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Auteur S. ROUX |
Documents disponibles écrits par cet auteur (5)
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Atypical sound discrimination in children with ASD as indicated by cortical ERPs / Aurélie BIDET-CAULET in Journal of Neurodevelopmental Disorders, 9-1 (December 2017)
[article]
Titre : Atypical sound discrimination in children with ASD as indicated by cortical ERPs Type de document : Texte imprimé et/ou numérique Auteurs : Aurélie BIDET-CAULET, Auteur ; Marianne LATINUS, Auteur ; S. ROUX, Auteur ; J. MALVY, Auteur ; Frédérique BONNET-BRILHAULT, Auteur ; N. BRUNEAU, Auteur Article en page(s) : p.13 Langues : Anglais (eng) Mots-clés : Auditory Autism Development Ftpv Speech Voice Index. décimale : PER Périodiques Résumé : BACKGROUND: Individuals with autism spectrum disorder (ASD) show a relative indifference to the human voice. Accordingly, and contrarily to their typically developed peers, adults with autism do not show a preferential response to voices in the superior temporal sulcus; this lack of voice-specific response was previously linked to atypical processing of voices. In electroencephalography, a slow event-related potential (ERP) called the fronto-temporal positivity to voice (FTPV) is larger for vocal than for non-vocal sounds, resulting in a voice-sensitive response over right fronto-temporal sites. Here, we investigated the neurophysiological correlates of voice perception in children with and without ASD. METHODS: Sixteen children with autism and 16 age-matched typically developing children heard vocal (speech and non-speech) and non-vocal sounds while their electroencephalographic activity was recorded; overall IQ was smaller in the group of children with ASD. ERP amplitudes were compared using non-parametric statistical tests at each electrode and in successive 20-ms time windows. Within each group, differences between conditions were assessed using a non-parametric Quade test between 0 and 400 ms post-stimulus. Inter-group comparisons of ERP amplitudes were performed using non-paired Kruskal-Wallis tests between 140 and 180 ms post-stimulus. RESULTS: Typically developing children showed the classical voice-sensitive response over right fronto-temporal electrodes, for both speech and non-speech vocal sounds. Children with ASD did not show a preferential response to vocal sounds. Inter-group analysis showed no difference in the processing of vocal sounds, both speech and non-speech, but significant differences in the processing of non-vocal sounds over right fronto-temporal sites. CONCLUSIONS: Our results demonstrate a lack of voice-preferential response in children with autism spectrum disorders. In contrast to observations in adults with ASD, the lack of voice-preferential response was attributed to an atypical response to non-vocal sounds, which was overall more similar to the event-related potentials evoked by vocal sounds in both groups. This result suggests atypical maturation processes in ASD impeding the specialization of temporal regions in voice processing. En ligne : http://dx.doi.org/10.1186/s11689-017-9194-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=350
in Journal of Neurodevelopmental Disorders > 9-1 (December 2017) . - p.13[article] Atypical sound discrimination in children with ASD as indicated by cortical ERPs [Texte imprimé et/ou numérique] / Aurélie BIDET-CAULET, Auteur ; Marianne LATINUS, Auteur ; S. ROUX, Auteur ; J. MALVY, Auteur ; Frédérique BONNET-BRILHAULT, Auteur ; N. BRUNEAU, Auteur . - p.13.
Langues : Anglais (eng)
in Journal of Neurodevelopmental Disorders > 9-1 (December 2017) . - p.13
Mots-clés : Auditory Autism Development Ftpv Speech Voice Index. décimale : PER Périodiques Résumé : BACKGROUND: Individuals with autism spectrum disorder (ASD) show a relative indifference to the human voice. Accordingly, and contrarily to their typically developed peers, adults with autism do not show a preferential response to voices in the superior temporal sulcus; this lack of voice-specific response was previously linked to atypical processing of voices. In electroencephalography, a slow event-related potential (ERP) called the fronto-temporal positivity to voice (FTPV) is larger for vocal than for non-vocal sounds, resulting in a voice-sensitive response over right fronto-temporal sites. Here, we investigated the neurophysiological correlates of voice perception in children with and without ASD. METHODS: Sixteen children with autism and 16 age-matched typically developing children heard vocal (speech and non-speech) and non-vocal sounds while their