Global Motion Perception in Autism Spectrum Disorder: A Meta-Analysis / R. VAN DER HALLEN in Journal of Autism and Developmental Disorders, 49-12 (December 2019)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 49-12 (December 2019) . - p.4901-4918 Titre : Global Motion Perception in Autism Spectrum Disorder: A Meta-Analysis Type de document : Texte imprimé et/ou numérique Auteurs : R. VAN DER HALLEN, Auteur ; C. MANNING, Auteur ; K. EVERS, Auteur ; J. WAGEMANS, Auteur Article en page(s) : p.4901-4918 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder (ASD)  Biological motion  Coherent motion  Meta-analysis  Motion perception Index. décimale : PER Périodiques Résumé : Visual perception in individuals with autism spectrum disorder (ASD) is often debated in terms of enhanced local and impaired global perception. Deficits in global motion perception seem to support this characterization, although the evidence is inconsistent. We conducted a large meta-analysis on global motion, combining 48 articles on biological and coherent motion. Results provide evidence for a small global motion processing deficit in individuals with ASD compared to controls in both biological and coherent motion. This deficit appears to be present independent of the paradigm, task, dependent variable, age or IQ of the groups. Results indicate that individuals with ASD are less sensitive to these types of global motion, although the difference in neural mechanisms underlying this behavioral difference remains unclear. En ligne : http://dx.doi.org/10.1007/s10803-019-04194-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=411 [article] Global Motion Perception in Autism Spectrum Disorder: A Meta-Analysis [Texte imprimé et/ou numérique] / R. VAN DER HALLEN, Auteur ; C. MANNING, Auteur ; K. EVERS, Auteur ; J. WAGEMANS, Auteur . - p.4901-4918. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 49-12 (December 2019) . - p.4901-4918 Mots-clés : Autism spectrum disorder (ASD)  Biological motion  Coherent motion  Meta-analysis  Motion perception Index. décimale : PER Périodiques Résumé : Visual perception in individuals with autism spectrum disorder (ASD) is often debated in terms of enhanced local and impaired global perception. Deficits in global motion perception seem to support this characterization, although the evidence is inconsistent. We conducted a large meta-analysis on global motion, combining 48 articles on biological and coherent motion. Results provide evidence for a small global motion processing deficit in individuals with ASD compared to controls in both biological and coherent motion. This deficit appears to be present independent of the paradigm, task, dependent variable, age or IQ of the groups. Results indicate that individuals with ASD are less sensitive to these types of global motion, although the difference in neural mechanisms underlying this behavioral difference remains unclear. En ligne : http://dx.doi.org/10.1007/s10803-019-04194-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=411

Susceptibility to Ebbinghaus and Muller-Lyer illusions in autistic children: a comparison of three different methods / C. MANNING in Molecular Autism, 8 (2017)  

