33 recherche sur le mot-clé 'Erp'

Don't touch me! autistic traits modulate early and late ERP components during visual perception of social touch / Leehe PELED-AVRON in Autism Research, 10-6 (June 2017)  

Public ISBD [article]  inAutism Research > 10-6 (June 2017) . - p.1141-1154 Titre : Don't touch me! autistic traits modulate early and late ERP components during visual perception of social touch Type de document : texte imprimé Auteurs : Leehe PELED-AVRON, Auteur ; Simone G. SHAMAY-TSOORY, Auteur Article en page(s) : p.1141-1154 Langues : Anglais (eng) Mots-clés : autistic traits  interpersonal touch  ERP  LPP  P1 Index. décimale : PER Périodiques Résumé : Although individuals with autism spectrum disorder (ASD) have impaired responses to interpersonal touch, the underlying neural correlates remain largely unknown. Here, we examined the neural correlates that underlie interpersonal touch perception in individuals with either high or low autistic traits. Fifty-three participants were classified as having either high or low autistic traits based on their performance on the autism quotient (AQ) questionnaire. We hypothesized that individuals with high AQ scores would have relatively high touch hypervigilance, reflected as earlier P1 and stronger late positive potential (LPP) responses, two components of event-related potentials that serve as electrophysiological markers of anxiety bias. We recorded each participant's electroencephalography activity during presentation of images depicting human touch, object touch, and non-touch control images. Consistent with our hypothesis, AQ scores were positively correlated with social touch aversion. Moreover, participants with high AQ scores had earlier P1 and stronger LPP responses when presented with human touch compared to the control images. Importantly, a regression model revealed that earlier P1 and larger LPP amplitude measured during social touch observation can accurately predict higher autistic trait levels. Taken together, these findings indicate that individuals with high levels of autistic traits may have a hypervigilant response to observed social touch. En ligne : http://dx.doi.org/10.1002/aur.1762 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=309 [article] Don't touch me! autistic traits modulate early and late ERP components during visual perception of social touch [texte imprimé] / Leehe PELED-AVRON, Auteur ; Simone G. SHAMAY-TSOORY, Auteur . - p.1141-1154. Langues : Anglais (eng) in Autism Research > 10-6 (June 2017) . - p.1141-1154 Mots-clés : autistic traits  interpersonal touch  ERP  LPP  P1 Index. décimale : PER Périodiques Résumé : Although individuals with autism spectrum disorder (ASD) have impaired responses to interpersonal touch, the underlying neural correlates remain largely unknown. Here, we examined the neural correlates that underlie interpersonal touch perception in individuals with either high or low autistic traits. Fifty-three participants were classified as having either high or low autistic traits based on their performance on the autism quotient (AQ) questionnaire. We hypothesized that individuals with high AQ scores would have relatively high touch hypervigilance, reflected as earlier P1 and stronger late positive potential (LPP) responses, two components of event-related potentials that serve as electrophysiological markers of anxiety bias. We recorded each participant's electroencephalography activity during presentation of images depicting human touch, object touch, and non-touch control images. Consistent with our hypothesis, AQ scores were positively correlated with social touch aversion. Moreover, participants with high AQ scores had earlier P1 and stronger LPP responses when presented with human touch compared to the control images. Importantly, a regression model revealed that earlier P1 and larger LPP amplitude measured during social touch observation can accurately predict higher autistic trait levels. Taken together, these findings indicate that individuals with high levels of autistic traits may have a hypervigilant response to observed social touch. En ligne : http://dx.doi.org/10.1002/aur.1762 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=309

Event-related potential (ERP) correlates of face processing in verbal children with autism spectrum disorders (ASD) and their first-degree relatives: a family study / Olga V. SYSOEVA in Molecular Autism, 9 (2018)  