electroencephalographic activity was recorded; overall IQ was smaller in the group of children with ASD. ERP amplitudes were compared using non-parametric statistical tests at each electrode and in successive 20-ms time windows. Within each group, differences between conditions were assessed using a non-parametric Quade test between 0 and 400 ms post-stimulus. Inter-group comparisons of ERP amplitudes were performed using non-paired Kruskal-Wallis tests between 140 and 180 ms post-stimulus. RESULTS: Typically developing children showed the classical voice-sensitive response over right fronto-temporal electrodes, for both speech and non-speech vocal sounds. Children with ASD did not show a preferential response to vocal sounds. Inter-group analysis showed no difference in the processing of vocal sounds, both speech and non-speech, but significant differences in the processing of non-vocal sounds over right fronto-temporal sites. CONCLUSIONS: Our results demonstrate a lack of voice-preferential response in children with autism spectrum disorders. In contrast to observations in adults with ASD, the lack of voice-preferential response was attributed to an atypical response to non-vocal sounds, which was overall more similar to the event-related potentials evoked by vocal sounds in both groups. This result suggests atypical maturation processes in ASD impeding the specialization of temporal regions in voice processing. En ligne : http://dx.doi.org/10.1186/s11689-017-9194-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=350 Autism is a prenatal disorder: Evidence from late gestation brain overgrowth / Frédérique BONNET-BRILHAULT in Autism Research, 11-12 (December 2018)
[article]
Titre : Autism is a prenatal disorder: Evidence from late gestation brain overgrowth Type de document : Texte imprimé et/ou numérique Auteurs : Frédérique BONNET-BRILHAULT, Auteur ; T. A. RAJERISON, Auteur ; C. PAILLET, Auteur ; M. GUIMARD-BRUNAULT, Auteur ; A. SABY, Auteur ; L. PONSON, Auteur ; G. TRIPI, Auteur ; J. MALVY, Auteur ; S. ROUX, Auteur Article en page(s) : p.1635-1642 Langues : Anglais (eng) Mots-clés : brain growth head circumference neurodevelopmental disorder ultrasound Index. décimale : PER Périodiques Résumé : This retrospective study aimed to specify the critical period for atypical brain development in individuals with autism spectrum disorder (ASD) using prenatal and postnatal head growth parameters. The sample consisted of 80 Caucasian, unrelated, idiopathic patients with ASD born after 1995. Fetal ultrasound parameters (head circumference [HC], abdominal circumference, and femur length) were obtained during the second and third trimesters of gestation. HC at birth and postnatal parameters at 12 and 24 months of age were also collected. Head overgrowth, assessed by HC, was highlighted during the second (20-26 weeks of amenorrhea) and third (28-36 weeks of amenorrhea) trimesters. Normal growth of body fetal parameters indicated that head overgrowth was not because of overall body overgrowth. Moreover, postnatal results replicated previously and reported head overgrowth. A critical time window for atypical brain development in autism is hypothesized to begin from the 22nd week of amenorrhea. This period is critical for cortical lamination and glial activation. A pathophysiological cascade is suggested with interactions between candidate genes and environmental factors. Autism Research 2018, 11: 1635-1642. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: It is now widely acknowledged in the scientific community, that autism is a neurodevelopmental disorder. Recent evidence from animal and pathological studies has implicated the in utero period. However, the precise time of onset of abnormal brain development remains unknown. This retrospective study reports novel findings, identifying an atypical head growth trajectory in children with autism, during the in utero period (after the 22nd week of amenorrhea). In the same children, postnatal head overgrowth was also observed. Late gestation is identified as a critical period for atypical brain development underlying autism symptoms. En ligne : http://dx.doi.org/10.1002/aur.2036 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=372
in Autism Research > 11-12 (December 2018) . - p.1635-1642[article] Autism is a prenatal disorder: Evidence from late gestation brain overgrowth [Texte imprimé et/ou numérique] / Frédérique BONNET-BRILHAULT, Auteur ; T. A. RAJERISON, Auteur ; C. PAILLET, Auteur ; M. GUIMARD-BRUNAULT, Auteur ; A. SABY, Auteur ; L. PONSON, Auteur ; G. TRIPI, Auteur ; J. MALVY, Auteur ; S. ROUX, Auteur . - p.1635-1642.
