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Abnormal coherence and sleep composition in children with Angelman syndrome: a retrospective EEG study / H. DEN BAKKER in Molecular Autism, 9 (2018)
[article]
Titre : Abnormal coherence and sleep composition in children with Angelman syndrome: a retrospective EEG study Type de document : Texte imprimé et/ou numérique Auteurs : H. DEN BAKKER, Auteur ; M. S. SIDOROV, Auteur ; Z. FAN, Auteur ; D. J. LEE, Auteur ; L. M. BIRD, Auteur ; C. J. CHU, Auteur ; B. D. PHILPOT, Auteur Article en page(s) : 32p. Langues : Anglais (eng) Mots-clés : Angelman Syndrome/physiopathology Case-Control Studies Child Delta Rhythm Female Gamma Rhythm Humans Male Sleep Stages Angelman syndrome Biomarker Coherence eeg Spindles UBE3A Index. décimale : PER Périodiques Résumé : Background: Angelman syndrome (AS) is a neurodevelopmental disorder characterized by intellectual disability, speech and motor impairments, epilepsy, abnormal sleep, and phenotypic overlap with autism. Individuals with AS display characteristic EEG patterns including high-amplitude rhythmic delta waves. Here, we sought to quantitatively explore EEG architecture in AS beyond known spectral power phenotypes. We were motivated by studies of functional connectivity and sleep spindles in autism to study these EEG readouts in children with AS. Methods: We analyzed retrospective wake and sleep EEGs from children with AS (age 4-11) and age-matched neurotypical controls. We assessed long-range and short-range functional connectivity by measuring coherence across multiple frequencies during wake and sleep. We quantified sleep spindles using automated and manual approaches. Results: During wakefulness, children with AS showed enhanced long-range EEG coherence across a wide range of frequencies. During sleep, children with AS showed increased long-range EEG coherence specifically in the gamma band. EEGs from children with AS contained fewer sleep spindles, and these spindles were shorter in duration than their neurotypical counterparts. Conclusions: We demonstrate two quantitative readouts of dysregulated sleep composition in children with AS-gamma coherence and spindles-and describe how functional connectivity patterns may be disrupted during wakefulness. Quantitative EEG phenotypes have potential as biomarkers and readouts of target engagement for future clinical trials and provide clues into how neural circuits are dysregulated in children with AS. En ligne : https://dx.doi.org/10.1186/s13229-018-0214-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=371
in Molecular Autism > 9 (2018) . - 32p.[article] Abnormal coherence and sleep composition in children with Angelman syndrome: a retrospective EEG study [Texte imprimé et/ou numérique] / H. DEN BAKKER, Auteur ; M. S. SIDOROV, Auteur ; Z. FAN, Auteur ; D. J. LEE, Auteur ; L. M. BIRD, Auteur ; C. J. CHU, Auteur ; B. D. PHILPOT, Auteur . - 32p.
Langues : Anglais (eng)
in Molecular Autism > 9 (2018) . - 32p.
