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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 Visual Search and Emotion: How Children with Autism Spectrum Disorders Scan Emotional Scenes / Lisa MACCARI in Journal of Autism and Developmental Disorders, 44-11 (November 2014)
[article]
Titre : Visual Search and Emotion: How Children with Autism Spectrum Disorders Scan Emotional Scenes Type de document : Texte imprimé et/ou numérique Auteurs : Lisa MACCARI, Auteur ; Augusto PASINI, Auteur ; Emanuela CAROLI, Auteur ; Caterina ROSA, Auteur ; Andrea MAROTTA, Auteur ; Diana MARTELLA, Auteur ; LuisJ FUENTES, Auteur ; Maria CASAGRANDE, Auteur Article en page(s) : p.2871-2881 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders Change detection Change blindness Flicker task Visual search Emotional processing Index. décimale : PER Périodiques Résumé : This study assessed visual search abilities, tested through the flicker task, in children diagnosed with autism spectrum disorders (ASDs). Twenty-two children diagnosed with ASD and 22 matched typically developing (TD) children were told to detect changes in objects of central interest or objects of marginal interest (MI) embedded in either emotion-laden (positive or negative) or neutral real-world pictures. The results showed that emotion-laden pictures equally interfered with performance of both ASD and TD children, slowing down reaction times compared with neutral pictures. Children with ASD were faster than TD children, particularly in detecting changes in MI objects, the most difficult condition. However, their performance was less accurate than performance of TD children just when the pictures were negative. These findings suggest that children with ASD have better visual search abilities than TD children only when the search is particularly difficult and requires strong serial search strategies. The emotional–social impairment that is usually considered as a typical feature of ASD seems to be limited to processing of negative emotional information. En ligne : http://dx.doi.org/10.1007/s10803-014-2148-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=241
in Journal of Autism and Developmental Disorders > 44-11 (November 2014) . - p.2871-2881[article] Visual Search and Emotion: How Children with Autism Spectrum Disorders Scan Emotional Scenes [Texte imprimé et/ou numérique] / Lisa MACCARI, Auteur ; Augusto PASINI, Auteur ; Emanuela CAROLI, Auteur ; Caterina ROSA, Auteur ; Andrea MAROTTA, Auteur ; Diana MARTELLA, Auteur ; LuisJ FUENTES, Auteur ; Maria CASAGRANDE, Auteur . - p.2871-2881.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 44-11 (November 2014) . - p.2871-2881
Mots-clés : Autism spectrum disorders Change detection Change blindness Flicker task Visual search Emotional processing Index. décimale : PER Périodiques Résumé : This study assessed visual search abilities, tested through the flicker task, in children diagnosed with autism spectrum disorders (ASDs). Twenty-two children diagnosed with ASD and 22 matched typically developing (TD) children were told to detect changes in objects of central interest or objects of marginal interest (MI) embedded in either emotion-laden (positive or negative) or neutral real-world pictures. The results showed that emotion-laden pictures equally interfered with performance of both ASD and TD children, slowing down reaction times compared with neutral pictures. Children with ASD were faster than TD children, particularly in detecting changes in MI objects, the most difficult condition. However, their performance was less accurate than performance of TD children just when the pictures were negative. These findings suggest that children with ASD have better visual search abilities than TD children only when the search is particularly difficult and requires strong serial search strategies. The emotional–social impairment that is usually considered as a typical feature of ASD seems to be limited to processing of negative emotional information. En ligne : http://dx.doi.org/10.1007/s10803-014-2148-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=241 Visual search strategies during facial recognition in children with ASD / Matthew A. ALBRECHT in Research in Autism Spectrum Disorders, 8-5 (May 2014)
[article]
Titre : Visual search strategies during facial recognition in children with ASD Type de document : Texte imprimé et/ou numérique Auteurs : Matthew A. ALBRECHT, Auteur ; Jonathan K. FOSTER, Auteur ; Annette V. JOOSTEN, Auteur ; Marita FALKMER, Auteur ; Julia S. Y. TANG, Auteur ; Denise LEUNG, Auteur ; Anna ORDQVIST, Auteur ; Torbjörn FALKMER, Auteur Article en page(s) : p.559-569 Mots-clés : Face recognition Eye-tracking Developmental Visual search Index. décimale : PER Périodiques Résumé : Facial recognition is a complex skill necessary for successful human interpersonal and social interactions. Given that the most prevalent disorder of social interaction is autism spectrum disorder (ASD), a number of studies have investigated and found impaired facial recognition abilities in people with ASD. Further, this impairment may be critically involved in mediating the deficits in interpersonal and social interactions in people with ASD. We sought to address the question of whether face processing is impaired in children with ASD in the current study. While there were a number of differences in visual search behaviours between the 19 children with ASD and the 15 controls, this did not manifest in deficits in facial recognition accuracy. In addition, there were notable differences with respect to eye fixation behaviours and recognition accuracy in this study compared to the findings in a previous similar study conducted in adults with ASD. These differences suggest a performance enhancing developmental trajectory in facial processing in controls that may not be present in individuals with ASD. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.01.014 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=229
in Research in Autism Spectrum Disorders > 8-5 (May 2014) . - p.559-569[article] Visual search strategies during facial recognition in children with ASD [Texte imprimé et/ou numérique] / Matthew A. ALBRECHT, Auteur ; Jonathan K. FOSTER, Auteur ; Annette V. JOOSTEN, Auteur ; Marita FALKMER, Auteur ; Julia S. Y. TANG, Auteur ; Denise LEUNG, Auteur ; Anna ORDQVIST, Auteur ; Torbjörn FALKMER, Auteur . - p.559-569.