Public ISBD [article]  inMolecular Autism > 9 (2018) . - 41p. Titre : Event-related potential (ERP) correlates of face processing in verbal children with autism spectrum disorders (ASD) and their first-degree relatives: a family study Type de document : texte imprimé Auteurs : Olga V. SYSOEVA, Auteur ; John N. CONSTANTINO, Auteur ; Andrey P. ANOKHIN, Auteur Article en page(s) : 41p. Langues : Anglais (eng) Mots-clés : Adolescent  Adult  Autism Spectrum Disorder/physiopathology  Child  Electroencephalography  Evoked Potentials  Face  Fathers  Humans  Male  Middle Aged  Pattern Recognition, Visual  Siblings  Young Adult  Autistic disorder  erp  Electrophysiology  Endophenotype  N170 Index. décimale : PER Périodiques Résumé : Background: Inherited abnormalities of perception, recognition, and attention to faces have been implicated in the etiology of autism spectrum disorders (ASD) including abnormal components of event-related brain potentials (ERP) elicited by faces. Methods: We examined familial aggregation of face processing ERP abnormalities previously implicated in ASD in 49 verbal individuals with ASD, 36 unaffected siblings (US), 18 unaffected fathers (UF), and 53 unrelated controls (UC). The ASD, US, and UC groups ranged in age from 12 to 21 years, the UF group ranged in age from 30 to 56 years. ERP responses to images of upright and inverted faces and houses were analyzed under disparate EEG reference schemes. Results: Face-sensitive features of N170 and P1 were readily observed in all groups. Differences between ASD and control groups depended upon the EEG reference scheme. Notably, the superiority of face over object for N170 latency was attenuated in ASD subjects, but not their relatives; this occurred exclusively with the average reference. The difference in N170 amplitude between inverted and upright faces was reduced in both ASD and US groups relative to UC, but this effect was significant only with the vertex reference. Furthermore, similar group differences were observed for both inverted faces and inverted houses, suggesting a lack of face specificity for the attenuation of the N170 inversion effect in ASD. Conclusion: The present findings refine understanding of face processing ERPs in ASD. These data provide only modest evidence for highly-selective ASD-sensitive ERP features, and underscore the sensitivity of these biomarkers to ERP reference scheme. These schemes have varied across published studies and must be accounted for in future studies of the relationship between these commonly acquired ERP characteristics, genotype, and ASD. En ligne : https://dx.doi.org/10.1186/s13229-018-0220-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=371 [article] Event-related potential (ERP) correlates of face processing in verbal children with autism spectrum disorders (ASD) and their first-degree relatives: a family study [texte imprimé] / Olga V. SYSOEVA, Auteur ; John N. CONSTANTINO, Auteur ; Andrey P. ANOKHIN, Auteur . - 41p. Langues : Anglais (eng) in Molecular Autism > 9 (2018) . - 41p. Mots-clés : Adolescent  Adult  Autism Spectrum Disorder/physiopathology  Child  Electroencephalography  Evoked Potentials  Face  Fathers  Humans  Male  Middle Aged  Pattern Recognition, Visual  Siblings  Young Adult  Autistic disorder  erp  Electrophysiology  Endophenotype  N170 Index. décimale : PER Périodiques Résumé : Background: Inherited abnormalities of perception, recognition, and attention to faces have been implicated in the etiology of autism spectrum disorders (ASD) including abnormal components of event-related brain potentials (ERP) elicited by faces. Methods: We examined familial aggregation of face processing ERP abnormalities previously implicated in ASD in 49 verbal individuals with ASD, 36 unaffected siblings (US), 18 unaffected fathers (UF), and 53 unrelated controls (UC). The ASD, US, and UC groups ranged in age from 12 to 21 years, the UF group ranged in age from 30 to 56 years. ERP responses to images of upright and inverted faces and houses were analyzed under disparate EEG reference schemes. Results: Face-sensitive features of N170 and P1 were readily observed in all groups. Differences between ASD and control groups depended upon the EEG reference scheme. Notably, the superiority of face over object for N170 latency was attenuated in ASD subjects, but not their relatives; this occurred exclusively with the average reference. The difference in N170 amplitude between inverted and upright faces was reduced in both ASD and US groups relative to UC, but this effect was significant only with the vertex reference. Furthermore, similar group differences were observed for both inverted faces and inverted houses, suggesting a lack of face specificity for the attenuation of the N170 inversion effect in ASD. Conclusion: The present findings refine understanding of face processing ERPs in ASD. These data provide only modest evidence for highly-selective ASD-sensitive ERP features, and underscore the sensitivity of these biomarkers to ERP reference scheme. These schemes have varied across published studies and must be accounted for in future studies of the relationship between these commonly acquired ERP characteristics, genotype, and ASD. En ligne : https://dx.doi.org/10.1186/s13229-018-0220-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=371