Mots-clés : Angelman Syndrome/physiopathology Case-Control Studies Child Delta Rhythm Female Gamma Rhythm Humans Male Sleep Stages Angelman syndrome Biomarker Coherence eeg Spindles UBE3A Index. décimale : PER Périodiques Résumé : Background: Angelman syndrome (AS) is a neurodevelopmental disorder characterized by intellectual disability, speech and motor impairments, epilepsy, abnormal sleep, and phenotypic overlap with autism. Individuals with AS display characteristic EEG patterns including high-amplitude rhythmic delta waves. Here, we sought to quantitatively explore EEG architecture in AS beyond known spectral power phenotypes. We were motivated by studies of functional connectivity and sleep spindles in autism to study these EEG readouts in children with AS. Methods: We analyzed retrospective wake and sleep EEGs from children with AS (age 4-11) and age-matched neurotypical controls. We assessed long-range and short-range functional connectivity by measuring coherence across multiple frequencies during wake and sleep. We quantified sleep spindles using automated and manual approaches. Results: During wakefulness, children with AS showed enhanced long-range EEG coherence across a wide range of frequencies. During sleep, children with AS showed increased long-range EEG coherence specifically in the gamma band. EEGs from children with AS contained fewer sleep spindles, and these spindles were shorter in duration than their neurotypical counterparts. Conclusions: We demonstrate two quantitative readouts of dysregulated sleep composition in children with AS-gamma coherence and spindles-and describe how functional connectivity patterns may be disrupted during wakefulness. Quantitative EEG phenotypes have potential as biomarkers and readouts of target engagement for future clinical trials and provide clues into how neural circuits are dysregulated in children with AS. En ligne : https://dx.doi.org/10.1186/s13229-018-0214-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=371 Assessing 'coherence' in the spoken narrative accounts of autistic people: A systematic scoping review / Anna HARVEY in Research in Autism Spectrum Disorders, 102 (April 2023)
[article]
Titre : Assessing 'coherence' in the spoken narrative accounts of autistic people: A systematic scoping review Type de document : Texte imprimé et/ou numérique Auteurs : Anna HARVEY, Auteur ; Helen SPICER-CAIN, Auteur ; Nicola BOTTING, Auteur ; Gemma RYAN, Auteur ; Lucy HENRY, Auteur Article en page(s) : p.102108 Langues : Anglais (eng) Mots-clés : Autism Narrative Coherence Macrostructure Story grammar Index. décimale : PER Périodiques Résumé : Background The ability to produce a well-structured, coherent narrative account is essential for successful everyday communication. Research suggests that autistic people may find this challenging, and that narrative assessment can reveal pragmatic difficulties in this population that are missed on sentence-level tasks. Previous studies have used different methodologies to assess spoken narrative skills in autism. This review systematically examined these approaches and considered their utility for assessing narrative coherence. Method Keyword database searches were conducted, with records screened by two independent reviewers. Eligible studies (n = 59) included specified frameworks for evaluating structure/coherence in spoken narrative accounts by autistic participants of any age. Studies were categorised according to the type of narrative scoring scheme used, and strengths and limitations were considered. Results Over 80% of included articles reported observational cross-sectional studies, with participants generally matched on age and cognitive ability with non-autistic comparison groups. The most common approaches involved coding key elements of narrative structure ('story grammar') or scoring the inclusion of pre-determined 'main events'. Alternative frameworks included 'holistic' rating scales and subjective quality judgements by listeners. Some studies focused specifically on 'coherence', measuring diverse aspects such as causal connectedness and incongruence. Scoring criteria varied for each type of framework. Conclusions Findings indicated that solely assessing story structure ignores important features contributing to the coherence of spoken narrative accounts. Recommendations are that future research consider the following elements: (1) context, (2) chronology, (3) causality, (4) congruence, (5) characters (cognition/emotion), and (6) cohesion; and scoring methods should include rating scales to obtain sufficiently detailed information about narrative quality. En ligne : https://doi.org/10.1016/j.rasd.2023.102108 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=501
in Research in Autism Spectrum Disorders > 102 (April 2023) . - p.102108[article] Assessing 'coherence' in the spoken narrative accounts of autistic people: A systematic scoping review [Texte imprimé et/ou numérique] / Anna HARVEY, Auteur ; Helen SPICER-CAIN, Auteur ; Nicola BOTTING, Auteur ; Gemma RYAN, Auteur ; Lucy HENRY, Auteur . - p.102108.
