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Détail de l'auteur
Auteur S. VETTORI |
Documents disponibles écrits par cet auteur (2)
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Fast Periodic Visual Stimulation EEG Reveals Reduced Neural Sensitivity to Fearful Faces in Children with Autism / S. VAN DER DONCK in Journal of Autism and Developmental Disorders, 49-11 (November 2019)
[article]
Titre : Fast Periodic Visual Stimulation EEG Reveals Reduced Neural Sensitivity to Fearful Faces in Children with Autism Type de document : Texte imprimé et/ou numérique Auteurs : S. VAN DER DONCK, Auteur ; M. DZHELYOVA, Auteur ; S. VETTORI, Auteur ; H. THIELEN, Auteur ; J. STEYAERT, Auteur ; B. ROSSION, Auteur ; Bart BOETS, Auteur Article en page(s) : p.4658-4673 Langues : Anglais (eng) Mots-clés : Autism Eeg Fpvs Face inversion effect Facial emotion processing Implicit fear detection Index. décimale : PER Périodiques Résumé : We objectively quantified the neural sensitivity of school-aged boys with and without autism spectrum disorder (ASD) to detect briefly presented fearful expressions by combining fast periodic visual stimulation with frequency-tagging electroencephalography. Images of neutral faces were presented at 6 Hz, periodically interleaved with fearful expressions at 1.2 Hz oddball rate. While both groups equally display the face inversion effect and mainly rely on information from the mouth to detect fearful expressions, boys with ASD generally show reduced neural responses to rapid changes in expression. At an individual level, fear discrimination responses predict clinical status with an 83% accuracy. This implicit and straightforward approach identifies subtle deficits that remain concealed in behavioral tasks, thereby opening new perspectives for clinical diagnosis. En ligne : http://dx.doi.org/10.1007/s10803-019-04172-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=408
in Journal of Autism and Developmental Disorders > 49-11 (November 2019) . - p.4658-4673[article] Fast Periodic Visual Stimulation EEG Reveals Reduced Neural Sensitivity to Fearful Faces in Children with Autism [Texte imprimé et/ou numérique] / S. VAN DER DONCK, Auteur ; M. DZHELYOVA, Auteur ; S. VETTORI, Auteur ; H. THIELEN, Auteur ; J. STEYAERT, Auteur ; B. ROSSION, Auteur ; Bart BOETS, Auteur . - p.4658-4673.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 49-11 (November 2019) . - p.4658-4673
Mots-clés : Autism Eeg Fpvs Face inversion effect Facial emotion processing Implicit fear detection Index. décimale : PER Périodiques Résumé : We objectively quantified the neural sensitivity of school-aged boys with and without autism spectrum disorder (ASD) to detect briefly presented fearful expressions by combining fast periodic visual stimulation with frequency-tagging electroencephalography. Images of neutral faces were presented at 6 Hz, periodically interleaved with fearful expressions at 1.2 Hz oddball rate. While both groups equally display the face inversion effect and mainly rely on information from the mouth to detect fearful expressions, boys with ASD generally show reduced neural responses to rapid changes in expression. At an individual level, fear discrimination responses predict clinical status with an 83% accuracy. This implicit and straightforward approach identifies subtle deficits that remain concealed in behavioral tasks, thereby opening new perspectives for clinical diagnosis. En ligne : http://dx.doi.org/10.1007/s10803-019-04172-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=408 Investigating automatic emotion processing in boys with autism via eye tracking and facial mimicry recordings / S. VAN DER DONCK in Autism Research, 14-7 (July 2021)
[article]
Titre : Investigating automatic emotion processing in boys with autism via eye tracking and facial mimicry recordings Type de document : Texte imprimé et/ou numérique Auteurs : S. VAN DER DONCK, Auteur ; S. VETTORI, Auteur ; M. DZHELYOVA, Auteur ; S. S. MAHDI, Auteur ; P. CLAES, Auteur ; J. STEYAERT, Auteur ; Bart BOETS, Auteur Article en page(s) : p.1404-1420 Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorder/complications Autistic Disorder/complications Child Emotions Eye-Tracking Technology Facial Expression Facial Recognition Humans Male autism spectrum disorder emotion processing eye tracking facial expression recognition facial mimicry Index. décimale : PER Périodiques Résumé : Difficulties in automatic emotion processing in individuals with autism spectrum disorder (ASD) might remain concealed in behavioral studies due to compensatory strategies. To gain more insight in the mechanisms underlying facial emotion recognition, we recorded eye tracking and facial mimicry data of 20 school-aged boys with ASD and 20 matched typically developing controls while performing an explicit emotion