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Impaired Overt Facial Mimicry in Response to Dynamic Facial Expressions in High-Functioning Autism Spectrum Disorders / Sayaka YOSHIMURA in Journal of Autism and Developmental Disorders, 45-5 (May 2015)
[article]
Titre : Impaired Overt Facial Mimicry in Response to Dynamic Facial Expressions in High-Functioning Autism Spectrum Disorders Type de document : Texte imprimé et/ou numérique Auteurs : Sayaka YOSHIMURA, Auteur ; Wataru SATO, Auteur ; Shota UONO, Auteur ; Motomi TOICHI, Auteur Article en page(s) : p.1318-1328 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders (ASD) Dynamic facial expression Facial mimicry Reciprocal social interaction Index. décimale : PER Périodiques Résumé : Previous electromyographic studies have reported that individuals with autism spectrum disorders (ASD) exhibited atypical patterns of facial muscle activity in response to facial expression stimuli. However, whether such activity is expressed in visible facial mimicry remains unknown. To investigate this issue, we videotaped facial responses in high-functioning individuals with ASD and controls to dynamic and static facial expressions of anger and happiness. Visual coding of facial muscle activity and the subjective impression ratings showed reduced congruent responses to dynamic expressions in the ASD group. Additionally, this decline was related to social dysfunction. These results suggest that impairment in overt facial mimicry in response to others’ dynamic facial expressions may underlie difficulties in reciprocal social interaction among individuals with ASD. En ligne : http://dx.doi.org/10.1007/s10803-014-2291-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=259
in Journal of Autism and Developmental Disorders > 45-5 (May 2015) . - p.1318-1328[article] Impaired Overt Facial Mimicry in Response to Dynamic Facial Expressions in High-Functioning Autism Spectrum Disorders [Texte imprimé et/ou numérique] / Sayaka YOSHIMURA, Auteur ; Wataru SATO, Auteur ; Shota UONO, Auteur ; Motomi TOICHI, Auteur . - p.1318-1328.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 45-5 (May 2015) . - p.1318-1328
Mots-clés : Autism spectrum disorders (ASD) Dynamic facial expression Facial mimicry Reciprocal social interaction Index. décimale : PER Périodiques Résumé : Previous electromyographic studies have reported that individuals with autism spectrum disorders (ASD) exhibited atypical patterns of facial muscle activity in response to facial expression stimuli. However, whether such activity is expressed in visible facial mimicry remains unknown. To investigate this issue, we videotaped facial responses in high-functioning individuals with ASD and controls to dynamic and static facial expressions of anger and happiness. Visual coding of facial muscle activity and the subjective impression ratings showed reduced congruent responses to dynamic expressions in the ASD group. Additionally, this decline was related to social dysfunction. These results suggest that impairment in overt facial mimicry in response to others’ dynamic facial expressions may underlie difficulties in reciprocal social interaction among individuals with ASD. En ligne : http://dx.doi.org/10.1007/s10803-014-2291-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=259 Reduced representational momentum for subtle dynamic facial expressions in individuals with autism spectrum disorders / Shota UONO in Research in Autism Spectrum Disorders, 8-9 (September 2014)
[article]
Titre : Reduced representational momentum for subtle dynamic facial expressions in individuals with autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : Shota UONO, Auteur ; Wataru SATO, Auteur ; Motomi TOICHI, Auteur Article en page(s) : p.1090-1099 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders Dynamic facial expression Representational momentum Social impairment Index. décimale : PER Périodiques Résumé : Abstract The cognitive mechanisms underlying social communication via emotional facial expressions are crucial for understanding the social impairments experienced by people with autism spectrum disorders (ASD). A recent study (Yoshikawa amp; Sato, 2008) found that typically developing individuals perceived the last image from a dynamic facial expression to be more emotionally exaggerated than a static facial expression; this perceptual difference is termed representational momentum (RM) for dynamic facial expressions. RM for dynamic facial expressions might be useful for detecting emotion in another's face and for predicting behavior changes. We examined RM for dynamic facial expressions using facial expression stimuli at three levels of emotional intensity (subtle, medium, and extreme) in people with ASD. We predicted that individuals with ASD would show reduced RM for dynamic facial expressions. Eleven individuals with ASD (three with Asperger's disorder and eight with pervasive developmental disorder not otherwise specified) and 11 IQ-, age- and gender-matched typically developing controls participated in this study. Participants were asked to select an image that matched the final image from dynamic and static facial expressions. Our results revealed that subjectively perceived images were more exaggerated for the dynamic than for the static presentation under all levels of intensity and in both groups. The ASD group, however, perceived a reduced degree of exaggeration for dynamic facial expressions under the subtle intensity condition. As facial expressions are often displayed subtly in daily communications, reduced RM for subtle dynamic facial expressions may prevent individuals with ASD from appropriately interacting with other people as a consequence of their difficulty detecting others’ emotions. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.05.018 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=238
in Research in Autism Spectrum Disorders > 8-9 (September 2014) . - p.1090-1099[article] Reduced representational momentum for subtle dynamic facial expressions in individuals with autism spectrum disorders [Texte imprimé et/ou numérique] / Shota UONO, Auteur ; Wataru SATO, Auteur ; Motomi TOICHI, Auteur . - p.1090-1099.
Langues : Anglais (eng)
in Research in Autism Spectrum Disorders > 8-9 (September 2014) . - p.1090-1099
Mots-clés : Autism spectrum disorders Dynamic facial expression Representational momentum Social impairment Index. décimale : PER Périodiques Résumé : Abstract The cognitive mechanisms underlying social communication via emotional facial expressions are crucial for understanding the social impairments experienced by people with autism spectrum disorders (ASD). A recent study (Yoshikawa amp; Sato, 2008) found that typically developing individuals perceived the last image from a dynamic facial expression to be more emotionally exaggerated than a static facial expression; this perceptual difference is termed representational momentum (RM) for dynamic facial expressions. RM for dynamic facial expressions might be useful for detecting emotion in another's face and for predicting behavior changes. We examined RM for dynamic facial expressions using facial expression stimuli at three levels of emotional intensity (subtle, medium, and extreme) in people with ASD. We predicted that individuals with ASD would show reduced RM for dynamic facial expressions. Eleven individuals with ASD (three with Asperger's disorder and eight with pervasive developmental disorder not otherwise specified) and 11 IQ-, age- and gender-matched typically developing controls participated in this study. Participants were asked to select an image that matched the final image from dynamic and static facial expressions. Our results revealed that subjectively perceived images were more exaggerated for the dynamic than for the static presentation under all levels of intensity and in both groups. The ASD group, however, perceived a reduced degree of exaggeration for dynamic facial expressions under the subtle intensity condition. As facial expressions are often displayed subtly in daily communications, reduced RM for subtle dynamic facial expressions may prevent individuals with ASD from appropriately interacting with other people as a consequence of their difficulty detecting others’ emotions. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.05.018 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=238