARCKE, Auteur ; Ilse NOENS, Auteur ; Johan WAGEMANS, Auteur Article en page(s) : p.1854-1865 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder (ASD) Local–global Vision Hierarchical Navon Stimulus variability Index. décimale : PER Périodiques Résumé : Studies using hierarchical patterns to test global precedence and local–global interference in individuals with ASD have produced mixed results. The current study focused on stimulus variability and locational uncertainty, while using different attentional modes. Two groups of 44 children with and without ASD completed a divided attention task as well as a global and local selective attention task. The results revealed global-to-local and local-to-global interference in ASD, to the same extent as in the TD group. Both groups struggled with the same type of stimuli (i.e., ignoring the global level information) and performed similar in all three tasks. Future studies on (visual) information processing in ASD should pursue the impact of stimulus noise and trial-by-trial uncertainty further. En ligne : http://dx.doi.org/10.1007/s10803-017-3108-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=308
in Journal of Autism and Developmental Disorders > 47-6 (June 2017) . - p.1854-1865[article] Hierarchical Letters in ASD: High Stimulus Variability Under Different Attentional Modes [Texte imprimé et/ou numérique] / Ruth VAN DER HALLEN, Auteur ; Steven VANMARCKE, Auteur ; Ilse NOENS, Auteur ; Johan WAGEMANS, Auteur . - p.1854-1865.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 47-6 (June 2017) . - p.1854-1865
Mots-clés : Autism spectrum disorder (ASD) Local–global Vision Hierarchical Navon Stimulus variability Index. décimale : PER Périodiques Résumé : Studies using hierarchical patterns to test global precedence and local–global interference in individuals with ASD have produced mixed results. The current study focused on stimulus variability and locational uncertainty, while using different attentional modes. Two groups of 44 children with and without ASD completed a divided attention task as well as a global and local selective attention task. The results revealed global-to-local and local-to-global interference in ASD, to the same extent as in the TD group. Both groups struggled with the same type of stimuli (i.e., ignoring the global level information) and performed similar in all three tasks. Future studies on (visual) information processing in ASD should pursue the impact of stimulus noise and trial-by-trial uncertainty further. En ligne : http://dx.doi.org/10.1007/s10803-017-3108-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=308