Brief Report: Early VEPs to Pattern-Reversal in Adolescents and Adults with Autism / K. KOVARSKI in Journal of Autism and Developmental Disorders, 46-10 (October 2016)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 46-10 (October 2016) . - p.3377-3386 Titre : Brief Report: Early VEPs to Pattern-Reversal in Adolescents and Adults with Autism Type de document : Texte imprimé et/ou numérique Auteurs : K. KOVARSKI, Auteur ; A. THILLAY, Auteur ; Emmanuelle HOUY-DURAND, Auteur ; S. ROUX, Auteur ; Aurélie BIDET-CAULET, Auteur ; Frédérique BONNET-BRILHAULT, Auteur ; Magali BATTY, Auteur Article en page(s) : p.3377-3386 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Visual evoked potentials  Pattern-reversal paradigm  Sensory symptoms Index. décimale : PER Périodiques Résumé : Autism spectrum disorder (ASD) is characterized by atypical visual perception both in the social and nonsocial domain. In order to measure a reliable visual response, visual evoked potentials were recorded during a passive pattern-reversal stimulation in adolescents and adults with and without ASD. While the present results show the same age-related changes in both autistic and non-autistic groups, they reveal a smaller P100 amplitude in the ASD group compared to controls. These results confirm that early visual responses are affected in ASD even with a simple, non social and passive stimulation and suggest that they should be considered in order to better understand higher-level processes. En ligne : http://dx.doi.org/10.1007/s10803-016-2880-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=293 [article] Brief Report: Early VEPs to Pattern-Reversal in Adolescents and Adults with Autism [Texte imprimé et/ou numérique] / K. KOVARSKI, Auteur ; A. THILLAY, Auteur ; Emmanuelle HOUY-DURAND, Auteur ; S. ROUX, Auteur ; Aurélie BIDET-CAULET, Auteur ; Frédérique BONNET-BRILHAULT, Auteur ; Magali BATTY, Auteur . - p.3377-3386. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 46-10 (October 2016) . - p.3377-3386 Mots-clés : Autism spectrum disorder  Visual evoked potentials  Pattern-reversal paradigm  Sensory symptoms Index. décimale : PER Périodiques Résumé : Autism spectrum disorder (ASD) is characterized by atypical visual perception both in the social and nonsocial domain. In order to measure a reliable visual response, visual evoked potentials were recorded during a passive pattern-reversal stimulation in adolescents and adults with and without ASD. While the present results show the same age-related changes in both autistic and non-autistic groups, they reveal a smaller P100 amplitude in the ASD group compared to controls. These results confirm that early visual responses are affected in ASD even with a simple, non social and passive stimulation and suggest that they should be considered in order to better understand higher-level processes. En ligne : http://dx.doi.org/10.1007/s10803-016-2880-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=293

Emotional prosodic change detection in autism Spectrum disorder: an electrophysiological investigation in children and adults / J. CHARPENTIER in Journal of Neurodevelopmental Disorders, 10-1 (December 2018)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 10-1 (December 2018) . - 28 p. Titre : Emotional prosodic change detection in autism Spectrum disorder: an electrophysiological investigation in children and adults Type de document : Texte imprimé et/ou numérique Auteurs : J. CHARPENTIER, Auteur ; K. KOVARSKI, Auteur ; Emmanuelle HOUY-DURAND, Auteur ; J. MALVY, Auteur ; A. SABY, Auteur ; Frédérique BONNET-BRILHAULT, Auteur ; Marianne LATINUS, Auteur ; Marie GOMOT, Auteur Année de publication : 2018 Article en page(s) : 28 p. Langues : Anglais (eng) Mots-clés : Adults  Autism spectrum disorder  Change detection  Children  Eeg  Emotion  Mismatch negativity (MMN)  Prosody Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism spectrum disorder (ASD) is characterized by atypical behaviors in social environments and in reaction to changing events. While this dyad of symptoms is at the core of the pathology along with atypical sensory behaviors, most studies have investigated only one dimension. A focus on the sameness dimension has shown that intolerance to change is related to an atypical pre-attentional detection of irregularity. In the present study, we addressed the same process in response to emotional change in order to evaluate the interplay between alterations of change detection and socio-emotional processing in children and adults with autism. METHODS: Brain responses to neutral and emotional prosodic deviancies (mismatch negativity (MMN) and P3a, reflecting change detection and orientation of attention toward change, respectively) were recorded in children and adults with autism and in controls. Comparison of neutral and emotional conditions allowed distinguishing between general deviancy and emotional deviancy effects. Moreover, brain responses to the same neutral and emotional stimuli were recorded when they were not deviants to evaluate the sensory processing of these vocal stimuli. RESULTS: In controls, change detection was modulated by prosody: in children, this was characterized by a lateralization of emotional MMN