Behavioral and cardiac responses to emotional stroop in adults with autism spectrum disorders: influence of medication / Karen J. MATHEWSON in Autism Research, 4-2 (April 2011)  

Public ISBD [article]  inAutism Research > 4-2 (April 2011) . - p.98-108 Titre : Behavioral and cardiac responses to emotional stroop in adults with autism spectrum disorders: influence of medication Type de document : Texte imprimé et/ou numérique Auteurs : Karen J. MATHEWSON, Auteur ; Irene E. DRMIC, Auteur ; Michelle K. JETHA, Auteur ; Susan E. BRYSON, Auteur ; Joel O. GOLDBERG, Auteur ; Geoffrey B. C. HALL, Auteur ; Diane L. SANTESSO, Auteur ; Sidney SEGALOWITZ, Auteur ; Louis A. SCHMIDT, Auteur Année de publication : 2011 Article en page(s) : p.98-108 Langues : Anglais (eng) Mots-clés : autism spectrum disorders (ASD)  heart period  respiratory sinus arrhythmia (RSA)  Stroop task Index. décimale : PER Périodiques Résumé : Researchers have recently hypothesized that autism spectrum disorders (ASD) may be partly characterized by physiological over-arousal. One way to assess physiological arousal is through autonomic measures. Here heart period (HP) and parasympathetic activity measured by respiratory sinus arrhythmia (RSA) were examined in adults with ASD and matched controls at rest and during performance of an emotional Stroop task. Resting HP and RSA were lower in adults with ASD than in matched controls, consistent with hypothesized over-arousal in ASD. However, dividing the ASD group on the basis of antipsychotic medication usage revealed that group differences in autonomic arousal may be related to the effects of these medications or their correlates. Autonomic adjustments for Stroop performance were comparable across groups, but in the control group, larger RSA reductions were correlated with faster responding (i.e., better performance). This relation was reversed in the unmedicated ASD group and absent in the medicated ASD group. Findings highlight the importance of considering medication status in the recently burgeoning area of psychophysiological studies of autism. En ligne : http://dx.doi.org/10.1002/aur.176 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=121 [article] Behavioral and cardiac responses to emotional stroop in adults with autism spectrum disorders: influence of medication [Texte imprimé et/ou numérique] / Karen J. MATHEWSON, Auteur ; Irene E. DRMIC, Auteur ; Michelle K. JETHA, Auteur ; Susan E. BRYSON, Auteur ; Joel O. GOLDBERG, Auteur ; Geoffrey B. C. HALL, Auteur ; Diane L. SANTESSO, Auteur ; Sidney SEGALOWITZ, Auteur ; Louis A. SCHMIDT, Auteur . - 2011 . - p.98-108. Langues : Anglais (eng) in Autism Research > 4-2 (April 2011) . - p.98-108 Mots-clés : autism spectrum disorders (ASD)  heart period  respiratory sinus arrhythmia (RSA)  Stroop task Index. décimale : PER Périodiques Résumé : Researchers have recently hypothesized that autism spectrum disorders (ASD) may be partly characterized by physiological over-arousal. One way to assess physiological arousal is through autonomic measures. Here heart period (HP) and parasympathetic activity measured by respiratory sinus arrhythmia (RSA) were examined in adults with ASD and matched controls at rest and during performance of an emotional Stroop task. Resting HP and RSA were lower in adults with ASD than in matched controls, consistent with hypothesized over-arousal in ASD. However, dividing the ASD group on the basis of antipsychotic medication usage revealed that group differences in autonomic arousal may be related to the effects of these medications or their correlates. Autonomic adjustments for Stroop performance were comparable across groups, but in the control group, larger RSA reductions were correlated with faster responding (i.e., better performance). This relation was reversed in the unmedicated ASD group and absent in the medicated ASD group. Findings highlight the importance of considering medication status in the recently burgeoning area of psychophysiological studies of autism. En ligne : http://dx.doi.org/10.1002/aur.176 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=121