Langues : Anglais (eng)
in Autism Research > 11-12 (December 2018) . - p.1635-1642
Mots-clés : brain growth head circumference neurodevelopmental disorder ultrasound Index. décimale : PER Périodiques Résumé : This retrospective study aimed to specify the critical period for atypical brain development in individuals with autism spectrum disorder (ASD) using prenatal and postnatal head growth parameters. The sample consisted of 80 Caucasian, unrelated, idiopathic patients with ASD born after 1995. Fetal ultrasound parameters (head circumference [HC], abdominal circumference, and femur length) were obtained during the second and third trimesters of gestation. HC at birth and postnatal parameters at 12 and 24 months of age were also collected. Head overgrowth, assessed by HC, was highlighted during the second (20-26 weeks of amenorrhea) and third (28-36 weeks of amenorrhea) trimesters. Normal growth of body fetal parameters indicated that head overgrowth was not because of overall body overgrowth. Moreover, postnatal results replicated previously and reported head overgrowth. A critical time window for atypical brain development in autism is hypothesized to begin from the 22nd week of amenorrhea. This period is critical for cortical lamination and glial activation. A pathophysiological cascade is suggested with interactions between candidate genes and environmental factors. Autism Research 2018, 11: 1635-1642. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: It is now widely acknowledged in the scientific community, that autism is a neurodevelopmental disorder. Recent evidence from animal and pathological studies has implicated the in utero period. However, the precise time of onset of abnormal brain development remains unknown. This retrospective study reports novel findings, identifying an atypical head growth trajectory in children with autism, during the in utero period (after the 22nd week of amenorrhea). In the same children, postnatal head overgrowth was also observed. Late gestation is identified as a critical period for atypical brain development underlying autism symptoms. En ligne : http://dx.doi.org/10.1002/aur.2036 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=372 Brief Report: Early VEPs to Pattern-Reversal in Adolescents and Adults with Autism / K. KOVARSKI in Journal of Autism and Developmental Disorders, 46-10 (October 2016)
[article]
Titre : Brief Report: Early VEPs to Pattern-Reversal in Adolescents and Adults with Autism Type de document : Texte imprimé et/ou numérique Auteurs : K. KOVARSKI, Auteur ; A. THILLAY, Auteur ; Emmanuelle HOUY-DURAND, Auteur ; S. ROUX, Auteur ; Aurélie BIDET-CAULET, Auteur ; Frédérique BONNET-BRILHAULT, Auteur ; Magali BATTY, Auteur Article en page(s) : p.3377-3386 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder Visual evoked potentials Pattern-reversal paradigm Sensory symptoms Index. décimale : PER Périodiques Résumé : Autism spectrum disorder (ASD) is characterized by atypical visual perception both in the social and nonsocial domain. In order to measure a reliable visual response, visual evoked potentials were recorded during a passive pattern-reversal stimulation in adolescents and adults with and without ASD. While the present results show the same age-related changes in both autistic and non-autistic groups, they reveal a smaller P100 amplitude in the ASD group compared to controls. These results confirm that early visual responses are affected in ASD even with a simple, non social and passive stimulation and suggest that they should be considered in order to better understand higher-level processes. En ligne : http://dx.doi.org/10.1007/s10803-016-2880-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=293
in Journal of Autism and Developmental Disorders > 46-10 (October 2016) . - p.3377-3386[article] Brief Report: Early VEPs to Pattern-Reversal in Adolescents and Adults with Autism [Texte imprimé et/ou numérique] / K. KOVARSKI, Auteur ; A. THILLAY, Auteur ; Emmanuelle HOUY-DURAND, Auteur ; S. ROUX, Auteur ; Aurélie BIDET-CAULET, Auteur ; Frédérique BONNET-BRILHAULT, Auteur ; Magali BATTY, Auteur . - p.3377-3386.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 46-10 (October 2016) . - p.3377-3386
Mots-clés : Autism spectrum disorder Visual evoked potentials Pattern-reversal paradigm Sensory symptoms Index. décimale : PER Périodiques Résumé : Autism spectrum disorder (ASD) is characterized by atypical visual perception both in the social and nonsocial domain. In order to measure a reliable visual response, visual evoked potentials were recorded during a passive pattern-reversal stimulation in adolescents and adults with and without ASD. While the present results show the same age-related changes in both autistic and non-autistic groups, they reveal a smaller P100 amplitude in the ASD group compared to controls. These results confirm that early visual responses are affected in ASD even with a simple, non social and passive stimulation and suggest that they should be considered in order to better understand higher-level processes. En ligne : http://dx.doi.org/10.1007/s10803-016-2880-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=293 Incomplete Gestation has an Impact on Cognitive Abilities in Autism Spectrum Disorder / M. BRAYETTE in Journal of Autism and Developmental Disorders, 49-10 (October 2019)
[article]
