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
6 recherche sur le mot-clé 'EEG coherence'
Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche Faire une suggestion
Brief Report: Reduced Temporal-Central EEG Alpha Coherence During Joint Attention Perception in Adolescents with Autism Spectrum Disorder / Mark JAIME in Journal of Autism and Developmental Disorders, 46-4 (April 2016)
[article]
Titre : Brief Report: Reduced Temporal-Central EEG Alpha Coherence During Joint Attention Perception in Adolescents with Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Mark JAIME, Auteur ; Camilla M. MCMAHON, Auteur ; Bridget C. DAVIDSON, Auteur ; Lisa C. NEWELL, Auteur ; Peter C. MUNDY, Auteur ; Heather A. HENDERSON, Auteur Article en page(s) : p.1477-1489 Langues : Anglais (eng) Mots-clés : EEG coherence Joint attention Brain connectivity Cortical connectivity Joint attention network connectivity Neurocognitive features of joint attention in ASD Adolescents with ASD Adolescent autistic brain Index. décimale : PER Périodiques Résumé : Although prior studies have demonstrated reduced resting state EEG coherence in adults with autism spectrum disorder (ASD), no studies have explored the nature of EEG coherence during joint attention. We examined the EEG coherence of the joint attention network in adolescents with and without ASD during congruent and incongruent joint attention perception and an eyes-open resting condition. Across conditions, adolescents with ASD showed reduced right hemisphere temporal–central alpha coherence compared to typically developing adolescents. Greater right temporal–central alpha coherence during joint attention was positively associated with social cognitive performance in typical development but not in ASD. These results suggest that, in addition to a resting state, EEG coherence during joint attention perception is reduced in ASD. En ligne : http://dx.doi.org/10.1007/s10803-015-2667-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=284
in Journal of Autism and Developmental Disorders > 46-4 (April 2016) . - p.1477-1489[article] Brief Report: Reduced Temporal-Central EEG Alpha Coherence During Joint Attention Perception in Adolescents with Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Mark JAIME, Auteur ; Camilla M. MCMAHON, Auteur ; Bridget C. DAVIDSON, Auteur ; Lisa C. NEWELL, Auteur ; Peter C. MUNDY, Auteur ; Heather A. HENDERSON, Auteur . - p.1477-1489.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 46-4 (April 2016) . - p.1477-1489
Mots-clés : EEG coherence Joint attention Brain connectivity Cortical connectivity Joint attention network connectivity Neurocognitive features of joint attention in ASD Adolescents with ASD Adolescent autistic brain Index. décimale : PER Périodiques Résumé : Although prior studies have demonstrated reduced resting state EEG coherence in adults with autism spectrum disorder (ASD), no studies have explored the nature of EEG coherence during joint attention. We examined the EEG coherence of the joint attention network in adolescents with and without ASD during congruent and incongruent joint attention perception and an eyes-open resting condition. Across conditions, adolescents with ASD showed reduced right hemisphere temporal–central alpha coherence compared to typically developing adolescents. Greater right temporal–central alpha coherence during joint attention was positively associated with social cognitive performance in typical development but not in ASD. These results suggest that, in addition to a resting state, EEG coherence during joint attention perception is reduced in ASD. En ligne : http://dx.doi.org/10.1007/s10803-015-2667-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=284 Enhanced connectivity between visual cortex and other regions of the brain in autism: a REM sleep EEG coherence study / Cathy LEVEILLE in Autism Research, 3-5 (October 2010)
[article]
