[article] 
inAutism Research > 1-3 (June 2008) . - p.179-188

Titre :	Detecting changes in naturalistic scenes: contextual inconsistency does not influence spontaneous attention in high-functioning people with autism spectrum disorder
Type de document :	Texte imprimé et/ou numérique
Auteurs :	Eva LOTH, Auteur ; Francesca HAPPE, Auteur ; Juan-Carlos GOMEZ, Auteur
Année de publication :	2008
Article en page(s) :	p.179-188
Langues :	Anglais (eng)
Index. décimale :	PER Périodiques
Résumé :	Individuals with autism spectrum disorders (ASD) are often reported to be good at detecting minute changes in the environment. This study tested two factors in this phenomenon; detail-focus and reduced top-down influence of scene-schema expectations on spontaneous attention to visual scene elements. Using a change blindness paradigm, adults with ASD and matched typically developing (TD) adults were presented with images of naturalistic scenes (e.g., living room). Scene changes involved three types of object substitution: an object was replaced with (i) an unexpected scene-unrelated object, (ii) a scene-related object of a different basic-level category, (iii) or a different exemplar of the original object category. Top-down effects of scene-schema expectations should render scene-unrelated (i) substitutions easiest to recognize; detail focus should increase detection of exemplar changes. The TD group showed the expected condition effects, detecting scene-unrelated substitutions significantly better than both types of scene-related changes. By contrast, the ASD group showed no condition effect, and was only significantly slower and less accurate than the TD group in detecting scene-unrelated objects. These findings suggest reduced influence of schematic expectations on spontaneous attention in individuals with ASD. Together with other factors, this may contribute to the tendency to notice irrelevant changes in the environment.
En ligne :	http://dx.doi.org/10.1002/aur.19
Permalink :	https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=931

[article] Detecting changes in naturalistic scenes: contextual inconsistency does not influence spontaneous attention in high-functioning people with autism spectrum disorder [Texte imprimé et/ou numérique] / Eva LOTH, Auteur ; Francesca HAPPE, Auteur ; Juan-Carlos GOMEZ, Auteur . - 2008 . - p.179-188.
Langues : Anglais (eng)
in Autism Research > 1-3 (June 2008) . - p.179-188

Index. décimale :	PER Périodiques
Résumé :	Individuals with autism spectrum disorders (ASD) are often reported to be good at detecting minute changes in the environment. This study tested two factors in this phenomenon; detail-focus and reduced top-down influence of scene-schema expectations on spontaneous attention to visual scene elements. Using a change blindness paradigm, adults with ASD and matched typically developing (TD) adults were presented with images of naturalistic scenes (e.g., living room). Scene changes involved three types of object substitution: an object was replaced with (i) an unexpected scene-unrelated object, (ii) a scene-related object of a different basic-level category, (iii) or a different exemplar of the original object category. Top-down effects of scene-schema expectations should render scene-unrelated (i) substitutions easiest to recognize; detail focus should increase detection of exemplar changes. The TD group showed the expected condition effects, detecting scene-unrelated substitutions significantly better than both types of scene-related changes. By contrast, the ASD group showed no condition effect, and was only significantly slower and less accurate than the TD group in detecting scene-unrelated objects. These findings suggest reduced influence of schematic expectations on spontaneous attention in individuals with ASD. Together with other factors, this may contribute to the tendency to notice irrelevant changes in the environment.
En ligne :	http://dx.doi.org/10.1002/aur.19
Permalink :	https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=931