5 recherche sur le mot-clé 'event related potentials'

Attribution of intentions in autism spectrum disorder: A study of event-related potentials / João Miguel FERNANDES in Autism Research, 15-5 (May 2022)  

Public ISBD [article]  inAutism Research > 15-5 (May 2022) . - p.847-860 Titre : Attribution of intentions in autism spectrum disorder: A study of event-related potentials Type de document : texte imprimé Auteurs : João Miguel FERNANDES, Auteur ; Sara SOARES, Auteur ; Ricardo LOPES, Auteur ; Rita JERÓNIMO, Auteur ; J. Bernardo BARAHONA-CORREA, Auteur Article en page(s) : p.847-860 Langues : Anglais (eng) Mots-clés : Adult  Autism Spectrum Disorder  Autistic Disorder  Evoked Potentials/physiology  Female  Humans  Intention  Male  Social Perception  attribution of intentions  autism spectrum disorders  event related potentials  social cognition & theory of mind Index. décimale : PER Périodiques Résumé : Autism spectrum disorder (ASD) is characterized by social cognition deficits, including difficulties inferring the intentions of others. Although deficits in attribution of intentions (AI) have been consistently replicated in ASD, their exact nature remains unexplored. Here we registered the electrophysiological correlates of a nonverbal social cognition task to investigate AI in autistic adults. Twenty-one male autistic adults and 30 male neurotypical volunteers performed a comic strips task depicting either intentional action (AI) or physical causality with or without human characters, while their electroencephalographic signal was recorded. Compared to neurotypical volunteers, autistic participants were significantly less accurate in correctly identifying congruence in the AI condition, but not in the physical causality conditions. In the AI condition a bilateral posterior positive event-related potential (ERP) occurred 200-400 ms post-stimulus (the ERP intention effect) in both groups. This waveform comprised a P200 and a P300 component, with the P200 component being larger for the AI condition in neurotypical volunteers but not in autistic individuals, who also showed a longer latency for this waveform. Group differences in amplitude of the ERP intention effect only became evident when we compared autistic participants to a subgroup of similarly performing neurotypical participants, suggesting that the atypical ERP waveform in ASD is an effect of group, rather than a marker of low-task performance. Together, these results suggest that the lower accuracy of the ASD group in the AI task may result from impaired early attentional processing and contextual integration of socially relevant cues. LAY SUMMARY: To understand why autistic people have difficulties in inferring others' intentions, we asked participants to judge the congruence of the endings of comic strips depicting either intentional actions (e.g., fetching a chair to reach for something) or situations solely following physical rules (e.g., an apple falling on someone's head), while their electrical brain activity was recorded. Autistic individuals had more difficulties in inferring intentions than neurotypical controls, which may reflect impaired attention and contextual integration of social cues. En ligne : http://dx.doi.org/10.1002/aur.2702 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=473 [article] Attribution of intentions in autism spectrum disorder: A study of event-related potentials [texte imprimé] / João Miguel FERNANDES, Auteur ; Sara SOARES, Auteur ; Ricardo LOPES, Auteur ; Rita JERÓNIMO, Auteur ; J. Bernardo BARAHONA-CORREA, Auteur . - p.847-860. Langues : Anglais (eng) in Autism Research > 15-5 (May 2022) . - p.847-860 Mots-clés : Adult  Autism Spectrum Disorder  Autistic Disorder  Evoked Potentials/physiology  Female  Humans  Intention  Male  Social Perception  attribution of intentions  autism spectrum disorders  event related potentials  social cognition & theory of mind Index. décimale : PER Périodiques Résumé : Autism spectrum disorder (ASD) is characterized by social cognition deficits, including difficulties inferring the intentions of others. Although deficits in attribution of intentions (AI) have been consistently replicated in ASD, their exact nature remains unexplored. Here we registered the electrophysiological correlates of a nonverbal social cognition task to investigate AI in