Titre : Enhanced connectivity between visual cortex and other regions of the brain in autism: a REM sleep EEG coherence study Type de document : Texte imprimé et/ou numérique Auteurs : Cathy LEVEILLE, Auteur ; Elise B. BARBEAU, Auteur ; Christianne BOLDUC, Auteur ; Elyse LIMOGES, Auteur ; Claude BERTHIAUME, Auteur ; Elyse CHEVRIER, Auteur ; Laurent MOTTRON, Auteur ; Roger GODBOUT, Auteur Année de publication : 2010 Article en page(s) : p.280-285 Langues : Anglais (eng) Mots-clés : autism occipital cortex REM sleep EEG EEG coherence visual perception neural coupling Index. décimale : PER Périodiques Résumé : Functional interregional neural coupling was measured as EEG coherence during REM sleep, a state of endogenous cortical activation, in 9 adult autistic individuals (21.1±4.0 years) and 13 typically developed controls (21.5±4.3 years) monitored for two consecutive nights in a sleep laboratory. Spectral analysis was performed on 60 s of artefact-free EEG samples distributed equally throughout the first four REM sleep periods of the second night. EEG coherence was calculated for six frequency bands (delta, theta, alpha, sigma, beta, and total spectrum) using a 22-electrode montage. The magnitude of coherence function was computed for intra- and interhemispheric pairs of recording sites. Results were compared by Multivariate Analysis of Variance (MANOVA). Each time the autistic group showed a greater EEG coherence than the controls; it involved intrahemispheric communication among the left visual cortex (O1) and other regions either close to or distant from the occipital cortex. In contrast, lower coherence values involved frontal electrodes in the right hemisphere. No significant differences between groups were found for interhemispheric EEG coherence. These results show that the analysis of EEG coherence during REM sleep can disclose patterns of cortical connectivity that can be reduced or increased in adults with autism compared to typically developed individuals, depending of the cortical areas studied. Superior coherence involving visual perceptual areas in autism is consistent with an enhanced role of perception in autistic brain organization. En ligne : http://dx.doi.org/10.1002/aur.155 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=115
in Autism Research > 3-5 (October 2010) . - p.280-285[article] Enhanced connectivity between visual cortex and other regions of the brain in autism: a REM sleep EEG coherence study [Texte imprimé et/ou numérique] / Cathy LEVEILLE, Auteur ; Elise B. BARBEAU, Auteur ; Christianne BOLDUC, Auteur ; Elyse LIMOGES, Auteur ; Claude BERTHIAUME, Auteur ; Elyse CHEVRIER, Auteur ; Laurent MOTTRON, Auteur ; Roger GODBOUT, Auteur . - 2010 . - p.280-285.
Langues : Anglais (eng)
in Autism Research > 3-5 (October 2010) . - p.280-285
Mots-clés : autism occipital cortex REM sleep EEG EEG coherence visual perception neural coupling Index. décimale : PER Périodiques Résumé : Functional interregional neural coupling was measured as EEG coherence during REM sleep, a state of endogenous cortical activation, in 9 adult autistic individuals (21.1±4.0 years) and 13 typically developed controls (21.5±4.3 years) monitored for two consecutive nights in a sleep laboratory. Spectral analysis was performed on 60 s of artefact-free EEG samples distributed equally throughout the first four REM sleep periods of the second night. EEG coherence was calculated for six frequency bands (delta, theta, alpha, sigma, beta, and total spectrum) using a 22-electrode montage. The magnitude of coherence function was computed for intra- and interhemispheric pairs of recording sites. Results were compared by Multivariate Analysis of Variance (MANOVA). Each time the autistic group showed a greater EEG coherence than the controls; it involved intrahemispheric communication among the left visual cortex (O1) and other regions either close to or distant from the occipital cortex. In contrast, lower coherence values involved frontal electrodes in the right hemisphere. No significant differences between groups were found for interhemispheric EEG coherence. These results show that the analysis of EEG coherence during REM sleep can disclose patterns of cortical connectivity that can be reduced or increased in adults with autism compared to typically developed individuals, depending of the cortical areas studied. Superior coherence involving visual perceptual areas in autism is consistent with an enhanced role of perception in autistic brain organization. En ligne : http://dx.doi.org/10.1002/aur.155 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=115 Reduced Interhemispheric Connectivity in Childhood Autism Detected by Electroencephalographic Photic Driving Coherence / Vladimir V. LAZAREV in Journal of Autism and Developmental Disorders, 45-2 (February 2015)
