Alpha modulation during working memory encoding predicts neurocognitive impairment in ADHD / A. LENARTOWICZ in Journal of Child Psychology and Psychiatry, 60-8 (August 2019)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 60-8 (August 2019) . - p.917-926 Titre : Alpha modulation during working memory encoding predicts neurocognitive impairment in ADHD Type de document : Texte imprimé et/ou numérique Auteurs : A. LENARTOWICZ, Auteur ; H. TRUONG, Auteur ; G. C. SALGARI, Auteur ; R. M. BILDER, Auteur ; J. MCGOUGH, Auteur ; J. T. MCCRACKEN, Auteur ; S. K. LOO, Auteur Article en page(s) : p.917-926 Langues : Anglais (eng) Mots-clés : Adhd  Eeg  academic achievement  alpha oscillations  maintenance  visual attention  working memory Index. décimale : PER Périodiques Résumé : BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) is associated with working memory (WM) deficits. However, WM is a multiprocess construct that can be impaired through several pathways, leaving the source of WM impairments in ADHD unresolved. In this study, we aim to replicate, in an independent sample, previously reported deficits in component processes of WM deficits in ADHD and expand to consider their implications for neurocognitive outcomes. METHODS: In 119 children (7-14 years old, 85 with ADHD), we used electroencephalography measures to quantify component processes during performance of a spatial working memory task. We quantified stimulus encoding using alpha range (8-12 Hz) power; vigilance by the P2 event-related potential to cues; and WMmaintenance by occipital-alpha and frontal-theta (4-7 Hz) power. These measures were evaluated against metrics of executive function, ADHD symptoms, and academic achievement. RESULTS: Encoding alpha-power decreases and cue P2 amplitude were attenuated in ADHD, whereas occipital-alpha power during maintenance was significantly greater in ADHD, consistent with a compensatory response to weak encoding. Weak alpha modulation during encoding was associated with poorer reading comprehension and executive function, as well as enhanced ADHD symptoms. Previously reported effects in frontal-theta power failed to replicate. CONCLUSIONS: Stimulus encoding, a component process of WM coupled to alpha modulation, is impaired in ADHD, and, unlike WM maintenance or vigilance processes, has implications outside of the laboratory via a relationship with executive function, and, to a weaker extent, reading comprehension. En ligne : http://dx.doi.org/10.1111/jcpp.13042 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=404 [article] Alpha modulation during working memory encoding predicts neurocognitive impairment in ADHD [Texte imprimé et/ou numérique] / A. LENARTOWICZ, Auteur ; H. TRUONG, Auteur ; G. C. SALGARI, Auteur ; R. M. BILDER, Auteur ; J. MCGOUGH, Auteur ; J. T. MCCRACKEN, Auteur ; S. K. LOO, Auteur . - p.917-926. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 60-8 (August 2019) . - p.917-926 Mots-clés : Adhd  Eeg  academic achievement  alpha oscillations  maintenance  visual attention  working memory Index. décimale : PER Périodiques Résumé : BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) is associated with working memory (WM) deficits. However, WM is a multiprocess construct that can be impaired through several pathways, leaving the source of WM impairments in ADHD unresolved. In this study, we aim to replicate, in an independent sample, previously reported deficits in component processes of WM deficits in ADHD and expand to consider their implications for neurocognitive outcomes. METHODS: In 119 children (7-14 years old, 85 with ADHD), we used electroencephalography measures to quantify component processes during performance of a spatial working memory task. We quantified stimulus encoding using alpha range (8-12 Hz) power; vigilance by the P2 event-related potential to cues; and WMmaintenance by occipital-alpha and frontal-theta (4-7 Hz) power. These measures were evaluated against metrics of executive function, ADHD symptoms, and academic achievement. RESULTS: Encoding alpha-power decreases and cue P2 amplitude were attenuated in ADHD, whereas occipital-alpha power during maintenance was significantly greater in ADHD, consistent with a compensatory response to weak encoding. Weak alpha modulation during encoding was associated with poorer reading comprehension and executive function, as well as enhanced ADHD symptoms. Previously reported effects in frontal-theta power failed to replicate. CONCLUSIONS: Stimulus encoding, a component process of WM coupled to alpha modulation, is impaired in ADHD, and, unlike WM maintenance or vigilance processes, has implications outside of the laboratory via a relationship with executive function, and, to a weaker extent, reading comprehension. En ligne : http://dx.doi.org/10.1111/jcpp.13042 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=404

