Audiovisual speech integration in pervasive developmental disorder: evidence from event-related potentials / Maurice J.C.M. MAGNEE in Journal of Child Psychology and Psychiatry, 49-9 (September 2008)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 49-9 (September 2008) . - p.995-1000 Titre : Audiovisual speech integration in pervasive developmental disorder: evidence from event-related potentials Type de document : Texte imprimé et/ou numérique Auteurs : Maurice J.C.M. MAGNEE, Auteur ; Herman VAN ENGELAND, Auteur ; Béatrice DE GELDER, Auteur ; Chantal KEMNER, Auteur Année de publication : 2008 Article en page(s) : p.995-1000 Langues : Anglais (eng) Mots-clés : Multisensory-integration language-and-communication autism EEG visual auditory Index. décimale : PER Périodiques Résumé : Background: Integration of information from multiple sensory sources is an important prerequisite for successful social behavior, especially during face-to-face conversation. It has been suggested that communicative impairments among individuals with pervasive developmental disorders (PDD) might be caused by an inability to integrate synchronously presented visual and auditory cues. Method: We investigated audiovisual integration of speech stimuli among a group of high-functioning adult PDD individuals and age- and IQ-matched controls using electroencephalography, measuring both early pre-phonological, as well as late phonologically driven integration. Results: Pre-phonological AV interactions are intact, while AV interactions corresponding to more complex phonological processes are impaired in individuals with PDD. Conclusions: The present findings argue for a pattern of impairments on tasks related to complex audiovisual integration combined with relative sparing of low-level integrational abilities. This combination may very well contribute to the communicative disabilities which are typical for the disorder. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2008.01902.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=559 [article] Audiovisual speech integration in pervasive developmental disorder: evidence from event-related potentials [Texte imprimé et/ou numérique] / Maurice J.C.M. MAGNEE, Auteur ; Herman VAN ENGELAND, Auteur ; Béatrice DE GELDER, Auteur ; Chantal KEMNER, Auteur . - 2008 . - p.995-1000. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 49-9 (September 2008) . - p.995-1000 Mots-clés : Multisensory-integration language-and-communication autism EEG visual auditory Index. décimale : PER Périodiques Résumé : Background: Integration of information from multiple sensory sources is an important prerequisite for successful social behavior, especially during face-to-face conversation. It has been suggested that communicative impairments among individuals with pervasive developmental disorders (PDD) might be caused by an inability to integrate synchronously presented visual and auditory cues. Method: We investigated audiovisual integration of speech stimuli among a group of high-functioning adult PDD individuals and age- and IQ-matched controls using electroencephalography, measuring both early pre-phonological, as well as late phonologically driven integration. Results: Pre-phonological AV interactions are intact, while AV interactions corresponding to more complex phonological processes are impaired in individuals with PDD. Conclusions: The present findings argue for a pattern of impairments on tasks related to complex audiovisual integration combined with relative sparing of low-level integrational abilities. This combination may very well contribute to the communicative disabilities which are typical for the disorder. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2008.01902.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=559