[article]
Titre : Reduced Interhemispheric Connectivity in Childhood Autism Detected by Electroencephalographic Photic Driving Coherence Type de document : Texte imprimé et/ou numérique Auteurs : Vladimir V. LAZAREV, Auteur ; Adailton PONTES, Auteur ; Andrey A. MITROFANOV, Auteur ; Leonardo C. DEAZEVEDO, Auteur Article en page(s) : p.537-547 Langues : Anglais (eng) Mots-clés : Autism Children Electroencephalogram EEG photic driving EEG coherence Interhemispheric functional connectivity Index. décimale : PER Périodiques Résumé : The EEG coherence among 14 scalp points during intermittent photic stimulation at 11 fixed frequencies of 3–24 Hz was studied in 14 boys with autism, aged 6–14 years, with relatively intact verbal and intellectual functions, and 19 normally developing boys. The number of interhemispheric coherent connections pertaining to the 20 highest connections of each individual was significantly lower in autistic patients than in the control group at all the EEG beta frequencies corresponding to those of stimulation. The coefficient of coherence values between homologous occipital, parietal and central areas at the same frequencies were also lower in the autistic group in both mono- and bipolar montages due to a deficit in reactive photic driving increase. No differences between the groups were observed in the spontaneous EEG. En ligne : http://dx.doi.org/10.1007/s10803-013-1959-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=258
in Journal of Autism and Developmental Disorders > 45-2 (February 2015) . - p.537-547[article] Reduced Interhemispheric Connectivity in Childhood Autism Detected by Electroencephalographic Photic Driving Coherence [Texte imprimé et/ou numérique] / Vladimir V. LAZAREV, Auteur ; Adailton PONTES, Auteur ; Andrey A. MITROFANOV, Auteur ; Leonardo C. DEAZEVEDO, Auteur . - p.537-547.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 45-2 (February 2015) . - p.537-547
Mots-clés : Autism Children Electroencephalogram EEG photic driving EEG coherence Interhemispheric functional connectivity Index. décimale : PER Périodiques Résumé : The EEG coherence among 14 scalp points during intermittent photic stimulation at 11 fixed frequencies of 3–24 Hz was studied in 14 boys with autism, aged 6–14 years, with relatively intact verbal and intellectual functions, and 19 normally developing boys. The number of interhemispheric coherent connections pertaining to the 20 highest connections of each individual was significantly lower in autistic patients than in the control group at all the EEG beta frequencies corresponding to those of stimulation. The coefficient of coherence values between homologous occipital, parietal and central areas at the same frequencies were also lower in the autistic group in both mono- and bipolar montages due to a deficit in reactive photic driving increase. No differences between the groups were observed in the spontaneous EEG. En ligne : http://dx.doi.org/10.1007/s10803-013-1959-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=258 Electroencephalogram Coherence in Children With and Without Autism Spectrum Disorders: Decreased Interhemispheric Connectivity in Autism / Audrey M. CARSON in Autism Research, 7-3 (June 2014)
[article]
Titre : Electroencephalogram Coherence in Children With and Without Autism Spectrum Disorders: Decreased Interhemispheric Connectivity in Autism Type de document : Texte imprimé et/ou numérique Auteurs : Audrey M. CARSON, Auteur ; Nicole M. G. SALOWITZ, Auteur ; Robert A. SCHEIDT, Auteur ; Bridget K. DOLAN, Auteur ; Amy VAUGHAN VAN HECKE, Auteur Article en page(s) : p.334-343 Langues : Anglais (eng) Mots-clés : electroencephaolography EEG coherence school age??pediatrics social brain Index. décimale : PER Périodiques Résumé : Electroencephalogram coherence was measured in children with autism spectrum disorders (ASD) and control children at baseline and while watching videos of a familiar and unfamiliar person reading a story. Coherence was measured between the left and right hemispheres of the frontal, parietal, and temporal-parietal lobes (interhemispheric) and between the frontal and parietal lobes in each hemisphere (intrahemispheric). A data-reduction technique was employed to identify the frequency (alpha) that yielded significant differences in video conditions. Children with ASD displayed reduced coherence at the alpha frequency between the left and right temporal-parietal lobes in all conditions and reduced coherence at the alpha frequency between left and right frontal lobes during baseline. No group differences in intrahemispheric coherence at the alpha frequency emerged at the chosen statistical threshold. Results suggest decreased interhemispheric connectivity in frontal and temporal-parietal regions in children with ASD compared to controls. Autism Res 2014, 7: 334–343. © 2014 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.1367 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=235
in Autism Research > 7-3 (June 2014) . - p.334-343[article] Electroencephalogram Coherence in Children With and Without Autism Spectrum Disorders: Decreased Interhemispheric Connectivity in Autism [Texte imprimé et/ou numérique] / Audrey M. CARSON, Auteur ; Nicole M. G. SALOWITZ, Auteur ; Robert A. SCHEIDT, Auteur ; Bridget K. DOLAN, Auteur ; Amy VAUGHAN VAN HECKE, Auteur . - p.334-343.
Langues : Anglais (eng)
in Autism Research > 7-3 (June 2014) . - p.334-343
Mots-clés : electroencephaolography EEG coherence school age??pediatrics social brain Index. décimale : PER Périodiques Résumé : Electroencephalogram coherence was measured in children with autism spectrum disorders (ASD) and control children at baseline and while watching videos of a familiar and unfamiliar person reading a story. Coherence was measured between the left and right hemispheres of the frontal, parietal, and temporal-parietal lobes (interhemispheric) and between the frontal and parietal lobes in each hemisphere (intrahemispheric). A data-reduction technique was employed to identify the frequency (alpha) that yielded significant differences in video conditions. Children with ASD displayed reduced coherence at the alpha frequency between the left and right temporal-parietal lobes in all conditions and reduced coherence at the alpha frequency between left and right frontal lobes during baseline. No group differences in intrahemispheric coherence at the alpha frequency emerged at the chosen statistical threshold. Results suggest decreased interhemispheric connectivity in frontal and temporal-parietal regions in children with ASD compared to controls. Autism Res 2014, 7: 334–343. © 2014 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.1367 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=235 Altered immune function associated with disordered neural connectivity and executive dysfunctions: A neurophysiological study on children with autism spectrum disorders / Yvonne M.Y. HAN in Research in Autism Spectrum Disorders, 7-6 (June 2013)
[article]
Titre : Altered immune function associated with disordered neural connectivity and executive dysfunctions: A neurophysiological study on children with autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : Yvonne M.Y. HAN, Auteur ; Agnes S. CHAN, Auteur ; Sophia L. SZE, Auteur ; Mei-chun CHEUNG, Auteur ; Chun Kwok WONG, Auteur ; Joseph M. K. LAM, Auteur ; Priscilla M. K. POON, Auteur Article en page(s) : p.662-674 Langues : Anglais (eng) Mots-clés : EEG coherence Immunologic function Executive dysfunction Autism Children Index. décimale : PER Périodiques Résumé : Previous studies have shown that children with autism spectrum disorders (ASDs) have impaired executive function, disordered neural connectivity, and abnormal immunologic function. The present study examined whether these abnormalities were associated. Seventeen high-functioning (HFA) and 17 low-functioning (LFA) children with ASD, aged 8–17 years, participated voluntarily in the study. The two groups of children were compared on their general intelligence in terms of IQ; executive function as measured by the Hong Kong List Learning Test, D2 Test of Concentration, Five Point Test, Children's Color Trail Test, Tower of California Test, and Go/No-Go task; a non-executive task as measured by the Picture Completion Task; neural connectivity as measured by theta coherence in the anterior and posterior regions; and immunologic function as measured by the level of circulating