Cognitive control processes in behavior therapy for youth with Tourette's disorder / J. F. MCGUIRE in Journal of Child Psychology and Psychiatry, 63-3 (March 2022)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 63-3 (March 2022) . - p.296-304 Titre : Cognitive control processes in behavior therapy for youth with Tourette's disorder Type de document : Texte imprimé et/ou numérique Auteurs : J. F. MCGUIRE, Auteur ; A. STURM, Auteur ; E. J. RICKETTS, Auteur ; G. E. MONTALBANO, Auteur ; S. CHANG, Auteur ; S. K. LOO, Auteur ; D. W. WOODS, Auteur ; J. MCCRACKEN, Auteur ; J. PIACENTINI, Auteur Article en page(s) : p.296-304 Langues : Anglais (eng) Mots-clés : Cognitive control  behavior therapy  inhibition  inhibitory control  tic suppression Index. décimale : PER Périodiques Résumé : BACKGROUND: Cognitive control processes are implicated in the behavioral treatment of Tourette's disorder (TD). However, the influence of these processes on treatment outcomes has received minimal attention. This study examined whether cognitive control processes and/or tic suppression predicted reductions in tic severity and treatment response to behavior therapy. METHOD: Fifty-three youth with TD or a pervasive tic disorder participated in a randomized wait list-controlled trial of behavior therapy. Following a baseline assessment to evaluate psychiatric diagnoses, tic severity, and cognitive control processes (e.g., response selection, inhibition, and suppression), youth were randomly assigned to receive eight sessions of behavior therapy (n?=?23) or a wait list of equal duration (n?=?28). Youth receiving immediate treatment completed a post-treatment assessment to determine improvement in tic severity. Meanwhile, youth in the wait list condition completed another assessment to re-evaluate tic severity and cognitive control processes, and subsequently received 8 sessions of behavior therapy followed by a post-treatment assessment to determine improvement. RESULTS: A multiple linear regression model found that pretreatment inhibition/switching on the Delis-Kaplan Executive Function System Color-Word Interference Test predicted reductions in tic severity after behavior therapy (??=?-.36, t?=?-2.35, p?=?.025, ?(2) ?=?.15). However, other cognitive control processes and tic suppression did not predict treatment response and/or reductions in tic severity. Small nonsignificant effects were observed in cognitive control processes after behavior therapy. CONCLUSION: Cognitive control processes may influence tic severity reductions in behavior therapy. Notably, even when other cognitive control processes are impaired and youth are initially unable to voluntarily suppress their tics, youth with TD can still benefit from behavior therapy. Findings offer implications for clinical practice and research for TD. En ligne : http://dx.doi.org/10.1111/jcpp.13470 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=457 [article] Cognitive control processes in behavior therapy for youth with Tourette's disorder [Texte imprimé et/ou numérique] / J. F. MCGUIRE, Auteur ; A. STURM, Auteur ; E. J. RICKETTS, Auteur ; G. E. MONTALBANO, Auteur ; S. CHANG, Auteur ; S. K. LOO, Auteur ; D. W. WOODS, Auteur ; J. MCCRACKEN, Auteur ; J. PIACENTINI, Auteur . - p.296-304. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 63-3 (March 2022) . - p.296-304 Mots-clés : Cognitive control  behavior therapy  inhibition  inhibitory control  tic suppression Index. décimale : PER Périodiques Résumé : BACKGROUND: Cognitive control processes are implicated in the behavioral treatment of Tourette's disorder (TD). However, the influence of these processes on treatment outcomes has received minimal attention. This study examined whether cognitive control processes and/or tic suppression predicted reductions in tic severity and treatment response to behavior therapy. METHOD: Fifty-three youth with TD or a pervasive tic disorder participated in a randomized wait list-controlled trial of behavior therapy. Following a baseline assessment to evaluate psychiatric diagnoses, tic severity, and cognitive control processes (e.g., response selection, inhibition, and suppression), youth were randomly assigned to receive eight sessions of behavior therapy (n?=?23) or a wait list of equal duration (n?=?28). Youth receiving immediate treatment completed a post-treatment assessment to determine improvement in tic severity. Meanwhile, youth in the wait list condition completed another assessment to re-evaluate tic severity and cognitive control processes, and subsequently received 8 sessions of behavior therapy followed by a post-treatment assessment to determine improvement. RESULTS: A multiple linear regression model found that pretreatment inhibition/switching on the Delis-Kaplan Executive Function System Color-Word Interference Test predicted reductions in tic severity after behavior therapy (??=?-.36, t?=?-2.35, p?=?.025, ?(2) ?=?.15). However, other cognitive control processes and tic suppression did not predict treatment response and/or reductions in tic severity. Small nonsignificant effects were observed in cognitive control processes after behavior therapy. CONCLUSION: Cognitive control processes may influence tic severity reductions in behavior therapy. Notably, even when other cognitive control processes are impaired and youth are initially unable to voluntarily suppress their tics, youth with TD can still benefit from behavior therapy. Findings offer implications for clinical practice and research for TD. En ligne : http://dx.doi.org/10.1111/jcpp.13470 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=457

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