Impaired attentional bias toward one's own face in autism spectrum disorder: ERP evidence / H. B. CYGAN in Autism Research, 15-2 (February 2022)  

Public ISBD [article]  inAutism Research > 15-2 (February 2022) . - p.241-253 Titre : Impaired attentional bias toward one's own face in autism spectrum disorder: ERP evidence Type de document : Texte imprimé et/ou numérique Auteurs : H. B. CYGAN, Auteur ; M. M. NOWICKA, Auteur ; A. NOWICKA, Auteur Article en page(s) : p.241-253 Langues : Anglais (eng) Mots-clés : Erp  attention  autism  self-face Index. décimale : PER Périodiques Résumé : Converging lines of evidence seem to indicate reduced self-referential processing in individuals with autism spectrum disorder (ASD). However, processing of one's own face has rarely been investigated in the context of ASD. Thus, the aim of the present study was to elucidate the role of attentional biases in the processing of self- and other faces in ASD. To achieve this goal we presented participants with images of their own face, the face of a close-other, and famous and unknown faces in a Stroop-like paradigm. Participants (22 with ASD, 22 typically developing [TD]) were instructed to indicate the color of presented faces while EEG was recorded. Our event-related potential results clearly showed that self-face was associated with larger P3 amplitudes than all other faces in the TD group, thus indicating a strong attentional bias toward one's own face. In the ASD group, P3 to the self-face and the close-other's face did not differ, suggesting similar attentional biases in both cases. In line with these P3 findings, nonparametric cluster-based permutation tests showed an analogous pattern of results: significant clusters for the self-face compared with all other faces in the TD group, and no significant cluster in the ASD group. Overall, our findings revealed impaired attentional bias to one's own face and diminished self versus other differentiation in individuals with ASD. The similar neural underpinnings of the self-face and other faces supports previous findings indicating reduced self-prioritization among individuals with ASD. En ligne : http://dx.doi.org/10.1002/aur.2647 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=450 [article] Impaired attentional bias toward one's own face in autism spectrum disorder: ERP evidence [Texte imprimé et/ou numérique] / H. B. CYGAN, Auteur ; M. M. NOWICKA, Auteur ; A. NOWICKA, Auteur . - p.241-253. Langues : Anglais (eng) in Autism Research > 15-2 (February 2022) . - p.241-253 Mots-clés : Erp  attention  autism  self-face Index. décimale : PER Périodiques Résumé : Converging lines of evidence seem to indicate reduced self-referential processing in individuals with autism spectrum disorder (ASD). However, processing of one's own face has rarely been investigated in the context of ASD. Thus, the aim of the present study was to elucidate the role of attentional biases in the processing of self- and other faces in ASD. To achieve this goal we presented participants with images of their own face, the face of a close-other, and famous and unknown faces in a Stroop-like paradigm. Participants (22 with ASD, 22 typically developing [TD]) were instructed to indicate the color of presented faces while EEG was recorded. Our event-related potential results clearly showed that self-face was associated with larger P3 amplitudes than all other faces in the TD group, thus indicating a strong attentional bias toward one's own face. In the ASD group, P3 to the self-face and the close-other's face did not differ, suggesting similar attentional biases in both cases. In line with these P3 findings, nonparametric cluster-based permutation tests showed an analogous pattern of results: significant clusters for the self-face compared with all other faces in the TD group, and no significant cluster in the ASD group. Overall, our findings revealed impaired attentional bias to one's own face and diminished self versus other differentiation in individuals with ASD. The similar neural underpinnings of the self-face and other faces supports previous findings indicating reduced self-prioritization among individuals with ASD. En ligne : http://dx.doi.org/10.1002/aur.2647 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=450

Name recognition in autism: EEG evidence of altered patterns of brain activity and connectivity / A. NOWICKA in Molecular Autism, 7 (2016)  