recognition task. Proportional looking times to specific face regions (eyes, nose, and mouth) and face exploration dynamics were analyzed. In addition, facial mimicry was assessed. Boys with ASD and controls were equally capable to recognize expressions and did not differ in proportional looking times, and number and duration of fixations. Yet, specific facial expressions elicited particular gaze patterns, especially within the control group. Both groups showed similar face scanning dynamics, although boys with ASD demonstrated smaller saccadic amplitudes. Regarding the facial mimicry, we found no emotion specific facial responses and no group differences in the responses to the displayed facial expressions. Our results indicate that boys with and without ASD employ similar eye gaze strategies to recognize facial expressions. Smaller saccadic amplitudes in boys with ASD might indicate a less exploratory face processing strategy. Yet, this slightly more persistent visual scanning behavior in boys with ASD does not imply less efficient emotion information processing, given the similar behavioral performance. Results on the facial mimicry data indicate similar facial responses to emotional faces in boys with and without ASD. LAY SUMMARY: We investigated (i) whether boys with and without autism apply different face exploration strategies when recognizing facial expressions and (ii) whether they mimic the displayed facial expression to a similar extent. We found that boys with and without ASD recognize facial expressions equally well, and that both groups show similar facial reactions to the displayed facial emotions. Yet, boys with ASD visually explored the faces slightly less than the boys without ASD. En ligne : http://dx.doi.org/10.1002/aur.2490 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=449
in Autism Research > 14-7 (July 2021) . - p.1404-1420[article] Investigating automatic emotion processing in boys with autism via eye tracking and facial mimicry recordings [Texte imprimé et/ou numérique] / S. VAN DER DONCK, Auteur ; S. VETTORI, Auteur ; M. DZHELYOVA, Auteur ; S. S. MAHDI, Auteur ; P. CLAES, Auteur ; J. STEYAERT, Auteur ; Bart BOETS, Auteur . - p.1404-1420.
Langues : Anglais (eng)
in Autism Research > 14-7 (July 2021) . - p.1404-1420
Mots-clés : Autism Spectrum Disorder/complications Autistic Disorder/complications Child Emotions Eye-Tracking Technology Facial Expression Facial Recognition Humans Male autism spectrum disorder emotion processing eye tracking facial expression recognition facial mimicry Index. décimale : PER Périodiques Résumé : Difficulties in automatic emotion processing in individuals with autism spectrum disorder (ASD) might remain concealed in behavioral studies due to compensatory strategies. To gain more insight in the mechanisms underlying facial emotion recognition, we recorded eye tracking and facial mimicry data of 20 school-aged boys with ASD and 20 matched typically developing controls while performing an explicit emotion recognition task. Proportional looking times to specific face regions (eyes, nose, and mouth) and face exploration dynamics were analyzed. In addition, facial mimicry was assessed. Boys with ASD and controls were equally capable to recognize expressions and did not differ in proportional looking times, and number and duration of fixations. Yet, specific facial expressions elicited particular gaze patterns, especially within the control group. Both groups showed similar face scanning dynamics, although boys with ASD demonstrated smaller saccadic amplitudes. Regarding the facial mimicry, we found no emotion specific facial responses and no group differences in the responses to the displayed facial expressions. Our results indicate that boys with and without ASD employ similar eye gaze strategies to recognize facial expressions. Smaller saccadic amplitudes in boys with ASD might indicate a less exploratory face processing strategy. Yet, this slightly more persistent visual scanning behavior in boys with ASD does not imply less efficient emotion information processing, given the similar behavioral performance. Results on the facial mimicry data indicate similar facial responses to emotional faces in boys with and without ASD. LAY SUMMARY: We investigated (i) whether boys with and without autism apply different face exploration strategies when recognizing facial expressions and (ii) whether they mimic the displayed facial expression to a similar extent. We found that boys with and without ASD recognize facial expressions equally well, and that both groups show similar facial reactions to the displayed facial emotions. Yet, boys with ASD visually explored the faces slightly less than the boys without ASD. En ligne : http://dx.doi.org/10.1002/aur.2490 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=449