Centre d'Information et de documentation du CRA Rhône-Alpes
CRA
Informations pratiques
-
Adresse
Centre d'information et de documentation
du CRA Rhône-Alpes
Centre Hospitalier le Vinatier
bât 211
95, Bd Pinel
69678 Bron CedexHoraires
Lundi au Vendredi
9h00-12h00 13h30-16h00Contact
Tél: +33(0)4 37 91 54 65
Mail
Fax: +33(0)4 37 91 54 37
-
Résultat de la recherche
2 recherche sur le mot-clé 'oscillations'
Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche Faire une suggestion
Resting-State Oscillatory Activity in Autism Spectrum Disorders / Lauren CORNEW in Journal of Autism and Developmental Disorders, 42-9 (September 2012)
[article]
Titre : Resting-State Oscillatory Activity in Autism Spectrum Disorders Type de document : Texte imprimé et/ou numérique Auteurs : Lauren CORNEW, Auteur ; Timothy P.L. ROBERTS, Auteur ; Lisa BLASKEY, Auteur ; J. Christopher EDGAR, Auteur Année de publication : 2012 Article en page(s) : p.1884-1894 Langues : Anglais (eng) Mots-clés : Autism Magnetoencephalography Resting-state Oscillations Alpha Gamma Index. décimale : PER Périodiques Résumé : Neural oscillatory anomalies in autism spectrum disorders (ASD) suggest an excitatory/inhibitory imbalance; however, the nature and clinical relevance of these anomalies are unclear. Whole-cortex magnetoencephalography data were collected while 50 children (27 with ASD, 23 controls) underwent an eyes-closed resting-state exam. A Fast Fourier Transform was applied and oscillatory activity examined from 1 to 120 Hz at 15 regional sources. Associations between oscillatory anomalies and symptom severity were probed. Children with ASD exhibited regionally specific elevations in delta (1–4 Hz), theta (4–8 Hz), alpha (8–12 Hz), and high frequency (20–120 Hz) power, supporting an imbalance of neural excitation/inhibition as a neurobiological feature of ASD. Increased temporal and parietal alpha power was associated with greater symptom severity and thus is of particular interest. En ligne : http://dx.doi.org/10.1007/s10803-011-1431-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=180
in Journal of Autism and Developmental Disorders > 42-9 (September 2012) . - p.1884-1894[article] Resting-State Oscillatory Activity in Autism Spectrum Disorders [Texte imprimé et/ou numérique] / Lauren CORNEW, Auteur ; Timothy P.L. ROBERTS, Auteur ; Lisa BLASKEY, Auteur ; J. Christopher EDGAR, Auteur . - 2012 . - p.1884-1894.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 42-9 (September 2012) . - p.1884-1894
Mots-clés : Autism Magnetoencephalography Resting-state Oscillations Alpha Gamma Index. décimale : PER Périodiques Résumé : Neural oscillatory anomalies in autism spectrum disorders (ASD) suggest an excitatory/inhibitory imbalance; however, the nature and clinical relevance of these anomalies are unclear. Whole-cortex magnetoencephalography data were collected while 50 children (27 with ASD, 23 controls) underwent an eyes-closed resting-state exam. A Fast Fourier Transform was applied and oscillatory activity examined from 1 to 120 Hz at 15 regional sources. Associations between oscillatory anomalies and symptom severity were probed. Children with ASD exhibited regionally specific elevations in delta (1–4 Hz), theta (4–8 Hz), alpha (8–12 Hz), and high frequency (20–120 Hz) power, supporting an imbalance of neural excitation/inhibition as a neurobiological feature of ASD. Increased temporal and parietal alpha power was associated with greater symptom severity and thus is of particular interest. En ligne : http://dx.doi.org/10.1007/s10803-011-1431-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=180 Susceptibility to Distraction in Autism Spectrum Disorder: Probing the Integrity of Oscillatory Alpha-Band Suppression Mechanisms / Jeremy W. MURPHY in Autism Research, 7-4 (August 2014)
[article]
Titre : Susceptibility to Distraction in Autism Spectrum Disorder: Probing the Integrity of Oscillatory Alpha-Band Suppression Mechanisms Type de document : Texte imprimé et/ou numérique Auteurs : Jeremy W. MURPHY, Auteur ; John J. FOXE, Auteur ; Joanna B. PETERS, Auteur ; Sophie MOLHOLM, Auteur Année de publication : 2014 Article en page(s) : p.442-458 Langues : Anglais (eng) Mots-clés : autism EEG oscillations attention Index. décimale : PER Périodiques Résumé : When attention is directed to one information stream over another, the brain can be configured in advance to selectively process the relevant stream and suppress potentially distracting inputs. One key mechanism of suppression is through the deployment of anticipatory alpha-band (?10?Hz) oscillatory activity, with greater alpha-band power observed in cortical regions that will ultimately process the distracting stream. Atypical attention has been implicated in autism spectrum disorder (ASD), including greater interference by distracting task-irrelevant inputs. Here we tested the integrity of these alpha-band mechanisms in ASD using an intersensory attention task. Electroencephalography (EEG) was recorded while participants were cued on a trial-by-trial basis to selectively deploy attention to the visual or auditory modality in anticipation of a target within the cued modality. Whereas typically developing (TD) children showed the predicted alpha-band modulation, with increased alpha-band power over parieto-occipital scalp when attention was deployed to the auditory compared with the visual modality, this differential pattern was entirely absent at the group level in the ASD cohort. Further, only the ASD group showed impaired performance due to the presence of task-irrelevant sensory information. These data suggest that impaired modulation of alpha-band activity plays a role in increased distraction from extraneous sensory inputs in ASD. En ligne : http://dx.doi.org/10.1002/aur.1374 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=238
in Autism Research > 7-4 (August 2014) . - p.442-458[article] Susceptibility to Distraction in Autism Spectrum Disorder: Probing the Integrity of Oscillatory Alpha-Band Suppression Mechanisms [Texte imprimé et/ou numérique] / Jeremy W. MURPHY, Auteur ; John J. FOXE, Auteur ; Joanna B. PETERS, Auteur ; Sophie MOLHOLM, Auteur . - 2014 . - p.442-458.
Langues : Anglais (eng)
in Autism Research > 7-4 (August 2014) . - p.442-458
Mots-clés : autism EEG oscillations attention Index. décimale : PER Périodiques Résumé : When attention is directed to one information stream over another, the brain can be configured in advance to selectively process the relevant stream and suppress potentially distracting inputs. One key mechanism of suppression is through the deployment of anticipatory alpha-band (?10?Hz) oscillatory activity, with greater alpha-band power observed in cortical regions that will ultimately process the distracting stream. Atypical attention has been implicated in autism spectrum disorder (ASD), including greater interference by distracting task-irrelevant inputs. Here we tested the integrity of these alpha-band mechanisms in ASD using an intersensory attention task. Electroencephalography (EEG) was recorded while participants were cued on a trial-by-trial basis to selectively deploy attention to the visual or auditory modality in anticipation of a target within the cued modality. Whereas typically developing (TD) children showed the predicted alpha-band modulation, with increased alpha-band power over parieto-occipital scalp when attention was deployed to the auditory compared with the visual modality, this differential pattern was entirely absent at the group level in the ASD cohort. Further, only the ASD group showed impaired performance due to the presence of task-irrelevant sensory information. These data suggest that impaired modulation of alpha-band activity plays a role in increased distraction from extraneous sensory inputs in ASD. En ligne : http://dx.doi.org/10.1002/aur.1374 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=238