Public ISBD [article]  inMolecular Autism > 8 (2017) . - 16p. Titre : Susceptibility to Ebbinghaus and Muller-Lyer illusions in autistic children: a comparison of three different methods Type de document : Texte imprimé et/ou numérique Auteurs : C. MANNING, Auteur ; M. J. MORGAN, Auteur ; C. T. W. ALLEN, Auteur ; E. PELLICANO, Auteur Article en page(s) : 16p. Langues : Anglais (eng) Mots-clés : Adolescent  Autistic Disorder/*psychology  Child  Female  Humans  Male  Optical Illusions/*physiology  Pattern Recognition, Visual  Photic Stimulation/*methods  Size Perception  *Autism  *Cognitive bias  *Context  *Global processing  *Perception  *Response bias  *Vision  *Visual illusions Index. décimale : PER Périodiques Résumé : BACKGROUND: Studies reporting altered susceptibility to visual illusions in autistic individuals compared to that typically developing individuals have been taken to reflect differences in perception (e.g. reduced global processing), but could instead reflect differences in higher-level decision-making strategies. METHODS: We measured susceptibility to two contextual illusions (Ebbinghaus, Muller-Lyer) in autistic children aged 6-14 years and typically developing children matched in age and non-verbal ability using three methods. In experiment 1, we used a new two-alternative-forced-choice method with a roving pedestal designed to minimise cognitive biases. Here, children judged which of two comparison stimuli was most similar in size to a reference stimulus. In experiments 2 and 3, we used methods previously used with autistic populations. In experiment 2, children judged whether stimuli were the 'same' or 'different', and in experiment 3, we used a method-of-adjustment task. RESULTS: Across all tasks, autistic children were equally susceptible to the Ebbinghaus illusion as typically developing children. Autistic children showed a heightened susceptibility to the Muller-Lyer illusion, but only in the method-of-adjustment task. This result may reflect differences in decisional criteria. CONCLUSIONS: Our results are inconsistent with theories proposing reduced contextual integration in autism and suggest that previous reports of altered susceptibility to illusions may arise from differences in decision-making, rather than differences in perception per se. Our findings help to elucidate the underlying reasons for atypical responses to perceptual illusions in autism and call for the use of methods that reduce cognitive bias when measuring illusion susceptibility. En ligne : http://dx.doi.org/10.1186/s13229-017-0127-y Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=330 [article] Susceptibility to Ebbinghaus and Muller-Lyer illusions in autistic children: a comparison of three different methods [Texte imprimé et/ou numérique] / C. MANNING, Auteur ; M. J. MORGAN, Auteur ; C. T. W. ALLEN, Auteur ; E. PELLICANO, Auteur . - 16p. Langues : Anglais (eng) in Molecular Autism > 8 (2017) . - 16p. Mots-clés : Adolescent  Autistic Disorder/*psychology  Child  Female  Humans  Male  Optical Illusions/*physiology  Pattern Recognition, Visual  Photic Stimulation/*methods  Size Perception  *Autism  *Cognitive bias  *Context  *Global processing  *Perception  *Response bias  *Vision  *Visual illusions Index. décimale : PER Périodiques Résumé : BACKGROUND: Studies reporting altered susceptibility to visual illusions in autistic individuals compared to that typically developing individuals have been taken to reflect differences in perception (e.g. reduced global processing), but could instead reflect differences in higher-level decision-making strategies. METHODS: We measured susceptibility to two contextual illusions (Ebbinghaus, Muller-Lyer) in autistic children aged 6-14 years and typically developing children matched in age and non-verbal ability using three methods. In experiment 1, we used a new two-alternative-forced-choice method with a roving pedestal designed to minimise cognitive biases. Here, children judged which of two comparison stimuli was most similar in size to a reference stimulus. In experiments 2 and 3, we used methods previously used with autistic populations. In experiment 2, children judged whether stimuli were the 'same' or 'different', and in experiment 3, we used a method-of-adjustment task. RESULTS: Across all tasks, autistic children were equally susceptible to the Ebbinghaus illusion as typically developing children. Autistic children showed a heightened susceptibility to the Muller-Lyer illusion, but only in the method-of-adjustment task. This result may reflect differences in decisional criteria. CONCLUSIONS: Our results are inconsistent with theories proposing reduced contextual integration in autism and suggest that previous reports of altered susceptibility to illusions may arise from differences in decision-making, rather than differences in perception per se. Our findings help to elucidate the underlying reasons for atypical responses to perceptual illusions in autism and call for the use of methods that reduce cognitive bias when measuring illusion susceptibility. En ligne : http://dx.doi.org/10.1186/s13229-017-0127-y Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=330

Visual Motion Prediction and Verbal False Memory Performance in Autistic Children / F. G. TEWOLDE in Autism Research, 11-3 (March 2018)  