Langues : Anglais (eng)
in Research in Autism Spectrum Disorders > 102 (April 2023) . - p.102108
Mots-clés : Autism Narrative Coherence Macrostructure Story grammar Index. décimale : PER Périodiques Résumé : Background The ability to produce a well-structured, coherent narrative account is essential for successful everyday communication. Research suggests that autistic people may find this challenging, and that narrative assessment can reveal pragmatic difficulties in this population that are missed on sentence-level tasks. Previous studies have used different methodologies to assess spoken narrative skills in autism. This review systematically examined these approaches and considered their utility for assessing narrative coherence. Method Keyword database searches were conducted, with records screened by two independent reviewers. Eligible studies (n = 59) included specified frameworks for evaluating structure/coherence in spoken narrative accounts by autistic participants of any age. Studies were categorised according to the type of narrative scoring scheme used, and strengths and limitations were considered. Results Over 80% of included articles reported observational cross-sectional studies, with participants generally matched on age and cognitive ability with non-autistic comparison groups. The most common approaches involved coding key elements of narrative structure ('story grammar') or scoring the inclusion of pre-determined 'main events'. Alternative frameworks included 'holistic' rating scales and subjective quality judgements by listeners. Some studies focused specifically on 'coherence', measuring diverse aspects such as causal connectedness and incongruence. Scoring criteria varied for each type of framework. Conclusions Findings indicated that solely assessing story structure ignores important features contributing to the coherence of spoken narrative accounts. Recommendations are that future research consider the following elements: (1) context, (2) chronology, (3) causality, (4) congruence, (5) characters (cognition/emotion), and (6) cohesion; and scoring methods should include rating scales to obtain sufficiently detailed information about narrative quality. En ligne : https://doi.org/10.1016/j.rasd.2023.102108 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=501 Changes in Electroencephalogram Coherence in Adolescents With Autism Spectrum Disorder After a Social Skills Intervention / Angela D. HAENDEL in Autism Research, 14-4 (April 2021)
[article]
Titre : Changes in Electroencephalogram Coherence in Adolescents With Autism Spectrum Disorder After a Social Skills Intervention Type de document : Texte imprimé et/ou numérique Auteurs : Angela D. HAENDEL, Auteur ; Alexander BARRINGTON, Auteur ; Brooke MAGNUS, Auteur ; Alexis A. ARIAS, Auteur ; Alana MCVEY, Auteur ; Sheryl PLEISS, Auteur ; Audrey M. CARSON, Auteur ; Elisabeth M. VOGT, Auteur ; Amy VAUGHAN VAN HECKE, Auteur Article en page(s) : p.787-803 Langues : Anglais (eng) Mots-clés : Eeg Peers® autism coherence electroencephalogram social skill intervention Index. décimale : PER Périodiques Résumé : Autism spectrum disorder (ASD) is a developmental condition that affects social communication and behavior. There is consensus that neurological differences are present in ASD. Further, theories emphasize the mixture of hypo- and hyper-connectivity as a neuropathologies in ASD [O'Reilly, Lewis, & Elsabbagh, 2017]; however, there is a paucity of studies specifically testing neurological underpinnings as predictors of success on social skills interventions. This study examined functional neural connectivity (electroencephalogram [EEG], coherence) of adolescents with ASD before and after the Program for the Education and Enrichment of Relational Skills (PEERS®) intervention, using a randomized controlled trial of two groups: an Experimental ASD (EXP) Group and a Waitlist Control ASD (WL) Group. The study had two purposes. First, the study aimed to determine whether changes in EEG coherence differed for adolescents that received PEERS® versus those that did not receive PEERS®. Results revealed a significant increase in connectivity in the occipital left to temporal left pair for the EXP group after intervention. Second, the study aimed to determine if changes in EEG coherence related to changes in behavior, friendships, and social skills measured by questionnaires. At post-intervention, results indicated: (a) positive change in frontal right to parietal right coherence was linked to an increase in social skills scores; and (b) positive changes in occipital right to temporal right coherence and occipital left to parietal left coherence were linked to an increase in the total number of get-togethers. Results of this study support utilizing neurobehavioral domains as indicators of treatment outcome. Lay Summary: This study examined how well various areas of the brain communicate in adolescents with ASD before and after a social skills intervention. Results revealed increased connectivity in the adolescents that received the intervention. Secondly, the study aimed to determine if changes in connectivity of brain areas related to changes in behavior, friendships, and social skills. Results indicated that changes in connectivity were also linked to increased social skills. Autism Res 2021, 14: 787-803. © 2021 International Society for Autism Research and Wiley Periodicals LLC. En ligne : http://dx.doi.org/10.1002/aur.2459 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=444
in Autism Research > 14-4 (April 2021) . - p.787-803[article] Changes in Electroencephalogram Coherence in Adolescents With Autism Spectrum Disorder After a Social Skills Intervention [Texte imprimé et/ou numérique] / Angela D. HAENDEL, Auteur ; Alexander BARRINGTON, Auteur ; Brooke MAGNUS, Auteur ; Alexis A. ARIAS, Auteur ; Alana MCVEY, Auteur ; Sheryl PLEISS, Auteur ; Audrey M. CARSON, Auteur ; Elisabeth M. VOGT, Auteur ; Amy VAUGHAN VAN HECKE, Auteur . - p.787-803.