Public ISBD [article]  inMolecular Autism > 7 (2016) . - 38p. Titre : Name recognition in autism: EEG evidence of altered patterns of brain activity and connectivity Type de document : Texte imprimé et/ou numérique Auteurs : A. NOWICKA, Auteur ; H. B. CYGAN, Auteur ; P. TACIKOWSKI, Auteur ; P. OSTASZEWSKI, Auteur ; R. KUS, Auteur Article en page(s) : 38p. Langues : Anglais (eng) Mots-clés : Adolescent  Adult  Autistic Disorder/physiopathology  Brain/physiology  Electroencephalography  Evoked Potentials  Humans  Male  Names  Recognition (Psychology)  Young Adult  Autism spectrum disorder  Coherence  Directed transfer function  Erp  Event-related desynchronization and synchronization Index. décimale : PER Périodiques Résumé : BACKGROUND: Impaired orienting to social stimuli is one of the core early symptoms of autism spectrum disorder (ASD). However, in contrast to faces, name processing has rarely been studied in individuals with ASD. Here, we investigated brain activity and functional connectivity associated with recognition of names in the high-functioning ASD group and in the control group. METHODS: EEG was recorded in 15 young males with ASD and 15 matched one-to-one control individuals. EEG data were analyzed with the event-related potential (ERP), event-related desynchronization and event-related synchronization (ERD/S), as well as coherence and direct transfer function (DTF) methods. Four categories of names were presented visually: one's own, close-other's, famous, and unknown. RESULTS: Differences between the ASD and control groups were found for ERP, coherence, and DTF. In individuals with ASD, P300 (a positive ERP component) to own-name and to a close-other's name were similar whereas in control participants, P300 to own-name was enhanced when compared to all other names. Analysis of coherence and DTF revealed disruption of fronto-posterior task-related connectivity in individuals with ASD within the beta range frequencies. Moreover, DTF indicated the directionality of those impaired connections-they were going from parieto-occipital to frontal regions. DTF also showed inter-group differences in short-range connectivity: weaker connections within the frontal region and stronger connections within the occipital region in the ASD group in comparison to the control group. CONCLUSIONS: Our findings suggest a lack of the self-preference effect and impaired functioning of the attentional network during recognition of visually presented names in individuals with ASD. En ligne : http://dx.doi.org/10.1186/s13229-016-0102-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=328 [article] Name recognition in autism: EEG evidence of altered patterns of brain activity and connectivity [Texte imprimé et/ou numérique] / A. NOWICKA, Auteur ; H. B. CYGAN, Auteur ; P. TACIKOWSKI, Auteur ; P. OSTASZEWSKI, Auteur ; R. KUS, Auteur . - 38p. Langues : Anglais (eng) in Molecular Autism > 7 (2016) . - 38p. Mots-clés : Adolescent  Adult  Autistic Disorder/physiopathology  Brain/physiology  Electroencephalography  Evoked Potentials  Humans  Male  Names  Recognition (Psychology)  Young Adult  Autism spectrum disorder  Coherence  Directed transfer function  Erp  Event-related desynchronization and synchronization Index. décimale : PER Périodiques Résumé : BACKGROUND: Impaired orienting to social stimuli is one of the core early symptoms of autism spectrum disorder (ASD). However, in contrast to faces, name processing has rarely been studied in individuals with ASD. Here, we investigated brain activity and functional connectivity associated with recognition of names in the high-functioning ASD group and in the control group. METHODS: EEG was recorded in 15 young males with ASD and 15 matched one-to-one control individuals. EEG data were analyzed with the event-related potential (ERP), event-related desynchronization and event-related synchronization (ERD/S), as well as coherence and direct transfer function (DTF) methods. Four categories of names were presented visually: one's own, close-other's, famous, and unknown. RESULTS: Differences between the ASD and control groups were found for ERP, coherence, and DTF. In individuals with ASD, P300 (a positive ERP component) to own-name and to a close-other's name were similar whereas in control participants, P300 to own-name was enhanced when compared to all other names. Analysis of coherence and DTF revealed disruption of fronto-posterior task-related connectivity in individuals with ASD within the beta range frequencies. Moreover, DTF indicated the directionality of those impaired connections-they were going from parieto-occipital to frontal regions. DTF also showed inter-group differences in short-range connectivity: weaker connections within the frontal region and stronger connections within the occipital region in the ASD group in comparison to the control group. CONCLUSIONS: Our findings suggest a lack of the self-preference effect and impaired functioning of the attentional network during recognition of visually presented names in individuals with ASD. En ligne : http://dx.doi.org/10.1186/s13229-016-0102-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=328

Neural Correlates of Reflection on Present and Past Selves in Autism Spectrum Disorder / H. B. CYGAN in Journal of Autism and Developmental Disorders, 49-3 (March 2019)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 49-3 (March 2019) . - p.1267-1277 Titre : Neural Correlates of Reflection on Present and Past Selves in Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : H. B. CYGAN, Auteur ; A. MARCHEWKA, Auteur ; I. KOTLEWSKA, Auteur ; A. NOWICKA, Auteur Article en page(s) : p.1267-1277 Langues : Anglais (eng) Mots-clés : Autobiographical memory  Self-continuity  Self-referential processing  fMRI Index. décimale : PER Périodiques Résumé : Previous studies indicate that autobiographical memory is impaired in individuals with autism spectrum disorder (ASD). Successful recollection of information referring to one's own person requires the intact ability to re-activate representation of the past self. In the current fMRI study we investigated process of conscious reflection on the present self, the past self, and a close-other in the ASD and typically developing groups. Significant inter-group differences were found in the Past-Self condition. In individuals with ASD, reflection on the past self was associated with additional engagement of the posterior cingulate and posterior temporal structures. We hypothesize that this enhanced activation of widely distributed neural network reflects substantial difficulties in processes of reflection on one's own person in the past. En ligne : http://dx.doi.org/10.1007/s10803-018-3621-y Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=386 [article] Neural Correlates of Reflection on Present and Past Selves in Autism Spectrum Disorder [Texte imprimé et/ou numérique] / H. B. CYGAN, Auteur ; A. MARCHEWKA, Auteur ; I. KOTLEWSKA, Auteur ; A. NOWICKA, Auteur . - p.1267-1277. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 49-3 (March 2019) . - p.1267-1277 Mots-clés : Autobiographical memory  Self-continuity  Self-referential processing  fMRI Index. décimale : PER Périodiques Résumé : Previous studies indicate that autobiographical memory is impaired in individuals with autism spectrum disorder (ASD). Successful recollection of information referring to one's own person requires the intact ability to re-activate representation of the past self. In the current fMRI study we investigated process of conscious reflection on the present self, the past self, and a close-other in the ASD and typically developing groups. Significant inter-group differences were found in the Past-Self condition. In individuals with ASD, reflection on the past self was associated with additional engagement of the posterior cingulate and posterior temporal structures. We hypothesize that this enhanced activation of widely distributed neural network reflects substantial difficulties in processes of reflection on one's own person in the past. En ligne : http://dx.doi.org/10.1007/s10803-018-3621-y Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=386

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