Public ISBD [article]  inAutism Research > 11-3 (March 2018) . - p.509-518 Titre : Visual Motion Prediction and Verbal False Memory Performance in Autistic Children Type de document : Texte imprimé et/ou numérique Auteurs : F. G. TEWOLDE, Auteur ; Dorothy V. M. BISHOP, Auteur ; C. MANNING, Auteur Article en page(s) : p.509-518 Langues : Anglais (eng) Mots-clés : autism  child development  memory  motion perception  neurodevelopmental disorders  visual perception Index. décimale : PER Périodiques Résumé : Recent theoretical accounts propose that atypical predictive processing can explain the diverse cognitive and behavioral features associated with autism, and that difficulties in making predictions may be related to reduced contextual processing. In this pre-registered study, 30 autistic children aged 6-14 years and 30 typically developing children matched in age and non-verbal IQ completed visual extrapolation and false memory tasks to assess predictive abilities and contextual processing, respectively. In the visual extrapolation tasks, children were asked to predict when an occluded car would reach the end of a road and when an occluded set of lights would fill up a grid. Autistic children made predictions that were just as precise as those made by typically developing children, across a range of occlusion durations. In the false memory task, autistic and typically developing children did not differ significantly in their discrimination between items presented in a list and semantically related, non-presented items, although the data were insensitive, suggesting the need for larger samples. Our findings help to refine theoretical accounts by challenging the notion that autism is caused by pervasively disordered prediction abilities. Further studies will be required to assess the relationship between predictive processing and context use in autism, and to establish the conditions under which predictive processing may be impaired. Autism Res 2018, 11: 509-518. (c) 2017 The Authors Autism Research published by International Society for Autism Research and Wiley Periodicals, Inc. LAY SUMMARY: It has been suggested that autistic individuals have difficulties making predictions and perceiving the overall gist of things. Yet, here we found that autistic children made similar predictions about hidden objects as non-autistic children. In a memory task, autistic children were slightly less confused about whether they had heard a word before, when words were closely related in meaning. We conclude that autistic children do not show difficulties with this type of prediction. En ligne : http://dx.doi.org/10.1002/aur.1915 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=352 [article] Visual Motion Prediction and Verbal False Memory Performance in Autistic Children [Texte imprimé et/ou numérique] / F. G. TEWOLDE, Auteur ; Dorothy V. M. BISHOP, Auteur ; C. MANNING, Auteur . - p.509-518. Langues : Anglais (eng) in Autism Research > 11-3 (March 2018) . - p.509-518 Mots-clés : autism  child development  memory  motion perception  neurodevelopmental disorders  visual perception Index. décimale : PER Périodiques Résumé : Recent theoretical accounts propose that atypical predictive processing can explain the diverse cognitive and behavioral features associated with autism, and that difficulties in making predictions may be related to reduced contextual processing. In this pre-registered study, 30 autistic children aged 6-14 years and 30 typically developing children matched in age and non-verbal IQ completed visual extrapolation and false memory tasks to assess predictive abilities and contextual processing, respectively. In the visual extrapolation tasks, children were asked to predict when an occluded car would reach the end of a road and when an occluded set of lights would fill up a grid. Autistic children made predictions that were just as precise as those made by typically developing children, across a range of occlusion durations. In the false memory task, autistic and typically developing children did not differ significantly in their discrimination between items presented in a list and semantically related, non-presented items, although the data were insensitive, suggesting the need for larger samples. Our findings help to refine theoretical accounts by challenging the notion that autism is caused by pervasively disordered prediction abilities. Further studies will be required to assess the relationship between predictive processing and context use in autism, and to establish the conditions under which predictive processing may be impaired. Autism Res 2018, 11: 509-518. (c) 2017 The Authors Autism Research published by International Society for Autism Research and Wiley Periodicals, Inc. LAY SUMMARY: It has been suggested that autistic individuals have difficulties making predictions and perceiving the overall gist of things. Yet, here we found that autistic children made similar predictions about hidden objects as non-autistic children. In a memory task, autistic children were slightly less confused about whether they had heard a word before, when words were closely related in meaning. We conclude that autistic children do not show difficulties with this type of prediction. En ligne : http://dx.doi.org/10.1002/aur.1915 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=352

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