Langues : Anglais (eng)
in Autism Research > 14-4 (April 2021) . - p.787-803
Mots-clés : Eeg Peers® autism coherence electroencephalogram social skill intervention Index. décimale : PER Périodiques Résumé : Autism spectrum disorder (ASD) is a developmental condition that affects social communication and behavior. There is consensus that neurological differences are present in ASD. Further, theories emphasize the mixture of hypo- and hyper-connectivity as a neuropathologies in ASD [O'Reilly, Lewis, & Elsabbagh, 2017]; however, there is a paucity of studies specifically testing neurological underpinnings as predictors of success on social skills interventions. This study examined functional neural connectivity (electroencephalogram [EEG], coherence) of adolescents with ASD before and after the Program for the Education and Enrichment of Relational Skills (PEERS®) intervention, using a randomized controlled trial of two groups: an Experimental ASD (EXP) Group and a Waitlist Control ASD (WL) Group. The study had two purposes. First, the study aimed to determine whether changes in EEG coherence differed for adolescents that received PEERS® versus those that did not receive PEERS®. Results revealed a significant increase in connectivity in the occipital left to temporal left pair for the EXP group after intervention. Second, the study aimed to determine if changes in EEG coherence related to changes in behavior, friendships, and social skills measured by questionnaires. At post-intervention, results indicated: (a) positive change in frontal right to parietal right coherence was linked to an increase in social skills scores; and (b) positive changes in occipital right to temporal right coherence and occipital left to parietal left coherence were linked to an increase in the total number of get-togethers. Results of this study support utilizing neurobehavioral domains as indicators of treatment outcome. Lay Summary: This study examined how well various areas of the brain communicate in adolescents with ASD before and after a social skills intervention. Results revealed increased connectivity in the adolescents that received the intervention. Secondly, the study aimed to determine if changes in connectivity of brain areas related to changes in behavior, friendships, and social skills. Results indicated that changes in connectivity were also linked to increased social skills. Autism Res 2021, 14: 787-803. © 2021 International Society for Autism Research and Wiley Periodicals LLC. En ligne : http://dx.doi.org/10.1002/aur.2459 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=444
[article]
Titre : The coherence of autism Type de document : Texte imprimé et/ou numérique Auteurs : R. Peter HOBSON, Auteur Article en page(s) : p.6-16 Langues : Anglais (eng) Mots-clés : Autism blindness coherence fractionation identification intersubjectivity syndrome; Index. décimale : PER Périodiques Résumé : There is a growing body of opinion that we should view autism as fractionable into different, largely independent sets of clinical features. The alternative view is that autism is a coherent syndrome in which principal features of the disorder stand in intimate developmental relationship with each other. Studies of congenitally blind children offer support for the latter position and suggest that a source of coherence in autism is restriction in certain forms of perceptually dependent social experience. En ligne : http://dx.doi.org/10.1177/1362361313497538 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=221
in Autism > 18-1 (January 2014) . - p.6-16[article] The coherence of autism [Texte imprimé et/ou numérique] / R. Peter HOBSON, Auteur . - p.6-16.