autistic adults. Twenty-one male autistic adults and 30 male neurotypical volunteers performed a comic strips task depicting either intentional action (AI) or physical causality with or without human characters, while their electroencephalographic signal was recorded. Compared to neurotypical volunteers, autistic participants were significantly less accurate in correctly identifying congruence in the AI condition, but not in the physical causality conditions. In the AI condition a bilateral posterior positive event-related potential (ERP) occurred 200-400 ms post-stimulus (the ERP intention effect) in both groups. This waveform comprised a P200 and a P300 component, with the P200 component being larger for the AI condition in neurotypical volunteers but not in autistic individuals, who also showed a longer latency for this waveform. Group differences in amplitude of the ERP intention effect only became evident when we compared autistic participants to a subgroup of similarly performing neurotypical participants, suggesting that the atypical ERP waveform in ASD is an effect of group, rather than a marker of low-task performance. Together, these results suggest that the lower accuracy of the ASD group in the AI task may result from impaired early attentional processing and contextual integration of socially relevant cues. LAY SUMMARY: To understand why autistic people have difficulties in inferring others' intentions, we asked participants to judge the congruence of the endings of comic strips depicting either intentional actions (e.g., fetching a chair to reach for something) or situations solely following physical rules (e.g., an apple falling on someone's head), while their electrical brain activity was recorded. Autistic individuals had more difficulties in inferring intentions than neurotypical controls, which may reflect impaired attention and contextual integration of social cues. En ligne : http://dx.doi.org/10.1002/aur.2702 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=473

Emotional Face Perception: Event-Related Potentials (ERPS) Contribution to Differentiate Schizophrenia and Autism Spectrum Disorders in Adolescents / Valérie BONNARD-COUTON in Autism - Open Access, 5-3 ([01/06/2015])  

Public ISBD [article]  inAutism - Open Access > 5-3 [01/06/2015] . - 8 p. Titre : Emotional Face Perception: Event-Related Potentials (ERPS) Contribution to Differentiate Schizophrenia and Autism Spectrum Disorders in Adolescents Type de document : texte imprimé Auteurs : Valérie BONNARD-COUTON, Auteur ; Emmanuelle DOR, Auteur ; Andreia SANTOS, Auteur ; Michel BENOIT, Auteur ; Florence ASKENAZY, Auteur Article en page(s) : 8 p. Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Event related potentials  Schizophrenia Index. décimale : PER Périodiques Résumé : Early onset schizophrenia (EOS) and autism spectrum disorders (ASD) share similarities in the area of social cognition and emotion processing. It remains unclear whether these similarities come from shared or disorder-specific mechanisms and pathways. This study compared three groups of adolescents matched for age and verbal IQ: 18 adolescents with EOS (mean age=15 ± 1.6), 19 adolescents with ASD (mean age=15 ± 2.1) and 20 typically developing (TD) adolescents (mean age=14 ± 1.7). All groups completed an implicit emotional face perception task while visual ERPs (P100 and N170 components) were recorded. Both EOS and ASD adolescents showed impairments in emotion processing, but distinct patterns emerged in each disorder. These findings support the need for distinct early intervention approaches. En ligne : https://dx.doi.org/10.4172/2165-7890.1000156 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=409 [article] Emotional Face Perception: Event-Related Potentials (ERPS) Contribution to Differentiate Schizophrenia and Autism Spectrum Disorders in Adolescents [texte imprimé] / Valérie BONNARD-COUTON, Auteur ; Emmanuelle DOR, Auteur ; Andreia SANTOS, Auteur ; Michel BENOIT, Auteur ; Florence ASKENAZY, Auteur . - 8 p. Langues : Anglais (eng) in Autism - Open Access > 5-3 [01/06/2015] . - 8 p. Mots-clés : Autism spectrum disorder  Event related potentials  Schizophrenia Index. décimale : PER Périodiques Résumé : Early onset schizophrenia (EOS) and autism spectrum disorders (ASD) share similarities in the area of social