Impaired attentional bias toward one's own face in autism spectrum disorder: ERP evidence / Hanna 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 Auteurs : Hanna B. CYGAN, Auteur ; Maria M. NOWICKA, Auteur ; Anna 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] / Hanna B. CYGAN, Auteur ; Maria M. NOWICKA, Auteur ; Anna 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

Is the dolphin a fish? ERP evidence for the impact of typicality during early visual processing in ultra-rapid semantic categorization in autism spectrum disorder / Ann-Kathrin BECK in Journal of Neurodevelopmental Disorders, 14 (2022)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 14 (2022) Titre : Is the dolphin a fish? ERP evidence for the impact of typicality during early visual processing in ultra-rapid semantic categorization in autism spectrum disorder Type de document : texte imprimé Auteurs : Ann-Kathrin BECK, Auteur ; Daniela CZERNOCHOWSKI, Auteur ; Thomas LACHMANN, Auteur ; Bernardo BARAHONA-CORREA, Auteur ; Joana C. CARMO, Auteur Langues : Anglais (eng) Mots-clés : Animals  Autism Spectrum Disorder  Cognition  Dolphins  Male  Semantics  Visual Perception  Autistic spectrum  D prime  Eeg  Erp  High functioning  Presentation time Index. décimale : PER Périodiques Résumé : BACKGROUND: Neurotypical individuals categorize items even during ultra-rapid presentations (20 ms; see Thorpe et al. Nature 381: 520, 1996). In cognitively able autistic adults, these semantic categorization processes may be impaired and/or may require additional time, specifically for the categorization of atypical compared to typical items. Here, we investigated how typicality structures influence ultra-rapid categorization in cognitively able autistic and neurotypical male adults. METHODS: Images representing typical or atypical exemplars of two different categories (food/animals) were presented for 23.5 vs. 82.3 ms (short/long). We analyzed detection rates, reaction times, and the event-related potential components dN150, N1, P2, N2, and P3 for each group. RESULTS: Behavioral results suggest slower and less correct responses to atypical compared to typical images. This typicality effect was larger for the category with less distinct boundaries (food) and observed in both groups. However, electrophysiological data indicate a different time course of typicality effects, suggesting that neurotypical adults categorize atypical images based on simple features (P2), whereas cognitively able autistic adults categorize later, based on arbitrary features of atypical images (P3). CONCLUSIONS: We found evidence that all three factors under investigation - category, typicality, and presentation time - modulated specific aspects of semantic categorization. Additionally, we observed a qualitatively different pattern in the autistic adults, which suggests that they relied on different cognitive processes to complete the task. En ligne : https://dx.doi.org/10.1186/s11689-022-09457-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=574 [article] Is the dolphin a fish? ERP evidence for the impact of typicality during early visual processing in ultra-rapid semantic categorization in autism spectrum disorder [texte imprimé] / Ann-Kathrin BECK, Auteur ; Daniela CZERNOCHOWSKI, Auteur ; Thomas LACHMANN, Auteur ; Bernardo BARAHONA-CORREA, Auteur ; Joana C. CARMO, Auteur. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 14 (2022) Mots-clés : Animals  Autism Spectrum Disorder  Cognition  Dolphins  Male  Semantics  Visual Perception  Autistic spectrum  D prime  Eeg  Erp  High functioning  Presentation time Index. décimale : PER Périodiques Résumé : BACKGROUND: Neurotypical individuals categorize items even during ultra-rapid presentations (20 ms; see Thorpe et al. Nature 381: 520, 1996). In cognitively able autistic adults, these semantic categorization processes may be impaired and/or may require additional time, specifically for the categorization of atypical compared to typical items. Here, we investigated how typicality structures influence ultra-rapid categorization in cognitively able autistic and neurotypical male adults. METHODS: Images representing typical or atypical exemplars of two different categories (food/animals) were presented for 23.5 vs. 82.3 ms (short/long). We analyzed detection rates, reaction times, and the event-related potential components dN150, N1, P2, N2, and P3 for each group. RESULTS: Behavioral results suggest slower and less correct responses to atypical compared to typical images. This typicality effect was larger for the category with less distinct boundaries (food) and observed in both groups. However, electrophysiological data indicate a different time course of typicality effects, suggesting that neurotypical adults categorize atypical images based on simple features (P2), whereas cognitively able autistic adults categorize later, based on arbitrary features of atypical images (P3). CONCLUSIONS: We found evidence that all three factors under investigation - category, typicality, and presentation time - modulated specific aspects of semantic categorization. Additionally, we observed a qualitatively different pattern in the autistic adults, which suggests that they relied on different cognitive processes to complete the task. En ligne : https://dx.doi.org/10.1186/s11689-022-09457-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=574