Langues : Anglais (eng)
in Autism > 18-1 (January 2014) . - p.6-16
Mots-clés : Autism blindness coherence fractionation identification intersubjectivity syndrome; Index. décimale : PER Périodiques Résumé : There is a growing body of opinion that we should view autism as fractionable into different, largely independent sets of clinical features. The alternative view is that autism is a coherent syndrome in which principal features of the disorder stand in intimate developmental relationship with each other. Studies of congenitally blind children offer support for the latter position and suggest that a source of coherence in autism is restriction in certain forms of perceptually dependent social experience. En ligne : http://dx.doi.org/10.1177/1362361313497538 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=221 Altered right frontal cortical connectivity during facial emotion recognition in children with autism spectrum disorders / Michael K. YEUNG in Research in Autism Spectrum Disorders, 8-11 (November 2014)
[article]
Titre : Altered right frontal cortical connectivity during facial emotion recognition in children with autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : Michael K. YEUNG, Auteur ; Yvonne M. Y. HAN, Auteur ; Sophia L. SZE, Auteur ; Agnes S. CHAN, Auteur Article en page(s) : p.1567-1577 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders Facial emotion Social Connectivity Theta Coherence Index. décimale : PER Périodiques Résumé : A growing body of evidence suggests that autism spectrum disorders (ASD) is associated with altered functional connectivity of the brain and with impairment in recognizing others’ emotions. To better understand the relationships among these neural and behavioral abnormalities, we examined cortical connectivity which was indicated by theta coherence during tasks of facial emotion recognition in 18 children with ASD and 18 typically developing (TD) children who were between 6 and 18 years of age. We found that the children with ASD had general impairment in recognizing facial emotions, after controlling for response bias. Additionally, we found that the TD children demonstrated significant modulation of right frontal theta coherence in response to emotional faces compared to neutral faces, whereas children with ASD did not exhibit any modulation of theta coherence. The extent of modulation of theta coherence to emotions was further found to be related to the severity of social impairments in ASD. Our findings of a general impairment in facial emotion recognition and the involvement of disordered cortical connectivity in social deficits in children with ASD have shed light for future exploration of interventions regarding emotional processing and social functioning in ASD. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.08.013 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=241
in Research in Autism Spectrum Disorders > 8-11 (November 2014) . - p.1567-1577[article] Altered right frontal cortical connectivity during facial emotion recognition in children with autism spectrum disorders [Texte imprimé et/ou numérique] / Michael K. YEUNG, Auteur ; Yvonne M. Y. HAN, Auteur ; Sophia L. SZE, Auteur ; Agnes S. CHAN, Auteur . - p.1567-1577.
Langues : Anglais (eng)
in Research in Autism Spectrum Disorders > 8-11 (November 2014) . - p.1567-1577
Mots-clés : Autism spectrum disorders Facial emotion Social Connectivity Theta Coherence Index. décimale : PER Périodiques Résumé : A growing body of evidence suggests that autism spectrum disorders (ASD) is associated with altered functional connectivity of the brain and with impairment in recognizing others’ emotions. To better understand the relationships among these neural and behavioral abnormalities, we examined cortical connectivity which was indicated by theta coherence during tasks of facial emotion recognition in 18 children with ASD and 18 typically developing (TD) children who were between 6 and 18 years of age. We found that the children with ASD had general impairment in recognizing facial emotions, after controlling for response bias. Additionally, we found that the TD children demonstrated significant modulation of right frontal theta coherence in response to emotional faces compared to neutral faces, whereas children with ASD did not exhibit any modulation of theta coherence. The extent of modulation of theta coherence to emotions was further found to be related to the severity of social impairments in ASD. Our findings of a general impairment in facial emotion recognition and the involvement of disordered cortical connectivity in social deficits in children with ASD have shed light for future exploration of interventions regarding emotional processing and social functioning in ASD. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.08.013 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=241 Autistic Spectrum Disorder: What Video EEG Can Reveal about Its Pathophysiology / Vilem NOVAK in Autism - Open Access, 8-4 ([01/10/2018])
PermalinkName recognition in autism: EEG evidence of altered patterns of brain activity and connectivity / A. NOWICKA in Molecular Autism, 7 (2016)
PermalinkNeural synchrony examined with magnetoencephalography (MEG) during eye gaze processing in autism spectrum disorders: preliminary findings / R. LAJINESS-O'NEILL in Journal of Neurodevelopmental Disorders, 6-1 (December 2014)
PermalinkPatterns of altered neural synchrony in the default mode network in autism spectrum disorder revealed with magnetoencephalography (MEG): Relationship to clinical symptomatology / R. LAJINESS-O'NEILL in Autism Research, 11-3 (March 2018)
PermalinkRight Anterior Theta Hypersynchrony as a Quantitative Measure Associated with Autistic Traits and K-Cl Cotransporter KCC2 Polymorphism / S. AYKAN in Journal of Autism and Developmental Disorders, 52-1 (January 2022)
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