Neurophysiological mechanisms of emotion regulation for subtypes of externalizing children / Jim STIEBEN in Development and Psychopathology, 19-2 (Spring 2007)  

Public ISBD [article]  inDevelopment and Psychopathology > 19-2 (Spring 2007) . - p.455-480 Titre : Neurophysiological mechanisms of emotion regulation for subtypes of externalizing children Type de document : Texte imprimé et/ou numérique Auteurs : Jim STIEBEN, Auteur ; Marc D. LEWIS, Auteur ; Isabela GRANIC, Auteur ; Philip David ZELAZO, Auteur ; Sidney SEGALOWITZ, Auteur ; Debra PEPLER, Auteur Année de publication : 2007 Article en page(s) : p.455-480 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Children referred for externalizing behavior problems may not represent a homogeneous population. Our objective was to assess neural mechanisms of emotion regulation that might distinguish subtypes of externalizing children from each other and from their normal age mates. Children with pure externalizing (EXT) problems were compared with children comorbid for externalizing and internalizing (MIXED) problems and with age-matched controls. Only boys were included in the analysis because so few girls were referred for treatment. We used a go/no-go task with a negative emotion induction, and we examined dense-array EEG data together with behavioral measures of performance. We investigated two event-related potential (ERP) components tapping inhibitory control or self-monitoring—the inhibitory N2 and error-related negativity (ERN)—and we constructed source models estimating their cortical generators. The MIXED children's N2s increased in response to the emotion induction, resulting in greater amplitudes than EXT children in the following trial block. ERN amplitudes were greatest for control children and smallest for EXT children with MIXED children in between, but only prior to the emotion induction. These results were paralleled by behavioral differences in response time and performance monitoring. ERP activity was localized to cortical sources suggestive of the dorsal anterior cingulate for control children, posterior cingulate areas for the EXT children, and both posterior cingulate and ventral cingulate/prefrontal regions for the MIXED children. These findings highlight different mechanisms of self-regulation underlying externalizing subtypes and point toward distinct developmental pathways and treatment strategies. En ligne : http://dx.doi.org/10.1017/s0954579407070228 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=104 [article] Neurophysiological mechanisms of emotion regulation for subtypes of externalizing children [Texte imprimé et/ou numérique] / Jim STIEBEN, Auteur ; Marc D. LEWIS, Auteur ; Isabela GRANIC, Auteur ; Philip David ZELAZO, Auteur ; Sidney SEGALOWITZ, Auteur ; Debra PEPLER, Auteur . - 2007 . - p.455-480. Langues : Anglais (eng) in Development and Psychopathology > 19-2 (Spring 2007) . - p.455-480 Index. décimale : PER Périodiques Résumé : Children referred for externalizing behavior problems may not represent a homogeneous population. Our objective was to assess neural mechanisms of emotion regulation that might distinguish subtypes of externalizing children from each other and from their normal age mates. Children with pure externalizing (EXT) problems were compared with children comorbid for externalizing and internalizing (MIXED) problems and with age-matched controls. Only boys were included in the analysis because so few girls were referred for treatment. We used a go/no-go task with a negative emotion induction, and we examined dense-array EEG data together with behavioral measures of performance. We investigated two event-related potential (ERP) components tapping inhibitory control or self-monitoring—the inhibitory N2 and error-related negativity (ERN)—and we constructed source models estimating their cortical generators. The MIXED children's N2s increased in response to the emotion induction, resulting in greater amplitudes than EXT children in the following trial block. ERN amplitudes were greatest for control children and smallest for EXT children with MIXED children in between, but only prior to the emotion induction. These results were paralleled by behavioral differences in response time and performance monitoring. ERP activity was localized to cortical sources suggestive of the dorsal anterior cingulate for control children, posterior cingulate areas for the EXT children, and both posterior cingulate and ventral cingulate/prefrontal regions for the MIXED children. These findings highlight different mechanisms of self-regulation underlying externalizing subtypes and point toward distinct developmental pathways and treatment strategies. En ligne : http://dx.doi.org/10.1017/s0954579407070228 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=104

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