Titre : Incomplete Gestation has an Impact on Cognitive Abilities in Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : M. BRAYETTE, Auteur ; E. SALIBA, Auteur ; J. MALVY, Auteur ; R. BLANC, Auteur ; L. PONSON, Auteur ; G. TRIPI, Auteur ; S. ROUX, Auteur ; Frédérique BONNET-BRILHAULT, Auteur Article en page(s) : p.4339-4345 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder Cognitive abilities Early term Moderately and late preterm Index. décimale : PER Périodiques Résumé : Extreme prematurity is known as a risk factor for autism spectrum disorder (ASD). However, the association between prematurity and ASD, for children born moderately and late preterm (MLPT) and those born early term (ET), is less established. This retrospective study aimed to characterize the phenotypic characteristics (i.e. behavioral profile and cognitive abilities) of 254 children with ASD, between 3 and 15 years of age, born MLPT (19 children), ET (60 children) and full term (175 children). MLPT and ET births do not modify ASD symptomatology, but modify cognitive development. The results highlight that incomplete gestation, i.e., MLPT or ET, has a negative impact on both verbal and nonverbal cognitive abilities, in children with neurodevelopmental vulnerability. En ligne : http://dx.doi.org/10.1007/s10803-019-04105-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=407
in Journal of Autism and Developmental Disorders > 49-10 (October 2019) . - p.4339-4345[article] Incomplete Gestation has an Impact on Cognitive Abilities in Autism Spectrum Disorder [Texte imprimé et/ou numérique] / M. BRAYETTE, Auteur ; E. SALIBA, Auteur ; J. MALVY, Auteur ; R. BLANC, Auteur ; L. PONSON, Auteur ; G. TRIPI, Auteur ; S. ROUX, Auteur ; Frédérique BONNET-BRILHAULT, Auteur . - p.4339-4345.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 49-10 (October 2019) . - p.4339-4345
Mots-clés : Autism spectrum disorder Cognitive abilities Early term Moderately and late preterm Index. décimale : PER Périodiques Résumé : Extreme prematurity is known as a risk factor for autism spectrum disorder (ASD). However, the association between prematurity and ASD, for children born moderately and late preterm (MLPT) and those born early term (ET), is less established. This retrospective study aimed to characterize the phenotypic characteristics (i.e. behavioral profile and cognitive abilities) of 254 children with ASD, between 3 and 15 years of age, born MLPT (19 children), ET (60 children) and full term (175 children). MLPT and ET births do not modify ASD symptomatology, but modify cognitive development. The results highlight that incomplete gestation, i.e., MLPT or ET, has a negative impact on both verbal and nonverbal cognitive abilities, in children with neurodevelopmental vulnerability. En ligne : http://dx.doi.org/10.1007/s10803-019-04105-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=407 The Need for an Ecological Approach to Parental Stress in Autism Spectrum Disorders: The Combined Role of Individual and Environmental Factors / Cyrielle DERGUY in Journal of Autism and Developmental Disorders, 46-6 (June 2016)
[article]
Titre : The Need for an Ecological Approach to Parental Stress in Autism Spectrum Disorders: The Combined Role of Individual and Environmental Factors Type de document : Texte imprimé et/ou numérique Auteurs : Cyrielle DERGUY, Auteur ; K. M’BAILARA, Auteur ; G. MICHEL, Auteur ; S. ROUX, Auteur ; Manuel P. BOUVARD, Auteur Article en page(s) : p.1895-1905 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders (ASD) Parental stress Ecological approach Family factors Index. décimale : PER Périodiques Résumé : This study aimed to identify parental stress predictors in ASD by considering individual and environmental factors in an ecological approach. Participants were 115 parents of children with ASD aged from 3 to 10 years. Multiple regression analyses were conducted to determine the best predictors of parental stress among child-related, parent-related and environmental factors. Poor quality interactions within the extended family, high levels of expressed emotion and absence of children’s schooling were associated with higher stress, regardless of the child’s age and developmental quotient [F (3) = 37.051; p < 0.001; Adj. R2 = 0.457]. This study highlights the importance of considering environmental factors, specifically family variables, to understand parental stress. These key findings should be considered when designing support programs. En ligne : http://dx.doi.org/10.1007/s10803-016-2719-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=288
in Journal of Autism and Developmental Disorders > 46-6 (June 2016) . - p.1895-1905[article] The Need for an Ecological Approach to Parental Stress in Autism Spectrum Disorders: The Combined Role of Individual and Environmental Factors [Texte imprimé et/ou numérique] / Cyrielle DERGUY, Auteur ; K. M’BAILARA, Auteur ; G. MICHEL, Auteur ; S. ROUX, Auteur ; Manuel P. BOUVARD, Auteur . - p.1895-1905.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 46-6 (June 2016) . - p.1895-1905
Mots-clés : Autism spectrum disorders (ASD) Parental stress Ecological approach Family factors Index. décimale : PER Périodiques Résumé : This study aimed to identify parental stress predictors in ASD by considering individual and environmental factors in an ecological approach. Participants were 115 parents of children with ASD aged from 3 to 10 years. Multiple regression analyses were conducted to determine the best predictors of parental stress among child-related, parent-related and environmental factors. Poor quality interactions within the extended family, high levels of expressed emotion and absence of children’s schooling were associated with higher stress, regardless of the child’s age and developmental quotient [F (3) = 37.051; p < 0.001; Adj. R2 = 0.457]. This study highlights the importance of considering environmental factors, specifically family variables, to understand parental stress. These key findings should be considered when designing support programs. En ligne : http://dx.doi.org/10.1007/s10803-016-2719-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=288