cognition and emotion processing. It remains unclear whether these similarities come from shared or disorder-specific mechanisms and pathways. This study compared three groups of adolescents matched for age and verbal IQ: 18 adolescents with EOS (mean age=15 ± 1.6), 19 adolescents with ASD (mean age=15 ± 2.1) and 20 typically developing (TD) adolescents (mean age=14 ± 1.7). All groups completed an implicit emotional face perception task while visual ERPs (P100 and N170 components) were recorded. Both EOS and ASD adolescents showed impairments in emotion processing, but distinct patterns emerged in each disorder. These findings support the need for distinct early intervention approaches. En ligne : https://dx.doi.org/10.4172/2165-7890.1000156 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=409

Autism: Too eager to learn? Event related potential findings of increased dependency on intentional learning in a serial reaction time task / Fenny S. ZWART in Autism Research, 10-9 (September 2017)  

Public ISBD [article]  inAutism Research > 10-9 (September 2017) . - p.1533-1543 Titre : Autism: Too eager to learn? Event related potential findings of increased dependency on intentional learning in a serial reaction time task Type de document : texte imprimé Auteurs : Fenny S. ZWART, Auteur ; Constance T.W.M. VISSERS, Auteur ; Roemer VAN DER MEIJ, Auteur ; Roy P.C. KESSELS, Auteur ; Joseph H.R. MAES, Auteur Article en page(s) : p.1533-1543 Langues : Anglais (eng) Mots-clés : autism spectrum disorder  implicit learning  incidental learning  event related potentials  N2b  P3  serial reaction time task Index. décimale : PER Périodiques Résumé : It has been suggested that people with autism spectrum disorder (ASD) have an increased tendency to use explicit (or intentional) learning strategies. This altered learning may play a role in the development of the social communication difficulties characterizing ASD. In the current study, we investigated incidental and intentional sequence learning using a Serial Reaction Time (SRT) task in an adult ASD population. Response times and event related potentials (ERP) components (N2b and P3) were assessed as indicators of learning and knowledge. Findings showed that behaviorally, sequence learning and ensuing explicit knowledge were similar in ASD and typically developing (TD) controls. However, ERP findings showed that learning in the TD group was characterized by an enhanced N2b, while learning in the ASD group was characterized by an enhanced P3. These findings suggest that learning in the TD group might be more incidental in nature, whereas learning in the ASD group is more intentional or effortful. Increased intentional learning might serve as a strategy for individuals with ASD to control an overwhelming environment. Although this led to similar behavioral performances on the SRT task, it is very plausible that this intentional learning has adverse effects in more complex social situations, and hence contributes to the social impairments found in ASD. En ligne : http://dx.doi.org/10.1002/aur.1802 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=320 [article] Autism: Too eager to learn? Event related potential findings of increased dependency on intentional learning in a serial reaction time task [texte imprimé] / Fenny S. ZWART, Auteur ; Constance T.W.M. VISSERS, Auteur ; Roemer VAN DER MEIJ, Auteur ; Roy P.C. KESSELS, Auteur ; Joseph H.R. MAES, Auteur . - p.1533-1543. Langues : Anglais (eng) in Autism Research > 10-9 (September 2017) . - p.1533-1543 Mots-clés : autism spectrum disorder  implicit learning  incidental learning  event related potentials  N2b  P3  serial reaction time task Index. décimale : PER Périodiques Résumé : It has been suggested that people with autism spectrum disorder (ASD) have an increased tendency to use explicit (or intentional) learning strategies. This altered learning may play a role in the development of the social communication difficulties characterizing ASD. In the current study, we investigated incidental and intentional sequence learning using a Serial Reaction Time (SRT) task in an adult ASD population. Response times and event related potentials (ERP) components (N2b and P3) were assessed as indicators of learning and knowledge. Findings showed that behaviorally, sequence learning and ensuing explicit