in Research in Autism Spectrum Disorders > 8-5 (May 2014) . - p.559-569
Mots-clés : Face recognition Eye-tracking Developmental Visual search Index. décimale : PER Périodiques Résumé : Facial recognition is a complex skill necessary for successful human interpersonal and social interactions. Given that the most prevalent disorder of social interaction is autism spectrum disorder (ASD), a number of studies have investigated and found impaired facial recognition abilities in people with ASD. Further, this impairment may be critically involved in mediating the deficits in interpersonal and social interactions in people with ASD. We sought to address the question of whether face processing is impaired in children with ASD in the current study. While there were a number of differences in visual search behaviours between the 19 children with ASD and the 15 controls, this did not manifest in deficits in facial recognition accuracy. In addition, there were notable differences with respect to eye fixation behaviours and recognition accuracy in this study compared to the findings in a previous similar study conducted in adults with ASD. These differences suggest a performance enhancing developmental trajectory in facial processing in controls that may not be present in individuals with ASD. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.01.014 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=229 Visual search strategies of children with and without autism spectrum disorders during an embedded figures task / Chiara HORLIN in Research in Autism Spectrum Disorders, 8-5 (May 2014)
[article]
Titre : Visual search strategies of children with and without autism spectrum disorders during an embedded figures task Type de document : Texte imprimé et/ou numérique Auteurs : Chiara HORLIN, Auteur ; Matthew A. ALBRECHT, Auteur ; Marita FALKMER, Auteur ; Denise LEUNG, Auteur ; Anna ORDQVIST, Auteur ; Tele TAN, Auteur ; Wee Lih LEE, Auteur ; Torbjörn FALKMER, Auteur Article en page(s) : p.463-471 Mots-clés : ASD Eye tracking Embedded figures test Visual search Index. décimale : PER Périodiques Résumé : Individuals with ASD often demonstrate superior performance on embedded figures tasks (EFTs). We investigated visual scanning behaviour in children with ASD during an EFT in an attempt replicating a previous study examining differences in visual search behaviour. Twenty-three children with, and 31 children without an ASD were shown 16 items from the Figure-Ground subtest of the TVPS-3 while wearing an eye tracker. Children with ASD exhibited fewer fixations, and less time per fixation, on the target figure. Accuracy was similar between the two groups. There were no other noteworthy differences between children with and without ASD. Differences in visual scanning patterns in the presence of typical behavioural performance suggest that any purported differences in processing style may not be detrimental to cognitive performance and further refinement of the current methodology may lead to support for a purported advantageous cognitive style. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.01.006 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=229
in Research in Autism Spectrum Disorders > 8-5 (May 2014) . - p.463-471[article] Visual search strategies of children with and without autism spectrum disorders during an embedded figures task [Texte imprimé et/ou numérique] / Chiara HORLIN, Auteur ; Matthew A. ALBRECHT, Auteur ; Marita FALKMER, Auteur ; Denise LEUNG, Auteur ; Anna ORDQVIST, Auteur ; Tele TAN, Auteur ; Wee Lih LEE, Auteur ; Torbjörn FALKMER, Auteur . - p.463-471.