CD3+ CD8+ suppressor/cytotoxic T lymphocytes in a blood sample. Results on executive function showed that LFA children performed significantly poorer than HFA children as shown on their lower Executive Composite as well as individual executive function scores. However, there was no group difference on the Picture Completion Task. Results on neural connectivity showed that LFA children demonstrated a different pattern of electroencephalography (EEG) coherence from HFA children as shown in the significantly elevated theta coherence in the anterior network, as well as at the left intra-hemispheric (LA-LP) and right-to-left inter-hemisphere (RA-LP) connections of LFA children. In immunologic function, results showed that LFA children had significantly elevated level of suppressor/cytotoxic T lymphocytes (CD3+ CD8+) (p lt; 0.05). In addition, the executive dysfunction, disordered neural connectivity, and abnormal immunologic function were found to be associated. These results provided some initial evidence to support the notion that immunologic factors are associated with neuronal damage, measureable by EEG coherence and manifested as executive dysfunctions. En ligne : http://dx.doi.org/10.1016/j.rasd.2013.02.011 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=199
in Research in Autism Spectrum Disorders > 7-6 (June 2013) . - p.662-674[article] Altered immune function associated with disordered neural connectivity and executive dysfunctions: A neurophysiological study on children with autism spectrum disorders [Texte imprimé et/ou numérique] / Yvonne M.Y. HAN, Auteur ; Agnes S. CHAN, Auteur ; Sophia L. SZE, Auteur ; Mei-chun CHEUNG, Auteur ; Chun Kwok WONG, Auteur ; Joseph M. K. LAM, Auteur ; Priscilla M. K. POON, Auteur . - p.662-674.
Langues : Anglais (eng)
in Research in Autism Spectrum Disorders > 7-6 (June 2013) . - p.662-674
Mots-clés : EEG coherence Immunologic function Executive dysfunction Autism Children Index. décimale : PER Périodiques Résumé : Previous studies have shown that children with autism spectrum disorders (ASDs) have impaired executive function, disordered neural connectivity, and abnormal immunologic function. The present study examined whether these abnormalities were associated. Seventeen high-functioning (HFA) and 17 low-functioning (LFA) children with ASD, aged 8–17 years, participated voluntarily in the study. The two groups of children were compared on their general intelligence in terms of IQ; executive function as measured by the Hong Kong List Learning Test, D2 Test of Concentration, Five Point Test, Children's Color Trail Test, Tower of California Test, and Go/No-Go task; a non-executive task as measured by the Picture Completion Task; neural connectivity as measured by theta coherence in the anterior and posterior regions; and immunologic function as measured by the level of circulating CD3+ CD8+ suppressor/cytotoxic T lymphocytes in a blood sample. Results on executive function showed that LFA children performed significantly poorer than HFA children as shown on their lower Executive Composite as well as individual executive function scores. However, there was no group difference on the Picture Completion Task. Results on neural connectivity showed that LFA children demonstrated a different pattern of electroencephalography (EEG) coherence from HFA children as shown in the significantly elevated theta coherence in the anterior network, as well as at the left intra-hemispheric (LA-LP) and right-to-left inter-hemisphere (RA-LP) connections of LFA children. In immunologic function, results showed that LFA children had significantly elevated level of suppressor/cytotoxic T lymphocytes (CD3+ CD8+) (p lt; 0.05). In addition, the executive dysfunction, disordered neural connectivity, and abnormal immunologic function were found to be associated. These results provided some initial evidence to support the notion that immunologic factors are associated with neuronal damage, measureable by EEG coherence and manifested as executive dysfunctions. En ligne : http://dx.doi.org/10.1016/j.rasd.2013.02.011 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=199 Atypical Hemispheric Specialization for Faces in Infants at Risk for Autism Spectrum Disorder / Brandon KEEHN in Autism Research, 8-2 (April 2015)
Permalink