Color Afterimages in Autistic Adults / John MAULE in Journal of Autism and Developmental Disorders, 48-4 (April 2018)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 48-4 (April 2018) . - p.1409-1421 Titre : Color Afterimages in Autistic Adults Type de document : texte imprimé Auteurs : John MAULE, Auteur ; Kirstie STANWORTH, Auteur ; Elizabeth PELLICANO, Auteur ; Anna FRANKLIN, Auteur Article en page(s) : p.1409-1421 Langues : Anglais (eng) Mots-clés : Adaptation  Afterimages  Autism  Color  Top-down knowledge Index. décimale : PER Périodiques Résumé : It has been suggested that attenuated adaptation to visual stimuli in autism is the result of atypical perceptual priors (e.g., Pellicano and Burr in Trends Cogn Sci 16(10):504-510, 2012. doi: 10.1016/j.tics.2012.08.009 ). This study investigated adaptation to color in autistic adults, measuring both strength of afterimage and the influence of top-down knowledge. We found no difference in color afterimage strength between autistic and typical adults. Effects of top-down knowledge on afterimage intensity shown by Lupyan (Acta Psychol 161:117-130, 2015. doi: 10.1016/j.actpsy.2015.08.006 ) were not replicated for either group. This study finds intact color adaptation in autistic adults. This is in contrast to findings of attenuated adaptation to faces and numerosity in autistic children. Future research should investigate the possibility of developmental differences in adaptation and further examine top-down effects on adaptation. En ligne : http://dx.doi.org/10.1007/s10803-016-2786-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=352 [article] Color Afterimages in Autistic Adults [texte imprimé] / John MAULE, Auteur ; Kirstie STANWORTH, Auteur ; Elizabeth PELLICANO, Auteur ; Anna FRANKLIN, Auteur . - p.1409-1421. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 48-4 (April 2018) . - p.1409-1421 Mots-clés : Adaptation  Afterimages  Autism  Color  Top-down knowledge Index. décimale : PER Périodiques Résumé : It has been suggested that attenuated adaptation to visual stimuli in autism is the result of atypical perceptual priors (e.g., Pellicano and Burr in Trends Cogn Sci 16(10):504-510, 2012. doi: 10.1016/j.tics.2012.08.009 ). This study investigated adaptation to color in autistic adults, measuring both strength of afterimage and the influence of top-down knowledge. We found no difference in color afterimage strength between autistic and typical adults. Effects of top-down knowledge on afterimage intensity shown by Lupyan (Acta Psychol 161:117-130, 2015. doi: 10.1016/j.actpsy.2015.08.006 ) were not replicated for either group. This study finds intact color adaptation in autistic adults. This is in contrast to findings of attenuated adaptation to faces and numerosity in autistic children. Future research should investigate the possibility of developmental differences in adaptation and further examine top-down effects on adaptation. En ligne : http://dx.doi.org/10.1007/s10803-016-2786-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=352

Color Perception in Children with Autism / Anna FRANKLIN in Journal of Autism and Developmental Disorders, 38-10 (November 2008)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 38-10 (November 2008) . - 1837-1847 Titre : Color Perception in Children with Autism Type de document : texte imprimé Auteurs : Anna FRANKLIN, Auteur ; Paul SOWDEN, Auteur ; Rachel BURLEY, Auteur ; Leslie NOTMAN, Auteur ; Elizabeth ALDER, Auteur Année de publication : 2008 Article en page(s) : 1837-1847 Langues : Anglais (eng) Mots-clés : Autism Color Perception Categorization Index. décimale : PER Périodiques Résumé : This study examined whether color perception is atypical in children with autism. In experiment 1, accuracy of color memory and search was compared for children with autism and typically developing children matched on age and non-verbal cognitive ability. Children with autism were significantly less accurate at color memory and search than controls. In experiment 2, chromatic discrimination and categorical perception of color were assessed using a target detection task. Children with autism were less accurate than controls at detecting chromatic targets when presented on chromatic backgrounds, although were equally as fast when target detection was accurate. The strength of categorical perception of color did not differ for the two groups. Implications for theories on perceptual development in autism are discussed. En ligne : http://dx.doi.org/10.1007/s10803-008-0574-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=641 [article] Color Perception in Children with Autism [texte imprimé] / Anna FRANKLIN, Auteur ; Paul SOWDEN, Auteur ; Rachel BURLEY, Auteur ; Leslie NOTMAN, Auteur ; Elizabeth ALDER, Auteur . - 2008 . - 1837-1847. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 38-10 (November 2008) . - 1837-1847 Mots-clés : Autism Color Perception Categorization Index. décimale : PER Périodiques Résumé : This study examined whether color perception is atypical in children with autism. In experiment 1, accuracy of color memory and search was compared for children with autism and typically developing children matched on age and non-verbal cognitive ability. Children with autism were significantly less accurate at color memory and search than controls. In experiment 2, chromatic discrimination and categorical perception of color were assessed using a target detection task. Children with autism were less accurate than controls at detecting chromatic targets when presented on chromatic backgrounds, although were equally as fast when target detection was accurate. The strength of categorical perception of color did not differ for the two groups. Implications for theories on perceptual development in autism are discussed. En ligne : http://dx.doi.org/10.1007/s10803-008-0574-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=641

