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No evidence for a fundamental visual motion processing deficit in adolescents with autism spectrum disorders / Catherine R. G. JONES in Autism Research, 4-5 (October 2011)
[article]
Titre : No evidence for a fundamental visual motion processing deficit in adolescents with autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : Catherine R. G. JONES, Auteur ; John SWETTENHAM, Auteur ; Tony CHARMAN, Auteur ; Anita J.S. MARSDEN, Auteur ; Jenifer TREGAY, Auteur ; Gillian BAIRD, Auteur ; Emily SIMONOFF, Auteur ; Francesca HAPPE, Auteur Année de publication : 2011 Article en page(s) : p.347-357 Langues : Anglais (eng) Mots-clés : motion coherence form-from-motion biological motion point light display mentalizing theory of mind autism spectrum disorders Index. décimale : PER Périodiques Résumé : It has been suggested that atypicalities in low-level visual processing contribute to the expression and development of the unusual cognitive and behavioral profile seen in autism spectrum disorders (ASD). However, previous investigations have yielded mixed results. In the largest study of its kind (ASD n = 89; non-ASD = 52; mean age 15 years 6 months) and testing across the spectrum of IQ (range 52–133), we investigated performance on three measures of basic visual processing: motion coherence, form-from-motion and biological motion (BM). At the group level, we found no evidence of differences between the two groups on any of the tasks, suggesting that there is no fundamental visual motion processing deficit in individuals with an ASD, at least by adolescence. However, we identified a tail of individuals with ASD (18% of the sample) who had exceptionally poor BM processing abilities compared to the non-ASD group, and who were characterized by low IQ. For the entire sample of those both with and without ASD, performance on the BM task uniquely correlated with performance on the Frith–Happé animations, a higher-level task that demands the interpretation of moving, interacting agents in order to understand mental states. We hypothesize that this association reflects the shared social–cognitive characteristics of the two tasks, which have a common neural underpinning in the superior temporal sulcus. Autism Res2011,4:347–357. © 2011 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.209 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=145
in Autism Research > 4-5 (October 2011) . - p.347-357[article] No evidence for a fundamental visual motion processing deficit in adolescents with autism spectrum disorders [Texte imprimé et/ou numérique] / Catherine R. G. JONES, Auteur ; John SWETTENHAM, Auteur ; Tony CHARMAN, Auteur ; Anita J.S. MARSDEN, Auteur ; Jenifer TREGAY, Auteur ; Gillian BAIRD, Auteur ; Emily SIMONOFF, Auteur ; Francesca HAPPE, Auteur . - 2011 . - p.347-357.
Langues : Anglais (eng)
in Autism Research > 4-5 (October 2011) . - p.347-357
Mots-clés : motion coherence form-from-motion biological motion point light display mentalizing theory of mind autism spectrum disorders Index. décimale : PER Périodiques Résumé : It has been suggested that atypicalities in low-level visual processing contribute to the expression and development of the unusual cognitive and behavioral profile seen in autism spectrum disorders (ASD). However, previous investigations have yielded mixed results. In the largest study of its kind (ASD n = 89; non-ASD = 52; mean age 15 years 6 months) and testing across the spectrum of IQ (range 52–133), we investigated performance on three measures of basic visual processing: motion coherence, form-from-motion and biological motion (BM). At the group level, we found no evidence of differences between the two groups on any of the tasks, suggesting that there is no fundamental visual motion processing deficit in individuals with an ASD, at least by adolescence. However, we identified a tail of individuals with ASD (18% of the sample) who had exceptionally poor BM processing abilities compared to the non-ASD group, and who were characterized by low IQ. For the entire sample of those both with and without ASD, performance on the BM task uniquely correlated with performance on the Frith–Happé animations, a higher-level task that demands the interpretation of moving, interacting agents in order to understand mental states. We hypothesize that this association reflects the shared social–cognitive characteristics of the two tasks, which have a common neural underpinning in the superior temporal sulcus. Autism Res2011,4:347–357. © 2011 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.209 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=145 Processing Slow and Fast Motion in Children With Autism Spectrum Conditions / Catherine MANNING in Autism Research, 6-6 (December 2013)
[article]
Titre : Processing Slow and Fast Motion in Children With Autism Spectrum Conditions Type de document : Texte imprimé et/ou numérique Auteurs : Catherine MANNING, Auteur ; Tony CHARMAN, Auteur ; Elizabeth PELLICANO, Auteur Année de publication : 2013 Article en page(s) : p.531-541 Langues : Anglais (eng) Mots-clés : autism speed discrimination motion coherence visual motion processing Index. décimale : PER Périodiques Résumé : Consistent with the dorsal stream hypothesis, difficulties processing dynamic information have previously been reported in individuals with autism spectrum conditions (ASC). However, no research has systematically compared motion processing abilities for slow and fast speeds. Here, we measured speed discrimination thresholds and motion coherence thresholds in slow (1.5?deg/sec) and fast (6?deg/sec) speed conditions in children with an ASC aged 7 to 14 years, and age- and ability-matched typically developing children. Unexpectedly, children with ASC were as sensitive as typically developing children to differences in speed at both slow and fast reference speeds. Yet, elevated motion coherence thresholds were found in children with ASC, but in the slow stimulus speed condition only. Rather than having pervasive difficulties in motion processing, as predicted by the dorsal stream hypothesis, these results suggest that children with ASC have a selective difficulty in extracting coherent motion information specifically at slow speeds. Understanding the effects of stimulus parameters such as stimulus speed will be important for resolving discrepancies between previous studies examining motion coherence thresholds in ASC and also for refining theoretical models of altered autistic perception. En ligne : http://dx.doi.org/10.1002/aur.1309 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=221
in Autism Research > 6-6 (December 2013) . - p.531-541[article] Processing Slow and Fast Motion in Children With Autism Spectrum Conditions [Texte imprimé et/ou numérique] / Catherine MANNING, Auteur ; Tony CHARMAN, Auteur ; Elizabeth PELLICANO, Auteur . - 2013 . - p.531-541.
