Gist perception in adolescents with and without ASD: Ultra-rapid categorization of meaningful real-life scenes / Steven VANMARCKE in Research in Autism Spectrum Disorders, 29-30 (September–October 2016)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 29-30 (September–October 2016) . - p.30-47 Titre : Gist perception in adolescents with and without ASD: Ultra-rapid categorization of meaningful real-life scenes Type de document : Texte imprimé et/ou numérique Auteurs : Steven VANMARCKE, Auteur ; Lotte VAN ESCH, Auteur ; Ruth VAN DER HALLEN, Auteur ; Kris EVERS, Auteur ; Ilse NOENS, Auteur ; Jean STEYAERT, Auteur ; Johan WAGEMANS, Auteur Article en page(s) : p.30-47 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Vision research  Ultra-rapid categorization  Theory of mind  Reverse hierarchy theory  Developmental effects Index. décimale : PER Périodiques Résumé : Abstract Previous research has suggested the presence of a reduced preference to report and spontaneously interpret the global properties of a scene picture in adults with Autism Spectrum Disorder (ASD). Contrary to what is seen in typically developing (TD) participants, gist perception in ASD seems to occur mostly in a more explicit manner with focused attention. The current study used a set of non-social and social ultra-rapid categorization tasks to investigate gist perception in adolescents with and without ASD. When we instructed the participants to rapidly identify briefly presented object or scene information, we found that adolescents with ASD performed worse than TD participants. These findings complemented our previous study on ultra-rapid categorization in adults with or without ASD, in which no group-level differences in gist perception were observed. When categorization specifically entailed the fast processing of socially salient information, both adolescents and adults with ASD performed worse than TD participants. The combination of these results suggests an age-dependent improvement in general categorization ability but more long-lasting difficulties in rapid social categorization in individuals with ASD. We suggest that the poorer general performance of adolescents with ASD results from a less efficient rapid processing of global semantic structure. En ligne : http://dx.doi.org/10.1016/j.rasd.2016.05.007 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=292 [article] Gist perception in adolescents with and without ASD: Ultra-rapid categorization of meaningful real-life scenes [Texte imprimé et/ou numérique] / Steven VANMARCKE, Auteur ; Lotte VAN ESCH, Auteur ; Ruth VAN DER HALLEN, Auteur ; Kris EVERS, Auteur ; Ilse NOENS, Auteur ; Jean STEYAERT, Auteur ; Johan WAGEMANS, Auteur . - p.30-47. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 29-30 (September–October 2016) . - p.30-47 Mots-clés : Autism spectrum disorder  Vision research  Ultra-rapid categorization  Theory of mind  Reverse hierarchy theory  Developmental effects Index. décimale : PER Périodiques Résumé : Abstract Previous research has suggested the presence of a reduced preference to report and spontaneously interpret the global properties of a scene picture in adults with Autism Spectrum Disorder (ASD). Contrary to what is seen in typically developing (TD) participants, gist perception in ASD seems to occur mostly in a more explicit manner with focused attention. The current study used a set of non-social and social ultra-rapid categorization tasks to investigate gist perception in adolescents with and without ASD. When we instructed the participants to rapidly identify briefly presented object or scene information, we found that adolescents with ASD performed worse than TD participants. These findings complemented our previous study on ultra-rapid categorization in adults with or without ASD, in which no group-level differences in gist perception were observed. When categorization specifically entailed the fast processing of socially salient information, both adolescents and adults with ASD performed worse than TD participants. The combination of these results suggests an age-dependent improvement in general categorization ability but more long-lasting difficulties in rapid social categorization in individuals with ASD. We suggest that the poorer general performance of adolescents with ASD results from a less efficient rapid processing of global semantic structure. En ligne : http://dx.doi.org/10.1016/j.rasd.2016.05.007 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)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 47-6 (June 2017) . - p.1854-1865 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 [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