Brief Report: Can You See What is Not There? Low-level Auditory–visual Integration in Autism Spectrum Disorder / Maarten J. VAN DER SMAGT in Journal of Autism and Developmental Disorders, 37-10 (November 2007)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 37-10 (November 2007) . - p.2014-2019 Titre : Brief Report: Can You See What is Not There? Low-level Auditory–visual Integration in Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Maarten J. VAN DER SMAGT, Auteur ; Herman VAN ENGELAND, Auteur ; Chantal KEMNER, Auteur Année de publication : 2007 Article en page(s) : p.2014-2019 Langues : Anglais (eng) Mots-clés : Autism High-functioning Cross-modal-integration Visual-perception Auditory-perception Illusions Index. décimale : PER Périodiques Résumé : Patients diagnosed with Autism Spectrum Disorder, show impaired integration of information across different senses. The processing-level from which this impairment originates, however, remains unclear. We investigated low-level integration of auditory and visual stimuli in subjects with Autism Spectrum Disorder. High-functioning adult subjects with Autism Spectrum Disorder as well as age- and IQ-matched adults were tested using a task that evokes illusory visual stimuli, by presenting sounds concurrently with visual flashes. In both groups the number of sounds presented significantly affected the number of flashes perceived, yet there was no difference between groups. This finding implicates that any problems arising from integrating auditory and visual information must stem from higher processing stages in high-functioning adults with Autism Spectrum Disorder. En ligne : http://dx.doi.org/10.1007/s10803-006-0346-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=220 [article] Brief Report: Can You See What is Not There? Low-level Auditory–visual Integration in Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Maarten J. VAN DER SMAGT, Auteur ; Herman VAN ENGELAND, Auteur ; Chantal KEMNER, Auteur . - 2007 . - p.2014-2019. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 37-10 (November 2007) . - p.2014-2019 Mots-clés : Autism High-functioning Cross-modal-integration Visual-perception Auditory-perception Illusions Index. décimale : PER Périodiques Résumé : Patients diagnosed with Autism Spectrum Disorder, show impaired integration of information across different senses. The processing-level from which this impairment originates, however, remains unclear. We investigated low-level integration of auditory and visual stimuli in subjects with Autism Spectrum Disorder. High-functioning adult subjects with Autism Spectrum Disorder as well as age- and IQ-matched adults were tested using a task that evokes illusory visual stimuli, by presenting sounds concurrently with visual flashes. In both groups the number of sounds presented significantly affected the number of flashes perceived, yet there was no difference between groups. This finding implicates that any problems arising from integrating auditory and visual information must stem from higher processing stages in high-functioning adults with Autism Spectrum Disorder. En ligne : http://dx.doi.org/10.1007/s10803-006-0346-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=220

Brief Report: Eye Movements During Visual Search Tasks Indicate Enhanced Stimulus Discriminability in Subjects with PDD / Chantal KEMNER in Journal of Autism and Developmental Disorders, 38-3 (March 2008)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 38-3 (March 2008) . - p.553-557 Titre : Brief Report: Eye Movements During Visual Search Tasks Indicate Enhanced Stimulus Discriminability in Subjects with PDD Type de document : Texte imprimé et/ou numérique Auteurs : Chantal KEMNER, Auteur ; Lizet VAN EWIJK, Auteur Année de publication : 2008 Article en page(s) : p.553-557 Langues : Anglais (eng) Mots-clés : Search-task Perception Eye-movement Eye-fixation PDD Index. décimale : PER Périodiques Résumé : Subjects with PDD excel on certain visuo-spatial tasks, amongst which visual search tasks, and this has been attributed to enhanced perceptual discrimination. However, an alternative explanation is that subjects with PDD show a different, more effective search strategy. The present study aimed to test both hypotheses, by measuring eye movements during visual search tasks in high functioning adult men with PDD and a control group. Subjects with PDD were significantly faster than controls in these tasks, replicating earlier findings in children. Eye movement data showed that subjects with PDD made fewer eye movements than controls. No evidence was found for a different search strategy between the groups. The data indicate an enhanced ability to discriminate between stimulus elements in PDD. En ligne : http://dx.doi.org/10.1007/s10803-007-0406-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=335 [article] Brief Report: Eye Movements During Visual Search Tasks Indicate Enhanced Stimulus Discriminability in Subjects with PDD [Texte imprimé et/ou numérique] / Chantal KEMNER, Auteur ; Lizet VAN EWIJK, Auteur . - 2008 . - p.553-557. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 38-3 (March 2008) . - p.553-557 Mots-clés : Search-task Perception Eye-movement Eye-fixation PDD Index. décimale : PER Périodiques Résumé : Subjects with PDD excel on certain visuo-spatial tasks, amongst which visual search tasks, and this has been attributed to enhanced perceptual discrimination. However, an alternative explanation is that subjects with PDD show a different, more effective search strategy. The present study aimed to test both hypotheses, by measuring eye movements during visual search tasks in high functioning adult men with PDD and a control group. Subjects with PDD were significantly faster than controls in these tasks, replicating earlier findings in children. Eye movement data showed that subjects with PDD made fewer eye movements than controls. No evidence was found for a different search strategy between the groups. The data indicate an enhanced ability to discriminate between stimulus elements in PDD. En ligne : http://dx.doi.org/10.1007/s10803-007-0406-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=335