in Research in Autism Spectrum Disorders > 8-5 (May 2014) . - p.463-471
Mots-clés : ASD Eye tracking Embedded figures test Visual search Index. décimale : PER Périodiques Résumé : Individuals with ASD often demonstrate superior performance on embedded figures tasks (EFTs). We investigated visual scanning behaviour in children with ASD during an EFT in an attempt replicating a previous study examining differences in visual search behaviour. Twenty-three children with, and 31 children without an ASD were shown 16 items from the Figure-Ground subtest of the TVPS-3 while wearing an eye tracker. Children with ASD exhibited fewer fixations, and less time per fixation, on the target figure. Accuracy was similar between the two groups. There were no other noteworthy differences between children with and without ASD. Differences in visual scanning patterns in the presence of typical behavioural performance suggest that any purported differences in processing style may not be detrimental to cognitive performance and further refinement of the current methodology may lead to support for a purported advantageous cognitive style. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.01.006 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=229 Visual Search Targeting Either Local or Global Perceptual Processes Differs as a Function of Autistic-Like Traits in the Typically Developing Population / Renita A. ALMEIDA in Journal of Autism and Developmental Disorders, 43-6 (June 2013)
[article]
Titre : Visual Search Targeting Either Local or Global Perceptual Processes Differs as a Function of Autistic-Like Traits in the Typically Developing Population Type de document : Texte imprimé et/ou numérique Auteurs : Renita A. ALMEIDA, Auteur ; J. Edwin DICKINSON, Auteur ; Murray T. MAYBERY, Auteur ; Johanna C. BADCOCK, Auteur ; David R. BADCOCK, Auteur Article en page(s) : p.1272-1286 Langues : Anglais (eng) Mots-clés : Autism-Spectrum Quotient Visual search Embedded Figures Test Radial frequency patterns Visual processing Index. décimale : PER Périodiques Résumé : Relative to low scorers, high scorers on the Autism-Spectrum Quotient (AQ) show enhanced performance on the Embedded Figures Test and the Radial Frequency search task (RFST), which has been attributed to both enhanced local processing and differences in combining global percepts. We investigate the role of local and global processing further using the RFST in four experiments. High AQ adults maintained a consistent advantage in search speed across diverse target-distracter stimulus conditions. This advantage may reflect enhanced local processing of curvature in early stages of the form vision pathway and superior global detection of shape primitives. However, more probable is the presence of a superior search process that enables a consistent search advantage at both levels of processing. En ligne : http://dx.doi.org/10.1007/s10803-012-1669-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=201
in Journal of Autism and Developmental Disorders > 43-6 (June 2013) . - p.1272-1286[article] Visual Search Targeting Either Local or Global Perceptual Processes Differs as a Function of Autistic-Like Traits in the Typically Developing Population [Texte imprimé et/ou numérique] / Renita A. ALMEIDA, Auteur ; J. Edwin DICKINSON, Auteur ; Murray T. MAYBERY, Auteur ; Johanna C. BADCOCK, Auteur ; David R. BADCOCK, Auteur . - p.1272-1286.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 43-6 (June 2013) . - p.1272-1286
Mots-clés : Autism-Spectrum Quotient Visual search Embedded Figures Test Radial frequency patterns Visual processing Index. décimale : PER Périodiques Résumé : Relative to low scorers, high scorers on the Autism-Spectrum Quotient (AQ) show enhanced performance on the Embedded Figures Test and the Radial Frequency search task (RFST), which has been attributed to both enhanced local processing and differences in combining global percepts. We investigate the role of local and global processing further using the RFST in four experiments. High AQ adults maintained a consistent advantage in search speed across diverse target-distracter stimulus conditions. This advantage may reflect enhanced local processing of curvature in early stages of the form vision pathway and superior global detection of shape primitives. However, more probable is the presence of a superior search process that enables a consistent search advantage at both levels of processing. En ligne : http://dx.doi.org/10.1007/s10803-012-1669-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=201 Age-Related Changes in Conjunctive Visual Search in Children with and without ASD / Grace IAROCCI in Autism Research, 7-2 (April 2014)
PermalinkIs There a Limit to the Superiority of Individuals with ASD in Visual Search? / Roy S. HESSELS in Journal of Autism and Developmental Disorders, 44-2 (February 2014)
PermalinkA Magnetic Resonance Spectroscopy Study of Superior Visual Search Abilities in Children with Autism Spectrum Disorder / David A. EDMONDSON in Autism Research, 13-4 (April 2020)
PermalinkNot So Fast: Autistic traits and Anxious Apprehension in Real-World Visual Search Scenarios / N. C. C. RUSSELL in Journal of Autism and Developmental Disorders, 49-5 (May 2019)
PermalinkPractice Makes Improvement: How Adults with Autism Out-Perform Others in a Naturalistic Visual Search Task / Cleotilde GONZALEZ in Journal of Autism and Developmental Disorders, 43-10 (October 2013)
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