knowledge were similar in ASD and typically developing (TD) controls. However, ERP findings showed that learning in the TD group was characterized by an enhanced N2b, while learning in the ASD group was characterized by an enhanced P3. These findings suggest that learning in the TD group might be more incidental in nature, whereas learning in the ASD group is more intentional or effortful. Increased intentional learning might serve as a strategy for individuals with ASD to control an overwhelming environment. Although this led to similar behavioral performances on the SRT task, it is very plausible that this intentional learning has adverse effects in more complex social situations, and hence contributes to the social impairments found in ASD. En ligne : http://dx.doi.org/10.1002/aur.1802 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=320

Neurophysiological measures of auditory sensory processing are associated with adaptive behavior in children with Autism Spectrum Disorder / Mairin COTTER in Journal of Neurodevelopmental Disorders, 15 (2023)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 15 (2023) Titre : Neurophysiological measures of auditory sensory processing are associated with adaptive behavior in children with Autism Spectrum Disorder Type de document : texte imprimé Auteurs : Mairin COTTER, Auteur ; Seydanur REISLI, Auteur ; Ana Alves FRANCISCO, Auteur ; Kathryn-Mary WAKIM, Auteur ; Leona OAKES, Auteur ; Michael J. CROSSE, Auteur ; John J. FOXE, Auteur ; Sophie MOLHOLM, Auteur Langues : Anglais (eng) Mots-clés : Humans  Child  Autism Spectrum Disorder/complications  Evoked Potentials/physiology  Auditory Perception/physiology  Magnetoencephalography  Adaptation, Psychological  Adaptive behavior  Auditory processing  Autism Spectrum Disorder  Electroencephalography  Event related potentials  Lateralization Index. décimale : PER Périodiques Résumé : BACKGROUND: Atypical auditory cortical processing is consistently found in scalp electrophysiological and magnetoencephalographic studies of Autism Spectrum Disorder (ASD), and may provide a marker of neuropathological brain development. However, the relationship between atypical cortical processing of auditory information and adaptive behavior in ASD is not yet well understood. METHODS: We sought to test the hypothesis that early (100-175 ms) auditory processing in ASD is related to everyday adaptive behavior through the examination of auditory event-related potentials (AEPs) in response to simple tones and Vineland Adaptive Behavior Scales in a large cohort of children with ASD (N = 84), aged 6-17, and in age- and IQ- matched neurotypically (NT) developing controls (N = 132). RESULTS: Statistical analyses revealed significant group differences in early AEPs over temporal scalp regions (150-175 ms), and the expected rightward lateralization of the AEP (100-125 ms and 150-175 ms) to tonal stimuli in both groups. Lateralization of the AEP (150-175 ms) was significantly associated with adaptive functioning in the socialization domain. CONCLUSIONS: These results lend support to the hypothesis that atypical processing of sensory information is related to everyday adaptive behavior in autism. En ligne : https://dx.doi.org/10.1186/s11689-023-09480-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=575 [article] Neurophysiological measures of auditory sensory processing are associated with adaptive behavior in children with Autism Spectrum Disorder [texte imprimé] / Mairin COTTER, Auteur ; Seydanur REISLI, Auteur ; Ana Alves FRANCISCO, Auteur ; Kathryn-Mary WAKIM, Auteur ; Leona OAKES, Auteur ; Michael J. CROSSE, Auteur ; John J. FOXE, Auteur ; Sophie MOLHOLM, Auteur. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 15 (2023) Mots-clés : Humans  Child  Autism Spectrum Disorder/complications  Evoked Potentials/physiology  Auditory Perception/physiology  Magnetoencephalography  Adaptation, Psychological  Adaptive behavior  Auditory processing  Autism Spectrum Disorder  Electroencephalography  Event related potentials  Lateralization Index. décimale : PER Périodiques Résumé : BACKGROUND: Atypical auditory cortical processing is consistently found in scalp electrophysiological and magnetoencephalographic studies of Autism Spectrum Disorder (ASD), and may provide a marker of neuropathological brain development. However, the