In the Eye of the Beholder: Rapid Visual Perception of Real-Life Scenes by Young Adults with and Without ASD / Steven VANMARCKE in Journal of Autism and Developmental Disorders, 46-8 (August 2016)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 46-8 (August 2016) . - p.2635-2652 Titre : In the Eye of the Beholder: Rapid Visual Perception of Real-Life Scenes by Young Adults with and Without ASD Type de document : Texte imprimé et/ou numérique Auteurs : Steven VANMARCKE, Auteur ; Caitlin MULLIN, Auteur ; Ruth VAN DER HALLEN, Auteur ; Kris EVERS, Auteur ; Ilse NOENS, Auteur ; Jean STEYAERT, Auteur ; Johan WAGEMANS, Auteur Article en page(s) : p.2635-2652 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Rapid visual perception  Local/global processing  Open-encoding  Semantic processing Index. décimale : PER Périodiques Résumé : Typically developing (TD) adults are able to extract global information from natural images and to categorize them within a single glance. This study aimed at extending these findings to individuals with autism spectrum disorder (ASD) using a free description open-encoding paradigm. Participants were asked to freely describe what they saw when looking at briefly presented real-life photographs. Our results show subtle but consistent group-level differences. More specifically, individuals with ASD spontaneously reported the presence of people in the display less frequently than TD participants, and they grasped the gist of the scene less well. These findings argue for a less efficient rapid feedforward processing of global semantic aspects and a less spontaneous interpretation of socially salient information in ASD. En ligne : http://dx.doi.org/10.1007/s10803-016-2802-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=290 [article] In the Eye of the Beholder: Rapid Visual Perception of Real-Life Scenes by Young Adults with and Without ASD [Texte imprimé et/ou numérique] / Steven VANMARCKE, Auteur ; Caitlin MULLIN, Auteur ; Ruth VAN DER HALLEN, Auteur ; Kris EVERS, Auteur ; Ilse NOENS, Auteur ; Jean STEYAERT, Auteur ; Johan WAGEMANS, Auteur . - p.2635-2652. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 46-8 (August 2016) . - p.2635-2652 Mots-clés : Autism spectrum disorder  Rapid visual perception  Local/global processing  Open-encoding  Semantic processing Index. décimale : PER Périodiques Résumé : Typically developing (TD) adults are able to extract global information from natural images and to categorize them within a single glance. This study aimed at extending these findings to individuals with autism spectrum disorder (ASD) using a free description open-encoding paradigm. Participants were asked to freely describe what they saw when looking at briefly presented real-life photographs. Our results show subtle but consistent group-level differences. More specifically, individuals with ASD spontaneously reported the presence of people in the display less frequently than TD participants, and they grasped the gist of the scene less well. These findings argue for a less efficient rapid feedforward processing of global semantic aspects and a less spontaneous interpretation of socially salient information in ASD. En ligne : http://dx.doi.org/10.1007/s10803-016-2802-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=290

Priming Facial Gender and Emotional Valence: The Influence of Spatial Frequency on Face Perception in ASD / Steven VANMARCKE in Journal of Autism and Developmental Disorders, 47-4 (April 2017)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 47-4 (April 2017) . - p.927-946 Titre : Priming Facial Gender and Emotional Valence: The Influence of Spatial Frequency on Face Perception in ASD Type de document : Texte imprimé et/ou numérique Auteurs : Steven VANMARCKE, Auteur ; Johan WAGEMANS, Auteur Article en page(s) : p.927-946 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Face perception  Vision research  Spatial frequency Index. décimale : PER Périodiques Résumé : Adolescents with and without autism spectrum disorder (ASD) performed two priming experiments in which they implicitly processed a prime stimulus, containing high and/or low spatial frequency information, and then explicitly categorized a target face either as male/female (gender task) or as positive/negative (Valence task). Adolescents with ASD made more categorization errors than typically developing adolescents. They also showed an age-dependent improvement in categorization speed and had more difficulties with categorizing facial expressions than gender. However, in neither of the categorization tasks, we found group differences in the processing of coarse versus fine prime information. This contradicted our expectations, and indicated that the perceptual differences between adolescents with and without ASD critically depended on the processing time available for the primes. En ligne : http://dx.doi.org/10.1007/s10803-016-3017-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=304 [article] Priming Facial Gender and Emotional Valence: The Influence of Spatial Frequency on Face Perception in ASD [Texte imprimé et/ou numérique] / Steven VANMARCKE, Auteur ; Johan WAGEMANS, Auteur . - p.927-946. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 47-4 (April 2017) . - p.927-946 Mots-clés : Autism spectrum disorder  Face perception  Vision research  Spatial frequency Index. décimale : PER Périodiques Résumé : Adolescents with and without autism spectrum disorder (ASD) performed two priming experiments in which they implicitly processed a prime stimulus, containing high and/or low spatial frequency information, and then explicitly categorized a target face either as male/female (gender task) or as positive/negative (Valence task). Adolescents with ASD made more categorization errors than typically developing adolescents. They also showed an age-dependent improvement in categorization speed and had more difficulties with categorizing facial expressions than gender. However, in neither of the categorization tasks, we found group differences in the processing of coarse versus fine prime information. This contradicted our expectations, and indicated that the perceptual differences between adolescents with and without ASD critically depended on the processing time available for the primes. En ligne : http://dx.doi.org/10.1007/s10803-016-3017-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=304