Linguistic and Non-Linguistic Semantic Processing in Individuals with Autism Spectrum Disorders: An ERP Study / Emily L. CODERRE in Journal of Autism and Developmental Disorders, 47-3 (March 2017)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 47-3 (March 2017) . - p.795-812 Titre : Linguistic and Non-Linguistic Semantic Processing in Individuals with Autism Spectrum Disorders: An ERP Study Type de document : texte imprimé Auteurs : Emily L. CODERRE, Auteur ; Mariya CHERNENOK, Auteur ; Barry GORDON, Auteur ; Kerry LEDOUX, Auteur Article en page(s) : p.795-812 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders  Semantic processing  ERP  Language  Pictures Index. décimale : PER Périodiques Résumé : Individuals with autism spectrum disorders (ASD) experience difficulties with language, particularly higher-level functions like semantic integration. Yet some studies indicate that semantic processing of non-linguistic stimuli is not impaired, suggesting a language-specific deficit in semantic processing. Using a semantic priming task, we compared event-related potentials (ERPs) in response to lexico-semantic processing (written words) and visuo-semantic processing (pictures) in adults with ASD and adults with typical development (TD). The ASD group showed successful lexico-semantic and visuo-semantic processing, indicated by similar N400 effects between groups for word and picture stimuli. However, differences in N400 latency and topography in word conditions suggested different lexico-semantic processing mechanisms: an expectancy-based strategy for the TD group but a controlled post-lexical integration strategy for the ASD group. En ligne : http://dx.doi.org/10.1007/s10803-016-2985-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=304 [article] Linguistic and Non-Linguistic Semantic Processing in Individuals with Autism Spectrum Disorders: An ERP Study [texte imprimé] / Emily L. CODERRE, Auteur ; Mariya CHERNENOK, Auteur ; Barry GORDON, Auteur ; Kerry LEDOUX, Auteur . - p.795-812. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 47-3 (March 2017) . - p.795-812 Mots-clés : Autism spectrum disorders  Semantic processing  ERP  Language  Pictures Index. décimale : PER Périodiques Résumé : Individuals with autism spectrum disorders (ASD) experience difficulties with language, particularly higher-level functions like semantic integration. Yet some studies indicate that semantic processing of non-linguistic stimuli is not impaired, suggesting a language-specific deficit in semantic processing. Using a semantic priming task, we compared event-related potentials (ERPs) in response to lexico-semantic processing (written words) and visuo-semantic processing (pictures) in adults with ASD and adults with typical development (TD). The ASD group showed successful lexico-semantic and visuo-semantic processing, indicated by similar N400 effects between groups for word and picture stimuli. However, differences in N400 latency and topography in word conditions suggested different lexico-semantic processing mechanisms: an expectancy-based strategy for the TD group but a controlled post-lexical integration strategy for the ASD group. En ligne : http://dx.doi.org/10.1007/s10803-016-2985-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=304

Tracking the Sensory Environment: An ERP Study of Probability and Context Updating in ASD / Marissa A. WESTERFIELD in Journal of Autism and Developmental Disorders, 45-2 (February 2015)  

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udiovisual speech integration in autism spectrum disorders: ERP evidence for atypicalities in lexical-semantic processing / Odette MEGNIN in Autism Research, 5-1 (February 2012)  

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Alterations in electrophysiological indices of perceptual processing and discrimination are associated with co-occurring emotional and behavioural problems in adolescents with autism spectrum disorder / Virginia CARTER LENO in Molecular Autism, 9 (2018)  

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Assessing the integrity of auditory sensory memory processing in CLN3 disease (Juvenile Neuronal Ceroid Lipofuscinosis (Batten disease)): an auditory evoked potential study of the duration-evoked mismatch negativity (MMN) / Tufikameni BRIMA in Journal of Neurodevelopmental Disorders, 16 (2024)  

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Differences in the Late Positive Potential and P300 to Emotional Faces in Individuals with Autism Spectrum Disorder / Cara M. KEIFER in Journal of Autism and Developmental Disorders, 49-12 (December 2019)  

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