Ensemble perception of color in autistic adults / John MAULE in Autism Research, 10-5 (May 2017)  

Public ISBD [article]  inAutism Research > 10-5 (May 2017) . - p.839-851 Titre : Ensemble perception of color in autistic adults Type de document : texte imprimé Auteurs : John MAULE, Auteur ; Kirstie STANWORTH, Auteur ; Elizabeth PELLICANO, Auteur ; Anna FRANKLIN, Auteur Article en page(s) : p.839-851 Langues : Anglais (eng) Mots-clés : autism  color  ensemble perception  visual perception  priors  global processing Index. décimale : PER Périodiques Résumé : Dominant accounts of visual processing in autism posit that autistic individuals have an enhanced access to details of scenes [e.g., weak central coherence] which is reflected in a general bias toward local processing. Furthermore, the attenuated priors account of autism predicts that the updating and use of summary representations is reduced in autism. Ensemble perception describes the extraction of global summary statistics of a visual feature from a heterogeneous set (e.g., of faces, sizes, colors), often in the absence of local item representation. The present study investigated ensemble perception in autistic adults using a rapidly presented (500 msec) ensemble of four, eight, or sixteen elements representing four different colors. We predicted that autistic individuals would be less accurate when averaging the ensembles, but more accurate in recognizing individual ensemble colors. The results were consistent with the predictions. Averaging was impaired in autism, but only when ensembles contained four elements. Ensembles of eight or sixteen elements were averaged equally accurately across groups. The autistic group also showed a corresponding advantage in rejecting colors that were not originally seen in the ensemble. The results demonstrate the local processing bias in autism, but also suggest that the global perceptual averaging mechanism may be compromised under some conditions. The theoretical implications of the findings and future avenues for research on summary statistics in autism are discussed. En ligne : http://dx.doi.org/10.1002/aur.1725 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=307 [article] Ensemble perception of color in autistic adults [texte imprimé] / John MAULE, Auteur ; Kirstie STANWORTH, Auteur ; Elizabeth PELLICANO, Auteur ; Anna FRANKLIN, Auteur . - p.839-851. Langues : Anglais (eng) in Autism Research > 10-5 (May 2017) . - p.839-851 Mots-clés : autism  color  ensemble perception  visual perception  priors  global processing Index. décimale : PER Périodiques Résumé : Dominant accounts of visual processing in autism posit that autistic individuals have an enhanced access to details of scenes [e.g., weak central coherence] which is reflected in a general bias toward local processing. Furthermore, the attenuated priors account of autism predicts that the updating and use of summary representations is reduced in autism. Ensemble perception describes the extraction of global summary statistics of a visual feature from a heterogeneous set (e.g., of faces, sizes, colors), often in the absence of local item representation. The present study investigated ensemble perception in autistic adults using a rapidly presented (500 msec) ensemble of four, eight, or sixteen elements representing four different colors. We predicted that autistic individuals would be less accurate when averaging the ensembles, but more accurate in recognizing individual ensemble colors. The results were consistent with the predictions. Averaging was impaired in autism, but only when ensembles contained four elements. Ensembles of eight or sixteen elements were averaged equally accurately across groups. The autistic group also showed a corresponding advantage in rejecting colors that were not originally seen in the ensemble. The results demonstrate the local processing bias in autism, but also suggest that the global perceptual averaging mechanism may be compromised under some conditions. The theoretical implications of the findings and future avenues for research on summary statistics in autism are discussed. En ligne : http://dx.doi.org/10.1002/aur.1725 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=307

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