Spatial Frequency Priming of Scene Perception in Adolescents With and Without ASD / Steven VANMARCKE in Journal of Autism and Developmental Disorders, 47-7 (July 2017)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 47-7 (July 2017) . - p.2023-2038 Titre : Spatial Frequency Priming of Scene Perception in Adolescents With and Without ASD Type de document : Texte imprimé et/ou numérique Auteurs : Steven VANMARCKE, Auteur ; Ilse NOENS, Auteur ; Jean STEYAERT, Auteur ; Johan WAGEMANS, Auteur Article en page(s) : p.2023-2038 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders  Scene perception  Coarse-to-fine processing  Spatial frequency  Local–global information Index. décimale : PER Périodiques Résumé : While most typically developing (TD) participants have a coarse-to-fine processing style, people with autism spectrum disorder (ASD) seem to be less globally and more locally biased when processing visual information. The stimulus-specific spatial frequency content might be directly relevant to determine this temporal hierarchy of visual information processing in people with and without ASD. We implemented a semantic priming task in which (in)congruent coarse and/or fine spatial information preceded target categorization. Our results indicated that adolescents with ASD made more categorization errors than TD adolescents and needed more time to process the prime stimuli. Simultaneously, however, our findings argued for a processing advantage in ASD, when the prime stimulus contains detailed spatial information and presentation time permits explicit visual processing. En ligne : https://doi.org/10.1007/s10803-017-3123-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=313 [article] Spatial Frequency Priming of Scene Perception in Adolescents With and Without ASD [Texte imprimé et/ou numérique] / Steven VANMARCKE, Auteur ; Ilse NOENS, Auteur ; Jean STEYAERT, Auteur ; Johan WAGEMANS, Auteur . - p.2023-2038. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 47-7 (July 2017) . - p.2023-2038 Mots-clés : Autism spectrum disorders  Scene perception  Coarse-to-fine processing  Spatial frequency  Local–global information Index. décimale : PER Périodiques Résumé : While most typically developing (TD) participants have a coarse-to-fine processing style, people with autism spectrum disorder (ASD) seem to be less globally and more locally biased when processing visual information. The stimulus-specific spatial frequency content might be directly relevant to determine this temporal hierarchy of visual information processing in people with and without ASD. We implemented a semantic priming task in which (in)congruent coarse and/or fine spatial information preceded target categorization. Our results indicated that adolescents with ASD made more categorization errors than TD adolescents and needed more time to process the prime stimuli. Simultaneously, however, our findings argued for a processing advantage in ASD, when the prime stimulus contains detailed spatial information and presentation time permits explicit visual processing. En ligne : https://doi.org/10.1007/s10803-017-3123-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=313

Ultra-Rapid Categorization of Meaningful Real-Life Scenes in Adults With and Without ASD / Steven VANMARCKE in Journal of Autism and Developmental Disorders, 46-2 (February 2016)  

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