to the right hemisphere, and in adults, by an earlier MMN for emotional deviancy than for neutral deviancy. In ASD, an overall atypical change detection was observed with an earlier MMN and a larger P3a compared to controls suggesting an unusual pre-attentional orientation toward any changes in the auditory environment. Moreover, in children with autism, deviancy detection depicted reduced MMN amplitude. In addition in children with autism, contrary to adults with autism, no modulation of the MMN by prosody was present and sensory processing of both neutral and emotional vocal stimuli appeared atypical. CONCLUSIONS: Overall, change detection remains altered in people with autism. However, differences between children and adults with ASD evidence a trend toward normalization of vocal processing and of the automatic detection of emotion deviancy with age. En ligne : http://dx.doi.org/10.1186/s11689-018-9246-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=386 [article] Emotional prosodic change detection in autism Spectrum disorder: an electrophysiological investigation in children and adults [Texte imprimé et/ou numérique] / J. CHARPENTIER, Auteur ; K. KOVARSKI, Auteur ; Emmanuelle HOUY-DURAND, Auteur ; J. MALVY, Auteur ; A. SABY, Auteur ; Frédérique BONNET-BRILHAULT, Auteur ; Marianne LATINUS, Auteur ; Marie GOMOT, Auteur . - 2018 . - 28 p. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 10-1 (December 2018) . - 28 p. Mots-clés : Adults  Autism spectrum disorder  Change detection  Children  Eeg  Emotion  Mismatch negativity (MMN)  Prosody Index. décimale : PER Périodiques Résumé : BACKGROUND: Autism spectrum disorder (ASD) is characterized by atypical behaviors in social environments and in reaction to changing events. While this dyad of symptoms is at the core of the pathology along with atypical sensory behaviors, most studies have investigated only one dimension. A focus on the sameness dimension has shown that intolerance to change is related to an atypical pre-attentional detection of irregularity. In the present study, we addressed the same process in response to emotional change in order to evaluate the interplay between alterations of change detection and socio-emotional processing in children and adults with autism. METHODS: Brain responses to neutral and emotional prosodic deviancies (mismatch negativity (MMN) and P3a, reflecting change detection and orientation of attention toward change, respectively) were recorded in children and adults with autism and in controls. Comparison of neutral and emotional conditions allowed distinguishing between general deviancy and emotional deviancy effects. Moreover, brain responses to the same neutral and emotional stimuli were recorded when they were not deviants to evaluate the sensory processing of these vocal stimuli. RESULTS: In controls, change detection was modulated by prosody: in children, this was characterized by a lateralization of emotional MMN to the right hemisphere, and in adults, by an earlier MMN for emotional deviancy than for neutral deviancy. In ASD, an overall atypical change detection was observed with an earlier MMN and a larger P3a compared to controls suggesting an unusual pre-attentional orientation toward any changes in the auditory environment. Moreover, in children with autism, deviancy detection depicted reduced MMN amplitude. In addition in children with autism, contrary to adults with autism, no modulation of the MMN by prosody was present and sensory processing of both neutral and emotional vocal stimuli appeared atypical. CONCLUSIONS: Overall, change detection remains altered in people with autism. However, differences between children and adults with ASD evidence a trend toward normalization of vocal processing and of the automatic detection of emotion deviancy with age. En ligne : http://dx.doi.org/10.1186/s11689-018-9246-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=386

Enhanced Early Visual Responses During Implicit Emotional Faces Processing in Autism Spectrum Disorder / K. KOVARSKI 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.871-886 Titre : Enhanced Early Visual Responses During Implicit Emotional Faces Processing in Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : K. KOVARSKI, Auteur ; R. MENNELLA, Auteur ; S. M. WONG, Auteur ; B. T. DUNKLEY, Auteur ; M. J. TAYLOR, Auteur ; Magali BATTY, Auteur Article en page(s) : p.871-886 Langues : Anglais (eng) Mots-clés : Autism  Emotion  Face processing  Meg  Visual processing Index. décimale : PER Périodiques Résumé : Research on Autism Spectrum Disorder (ASD) has focused on processing of socially-relevant stimuli, such as faces. Nonetheless, before being 'social', faces are visual stimuli. The present magnetoencephalography study investigated the time course of brain activity during an implicit emotional task in visual emotion-related regions in 19 adults with ASD (mean age 26.3 +/- 4.4) and 19 typically developed controls (26.4 +/- 4). The results confirmed previously-reported differences between groups in brain responses to emotion and a hypo-activation in the ASD group in the right fusiform gyrus around 150 ms. However, the ASD group also presented early enhanced activity in the occipital region. These results support that impaired face processing in ASD might be sustained by atypical responses in primary visual areas. En ligne : http://dx.doi.org/10.1007/s10803-018-3787-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=386 [article] Enhanced Early Visual Responses During Implicit Emotional Faces Processing in Autism Spectrum Disorder [Texte imprimé et/ou numérique] / K. KOVARSKI, Auteur ; R. MENNELLA, Auteur ; S. M. WONG, Auteur ; B. T. DUNKLEY, Auteur ; M. J. TAYLOR, Auteur ; Magali BATTY, Auteur . - p.871-886. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 49-3 (March 2019) . - p.871-886 Mots-clés : Autism  Emotion  Face processing  Meg  Visual processing Index. décimale : PER Périodiques Résumé : Research on Autism Spectrum Disorder (ASD) has focused on processing of socially-relevant stimuli, such as faces. Nonetheless, before being 'social', faces are visual stimuli. The present magnetoencephalography study investigated the time course of brain activity during an implicit emotional task in visual emotion-related regions in 19 adults with ASD (mean age 26.3 +/- 4.4) and 19 typically developed controls (26.4 +/- 4). The results confirmed previously-reported differences between groups in brain responses to emotion and a hypo-activation in the ASD group in the right fusiform gyrus around 150 ms. However, the ASD group also presented early enhanced activity in the occipital region. These results support that impaired face processing in ASD might be sustained by atypical responses in primary visual areas. En ligne : http://dx.doi.org/10.1007/s10803-018-3787-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=386

Faster eye movements in children with autism spectrum disorder / K. KOVARSKI in Autism Research, 12-2 (February 2019)  

Public ISBD [article]  inAutism Research > 12-2 (February 2019) . - p.212-224 Titre : Faster eye movements in children with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : K. KOVARSKI, Auteur ; M. SIWIASZCZYK, Auteur ; J. MALVY, Auteur ; Magali BATTY, Auteur ; Marianne LATINUS, Auteur Article en page(s) : p.212-224 Langues : Anglais (eng) Mots-clés : autism  children  oculomotor functioning  saccadic eye movements  visual perception Index. décimale : PER Périodiques Résumé : Atypical visual exploration of both social and nonsocial scenes is often reported in Autism Spectrum Disorder (ASD) with less precise and longer saccades, potentially reflecting difficulties in oculomotor control. To assess a subset of oculomotor functions in ASD, 20 children with ASD and 21 age-matched typically developing (TD) children (2.6-11.5 years) partook in three tasks of increasing complexity, while no explicit instruction was provided: a prosaccade gap task, a color and a "categorical" visual search tasks (a face among butterflies and vice-versa). In addition to classical saccade metrics, we measured Distance error, (the distance between the target and the closest gaze position) and Time-to-target (the time taken to reach the target). In the prosaccade task, children with ASD were as accurate as TD children, yet faster to reach the stimulus. In the color visual search task, children with ASD were faster but less precise than TD children. In the categorical visual search, while TD children were more precise in orienting their gaze towards the face, children with ASD performed similarly in the two conditions; Time-to-target did not differ. Our results provide contradictory evidence regarding enhanced visual search ability in ASD: when considering response times, enhanced visual search performance was found in one task only, while when considering gaze precision no advantage was found. These three experiments demonstrate that the automatic saccadic system may function more rapidly in children with ASD. Nonetheless, a diminished sensitivity to bottom-up saliency and top-down influence might suppress this advantage in more complex visual environments. Autism Res 2019, 12: 212-224 (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: Three experiments with no instructions were designed to assess oculomotor functions in children with Autism Spectrum Disorder (ASD). In a saccade task, children with ASD were faster than but as accurate as control children. In visual search tasks, accuracy and speed decreased with increasing complexity of visual environment. Children with ASD showed faster automatic visual orientation, but this might hinder exploratory behaviors, leading to difficulties in complex and social situations. En ligne : http://dx.doi.org/10.1002/aur.2054 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=383 [article] Faster eye movements in children with autism spectrum disorder [Texte imprimé et/ou numérique] / K. KOVARSKI, Auteur ; M. SIWIASZCZYK, Auteur ; J. MALVY, Auteur ; Magali BATTY, Auteur ; Marianne LATINUS, Auteur . - p.212-224. Langues : Anglais (eng) in Autism Research > 12-2 (February 2019) . - p.212-224 Mots-clés : autism  children  oculomotor functioning  saccadic eye movements  visual perception Index. décimale : PER Périodiques Résumé : Atypical visual exploration of both social and nonsocial scenes is often reported in Autism Spectrum Disorder (ASD) with less precise and longer saccades, potentially