relationship between atypical cortical processing of auditory information and adaptive behavior in ASD is not yet well understood. METHODS: We sought to test the hypothesis that early (100-175 ms) auditory processing in ASD is related to everyday adaptive behavior through the examination of auditory event-related potentials (AEPs) in response to simple tones and Vineland Adaptive Behavior Scales in a large cohort of children with ASD (N = 84), aged 6-17, and in age- and IQ- matched neurotypically (NT) developing controls (N = 132). RESULTS: Statistical analyses revealed significant group differences in early AEPs over temporal scalp regions (150-175 ms), and the expected rightward lateralization of the AEP (100-125 ms and 150-175 ms) to tonal stimuli in both groups. Lateralization of the AEP (150-175 ms) was significantly associated with adaptive functioning in the socialization domain. CONCLUSIONS: These results lend support to the hypothesis that atypical processing of sensory information is related to everyday adaptive behavior in autism. En ligne : https://dx.doi.org/10.1186/s11689-023-09480-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=575

Brief Report: Biological Sound Processing in Children with Autistic Spectrum Disorder / Melissa LORTIE in Journal of Autism and Developmental Disorders, 47-6 (June 2017)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 47-6 (June 2017) . - p.1904-1909 Titre : Brief Report: Biological Sound Processing in Children with Autistic Spectrum Disorder Type de document : texte imprimé Auteurs : Melissa LORTIE, Auteur ; Léa PROULX-BEGIN, Auteur ; Dave SAINT-AMOUR, Auteur ; Dominique COUSINEAU, Auteur ; Hugo THEORET, Auteur ; Jean-François LEPAGE, Auteur Article en page(s) : p.1904-1909 Langues : Anglais (eng) Mots-clés : Social impairments  Event related potentials  EEG  Biological actions  Auditory  Attention  Novelty detection  MMN  P3 Index. décimale : PER Périodiques Résumé : There is debate whether social impairments in autism spectrum disorder (ASD) are truly domain-specific, or if they reflect generalized deficits in lower-level cognitive processes. To solve this issue, we used auditory-evoked EEG responses to assess novelty detection (MMN component) and involuntary attentional orientation (P3 component) induced by socially-relevant, human-produced, biological sounds and acoustically-matched control stimuli in children with ASD and controls. Results show that early sensory and novelty processing of biological stimuli are preserved in ASD, but that automatic attentional orientation for biological sounds is markedly altered. These results support the notion that at least some cognitive processes of ASD are specifically altered when it comes to processing social stimuli. En ligne : http://dx.doi.org/10.1007/s10803-017-3093-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=308 [article] Brief Report: Biological Sound Processing in Children with Autistic Spectrum Disorder [texte imprimé] / Melissa LORTIE, Auteur ; Léa PROULX-BEGIN, Auteur ; Dave SAINT-AMOUR, Auteur ; Dominique COUSINEAU, Auteur ; Hugo THEORET, Auteur ; Jean-François LEPAGE, Auteur . - p.1904-1909. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 47-6 (June 2017) . - p.1904-1909 Mots-clés : Social impairments  Event related potentials  EEG  Biological actions  Auditory  Attention  Novelty detection  MMN  P3 Index. décimale : PER Périodiques Résumé : There is debate whether social impairments in autism spectrum disorder (ASD) are truly domain-specific, or if they reflect generalized deficits in lower-level cognitive processes. To solve this issue, we used auditory-evoked EEG responses to assess novelty detection (MMN component) and involuntary attentional orientation (P3 component) induced by socially-relevant, human-produced, biological sounds and acoustically-matched control stimuli in children with ASD and controls. Results show that early sensory and novelty processing of biological stimuli are preserved in ASD, but that automatic attentional orientation for biological sounds is markedly altered. These results support the notion that at least some cognitive processes of ASD are specifically altered when it comes to processing social stimuli. En ligne : http://dx.doi.org/10.1007/s10803-017-3093-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=308