Facial electromyographic responses to emotional information from faces and voices in individuals with pervasive developmental disorder / Maurice J.C.M. MAGNEE in Journal of Child Psychology and Psychiatry, 48-11 (November 2007)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 48-11 (November 2007) . - p.1122–1130 Titre : Facial electromyographic responses to emotional information from faces and voices in individuals with pervasive developmental disorder Type de document : Texte imprimé et/ou numérique Auteurs : Maurice J.C.M. MAGNEE, Auteur ; Herman VAN ENGELAND, Auteur ; Béatrice DE GELDER, Auteur ; Chantal KEMNER, Auteur Année de publication : 2007 Article en page(s) : p.1122–1130 Langues : Anglais (eng) Mots-clés : Autism emotional-processing facial-expressions voice-prosody electromyography-(EMG) multisensory-perception Index. décimale : PER Périodiques Résumé : Despite extensive research, it is still debated whether impairments in social skills of individuals with pervasive developmental disorder (PDD) are related to specific deficits in the early processing of emotional information. We aimed to test both automatic processing of facial affect as well as the integration of auditory and visual emotion cues in individuals with PDD. Methods: In a group of high-functioning adult individuals with PDD and an age- and IQ-matched control group, we measured facial electromyography (EMG) following presentation of visual emotion stimuli (facial expressions) as well as the presentation of audiovisual emotion pairs (faces plus voices). This emotionally driven EMG activity is considered to be a direct correlate of automatic affect processing that is not under intentional control. Results: Our data clearly indicate that among individuals with PDD facial EMG activity is heightened in response to happy and fearful faces, and intact in response to audiovisual affective information. Conclusions: This study provides evidence for enhanced sensitivity to facial cues at the level of reflex-like emotional responses in individuals with PDD. Furthermore, the findings argue against impairments in crossmodal affect processing at this level of perception. However, given how little comparative work has been done in the area of multisensory perception, there is certainly need for further exploration. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2007.01779.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=297 [article] Facial electromyographic responses to emotional information from faces and voices in individuals with pervasive developmental disorder [Texte imprimé et/ou numérique] / Maurice J.C.M. MAGNEE, Auteur ; Herman VAN ENGELAND, Auteur ; Béatrice DE GELDER, Auteur ; Chantal KEMNER, Auteur . - 2007 . - p.1122–1130. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 48-11 (November 2007) . - p.1122–1130 Mots-clés : Autism emotional-processing facial-expressions voice-prosody electromyography-(EMG) multisensory-perception Index. décimale : PER Périodiques Résumé : Despite extensive research, it is still debated whether impairments in social skills of individuals with pervasive developmental disorder (PDD) are related to specific deficits in the early processing of emotional information. We aimed to test both automatic processing of facial affect as well as the integration of auditory and visual emotion cues in individuals with PDD. Methods: In a group of high-functioning adult individuals with PDD and an age- and IQ-matched control group, we measured facial electromyography (EMG) following presentation of visual emotion stimuli (facial expressions) as well as the presentation of audiovisual emotion pairs (faces plus voices). This emotionally driven EMG activity is considered to be a direct correlate of automatic affect processing that is not under intentional control. Results: Our data clearly indicate that among individuals with PDD facial EMG activity is heightened in response to happy and fearful faces, and intact in response to audiovisual affective information. Conclusions: This study provides evidence for enhanced sensitivity to facial cues at the level of reflex-like emotional responses in individuals with PDD. Furthermore, the findings argue against impairments in crossmodal affect processing at this level of perception. However, given how little comparative work has been done in the area of multisensory perception, there is certainly need for further exploration. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2007.01779.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=297