Langues : Anglais (eng)
in Autism Research > 6-6 (December 2013) . - p.531-541
Mots-clés : autism speed discrimination motion coherence visual motion processing Index. décimale : PER Périodiques Résumé : Consistent with the dorsal stream hypothesis, difficulties processing dynamic information have previously been reported in individuals with autism spectrum conditions (ASC). However, no research has systematically compared motion processing abilities for slow and fast speeds. Here, we measured speed discrimination thresholds and motion coherence thresholds in slow (1.5?deg/sec) and fast (6?deg/sec) speed conditions in children with an ASC aged 7 to 14 years, and age- and ability-matched typically developing children. Unexpectedly, children with ASC were as sensitive as typically developing children to differences in speed at both slow and fast reference speeds. Yet, elevated motion coherence thresholds were found in children with ASC, but in the slow stimulus speed condition only. Rather than having pervasive difficulties in motion processing, as predicted by the dorsal stream hypothesis, these results suggest that children with ASC have a selective difficulty in extracting coherent motion information specifically at slow speeds. Understanding the effects of stimulus parameters such as stimulus speed will be important for resolving discrepancies between previous studies examining motion coherence thresholds in ASC and also for refining theoretical models of altered autistic perception. En ligne : http://dx.doi.org/10.1002/aur.1309 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=221 Right Temporoparietal Gray Matter Predicts Accuracy of Social Perception in the Autism Spectrum / Nicole DAVID in Journal of Autism and Developmental Disorders, 44-6 (June 2014)
[article]
Titre : Right Temporoparietal Gray Matter Predicts Accuracy of Social Perception in the Autism Spectrum Type de document : Texte imprimé et/ou numérique Auteurs : Nicole DAVID, Auteur ; Johannes SCHULTZ, Auteur ; Elizabeth MILNE, Auteur ; Odette SCHUNKE, Auteur ; Daniel SCHOTTLE, Auteur ; Alexander MUNCHAU, Auteur ; Markus SIEGEL, Auteur ; Kai VOGELEY, Auteur ; Andreas K. ENGEL, Auteur Article en page(s) : p.1433-1446 Langues : Anglais (eng) Mots-clés : Autism Asperger syndrome Motion coherence Animacy Social perception Voxel-based morphometry Index. décimale : PER Périodiques Résumé : Individuals with an autism spectrum disorder (ASD) show hallmark deficits in social perception. These difficulties might also reflect fundamental deficits in integrating visual signals. We contrasted predictions of a social perception and a spatial–temporal integration deficit account. Participants with ASD and matched controls performed two tasks: the first required spatiotemporal integration of global motion signals without social meaning, the second required processing of socially relevant local motion. The ASD group only showed differences to controls in social motion evaluation. In addition, gray matter volume in the temporal–parietal junction correlated positively with accuracy in social motion perception in the ASD group. Our findings suggest that social–perceptual difficulties in ASD cannot be reduced to deficits in spatial–temporal integration. En ligne : http://dx.doi.org/10.1007/s10803-013-2008-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=233
in Journal of Autism and Developmental Disorders > 44-6 (June 2014) . - p.1433-1446[article] Right Temporoparietal Gray Matter Predicts Accuracy of Social Perception in the Autism Spectrum [Texte imprimé et/ou numérique] / Nicole DAVID, Auteur ; Johannes SCHULTZ, Auteur ; Elizabeth MILNE, Auteur ; Odette SCHUNKE, Auteur ; Daniel SCHOTTLE, Auteur ; Alexander MUNCHAU, Auteur ; Markus SIEGEL, Auteur ; Kai VOGELEY, Auteur ; Andreas K. ENGEL, Auteur . - p.1433-1446.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 44-6 (June 2014) . - p.1433-1446
Mots-clés : Autism Asperger syndrome Motion coherence Animacy Social perception Voxel-based morphometry Index. décimale : PER Périodiques Résumé : Individuals with an autism spectrum disorder (ASD) show hallmark deficits in social perception. These difficulties might also reflect fundamental deficits in integrating visual signals. We contrasted predictions of a social perception and a spatial–temporal integration deficit account. Participants with ASD and matched controls performed two tasks: the first required spatiotemporal integration of global motion signals without social meaning, the second required processing of socially relevant local motion. The ASD group only showed differences to controls in social motion evaluation. In addition, gray matter volume in the temporal–parietal junction correlated positively with accuracy in social motion perception in the ASD group. Our findings suggest that social–perceptual difficulties in ASD cannot be reduced to deficits in spatial–temporal integration. En ligne : http://dx.doi.org/10.1007/s10803-013-2008-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=233