reflecting difficulties in oculomotor control. To assess a subset of oculomotor functions in ASD, 20 children with ASD and 21 age-matched typically developing (TD) children (2.6-11.5 years) partook in three tasks of increasing complexity, while no explicit instruction was provided: a prosaccade gap task, a color and a "categorical" visual search tasks (a face among butterflies and vice-versa). In addition to classical saccade metrics, we measured Distance error, (the distance between the target and the closest gaze position) and Time-to-target (the time taken to reach the target). In the prosaccade task, children with ASD were as accurate as TD children, yet faster to reach the stimulus. In the color visual search task, children with ASD were faster but less precise than TD children. In the categorical visual search, while TD children were more precise in orienting their gaze towards the face, children with ASD performed similarly in the two conditions; Time-to-target did not differ. Our results provide contradictory evidence regarding enhanced visual search ability in ASD: when considering response times, enhanced visual search performance was found in one task only, while when considering gaze precision no advantage was found. These three experiments demonstrate that the automatic saccadic system may function more rapidly in children with ASD. Nonetheless, a diminished sensitivity to bottom-up saliency and top-down influence might suppress this advantage in more complex visual environments. Autism Res 2019, 12: 212-224 (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: Three experiments with no instructions were designed to assess oculomotor functions in children with Autism Spectrum Disorder (ASD). In a saccade task, children with ASD were faster than but as accurate as control children. In visual search tasks, accuracy and speed decreased with increasing complexity of visual environment. Children with ASD showed faster automatic visual orientation, but this might hinder exploratory behaviors, leading to difficulties in complex and social situations. En ligne : http://dx.doi.org/10.1002/aur.2054 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=383

Trustworthiness and Dominance Personality Traits' Judgments in Adults with Autism Spectrum Disorder / A. LATIMIER in Journal of Autism and Developmental Disorders, 49-11 (November 2019)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 49-11 (November 2019) . - p.4535-4546 Titre : Trustworthiness and Dominance Personality Traits' Judgments in Adults with Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : A. LATIMIER, Auteur ; K. KOVARSKI, Auteur ; H. PEYRE, Auteur ; L. G. FERNANDEZ, Auteur ; D. GRAS, Auteur ; M. LEBOYER, Auteur ; T. ZALLA, Auteur Article en page(s) : p.4535-4546 Langues : Anglais (eng) Mots-clés : Asd  Eye-tracking  Face processing  Personality traits Index. décimale : PER Périodiques Résumé : Autism Spectrum Disorder (ASD) is characterized by impairments in social functioning, communication, and by the presence of repetitive behaviours and restricted interests. Abnormal processing of faces has also been described as a neuropsychological feature of ASD. We investigated the ability to judge two personality traits in adults with ASD in comparison to typically developed adults (TD). We used an eye tracking device to investigate the exploration of faces when participants judged the degree of trustworthiness and dominance of synthetic faces. In sum, we found that adults with ASD were as capable as TD adults to judge personality traits of face trustworthiness and dominance, which relied on similar exploration of the synthetic faces in the two populations. En ligne : http://dx.doi.org/10.1007/s10803-019-04163-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=408 [article] Trustworthiness and Dominance Personality Traits' Judgments in Adults with Autism Spectrum Disorder [Texte imprimé et/ou numérique] / A. LATIMIER, Auteur ; K. KOVARSKI, Auteur ; H. PEYRE, Auteur ; L. G. FERNANDEZ, Auteur ; D. GRAS, Auteur ; M. LEBOYER, Auteur ; T. ZALLA, Auteur . - p.4535-4546. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 49-11 (November 2019) . - p.4535-4546 Mots-clés : Asd  Eye-tracking  Face processing  Personality traits Index. décimale : PER Périodiques Résumé : Autism Spectrum Disorder (ASD) is characterized by impairments in social functioning, communication, and by the presence of repetitive behaviours and restricted interests. Abnormal processing of faces has also been described as a neuropsychological feature of ASD. We investigated the ability to judge two personality traits in adults with ASD in comparison to typically developed adults (TD). We used an eye tracking device to investigate the exploration of faces when participants judged the degree of trustworthiness and dominance of synthetic faces. In sum, we found that adults with ASD were as capable as TD adults to judge personality traits of face trustworthiness and dominance, which relied on similar exploration of the synthetic faces in the two populations. En ligne : http://dx.doi.org/10.1007/s10803-019-04163-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=408

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