Involuntary interpretation of social cues is compromised in autism spectrum disorders / Tjeerd JELLEMA in Autism Research, 2-4 (August 2009)  

Public ISBD [article]  inAutism Research > 2-4 (August 2009) . - p.192-204 Titre : Involuntary interpretation of social cues is compromised in autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : Tjeerd JELLEMA, Auteur ; Herman VAN ENGELAND, Auteur ; Chantal KEMNER, Auteur ; Sophie VAN RIJN, Auteur ; Jeannette LORTEIJE, Auteur ; Mascha VAN T'WOUT, Auteur ; Edward DE HAAN, Auteur Année de publication : 2009 Article en page(s) : p.192-204 Langues : Anglais (eng) Mots-clés : social-cognition visual-illusion involuntary-processing social-attention implied-motion Index. décimale : PER Périodiques Résumé : A new social distance judgment task was used to measure quantitatively the extent to which social cues are immediately and involuntary interpreted by typically developing (TD) individuals and by individuals with autism spectrum disorders (ASD). The task thus tapped into the ability to involuntary pick up the meaning of social cues. The cues tested were social attention and implied biological motion. Task performance of the ASD and TD groups was similarly affected by a perceptual low-level illusion induced by physical characteristics of the stimuli. In contrast, a high-level illusion induced by the implications of the social cues affected only the TD individuals; the ASD individuals remained unaffected (causing them to perform superior to TD controls). The results indicate that despite intact perceptual processing, the immediate involuntary interpretation of social cues can be compromised. We propose that this type of social cue understanding is a distinct process that should be differentiated from reflective social cue understanding and is specifically compromised in ASD. We discuss evidence for an underpinning neural substrate. En ligne : http://dx.doi.org/10.1002/aur.83 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=937 [article] Involuntary interpretation of social cues is compromised in autism spectrum disorders [Texte imprimé et/ou numérique] / Tjeerd JELLEMA, Auteur ; Herman VAN ENGELAND, Auteur ; Chantal KEMNER, Auteur ; Sophie VAN RIJN, Auteur ; Jeannette LORTEIJE, Auteur ; Mascha VAN T'WOUT, Auteur ; Edward DE HAAN, Auteur . - 2009 . - p.192-204. Langues : Anglais (eng) in Autism Research > 2-4 (August 2009) . - p.192-204 Mots-clés : social-cognition visual-illusion involuntary-processing social-attention implied-motion Index. décimale : PER Périodiques Résumé : A new social distance judgment task was used to measure quantitatively the extent to which social cues are immediately and involuntary interpreted by typically developing (TD) individuals and by individuals with autism spectrum disorders (ASD). The task thus tapped into the ability to involuntary pick up the meaning of social cues. The cues tested were social attention and implied biological motion. Task performance of the ASD and TD groups was similarly affected by a perceptual low-level illusion induced by physical characteristics of the stimuli. In contrast, a high-level illusion induced by the implications of the social cues affected only the TD individuals; the ASD individuals remained unaffected (causing them to perform superior to TD controls). The results indicate that despite intact perceptual processing, the immediate involuntary interpretation of social cues can be compromised. We propose that this type of social cue understanding is a distinct process that should be differentiated from reflective social cue understanding and is specifically compromised in ASD. We discuss evidence for an underpinning neural substrate. En ligne : http://dx.doi.org/10.1002/aur.83 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=937

Is It Fear? Similar Brain Responses to Fearful and Neutral Faces in Infants with a Heightened Likelihood for Autism Spectrum Disorder / Renata DI LORENZO in Journal of Autism and Developmental Disorders, 51-3 (March 2021)  

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Is There a Limit to the Superiority of Individuals with ASD in Visual Search? / Roy S. HESSELS in Journal of Autism and Developmental Disorders, 44-2 (February 2014)  

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New Interview and Observation Measures of the Broader Autism Phenotype: Group Differentiation / Maretha DE JONGE in Journal of Autism and Developmental Disorders, 45-4 (April 2015)  

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