12 recherche sur le mot-clé 'Corpus callosum'

Facial emotion recognition in agenesis of the corpus callosum / M. W. BRIDGMAN in Journal of Neurodevelopmental Disorders, 6-1 (December 2014)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 6-1 (December 2014) . - p.32 Titre : Facial emotion recognition in agenesis of the corpus callosum Type de document : Texte imprimé et/ou numérique Auteurs : M. W. BRIDGMAN, Auteur ; W. S. BROWN, Auteur ; M. L. SPEZIO, Auteur ; M. K. LEONARD, Auteur ; Ralph ADOLPHS, Auteur ; L. K. PAUL, Auteur Article en page(s) : p.32 Langues : Anglais (eng) Mots-clés : Corpus callosum  Corpus callosum agenesis  Facial emotion Index. décimale : PER Périodiques Résumé : BACKGROUND: Impaired social functioning is a common symptom of individuals with developmental disruptions in callosal connectivity. Among these developmental conditions, agenesis of the corpus callosum provides the most extreme and clearly identifiable example of callosal disconnection. To date, deficits in nonliteral language comprehension, humor, theory of mind, and social reasoning have been documented in agenesis of the corpus callosum. Here, we examined a basic social ability as yet not investigated in this population: recognition of facial emotion and its association with social gaze. METHODS: Nine individuals with callosal agenesis and nine matched controls completed four tasks involving emotional faces: emotion recognition from upright and inverted faces, gender recognition, and passive viewing. Eye-tracking data were collected concurrently on all four tasks and analyzed according to designated facial regions of interest. RESULTS: Individuals with callosal agenesis exhibited impairments in recognizing emotions from upright faces, in particular lower accuracy for fear and anger, and these impairments were directly associated with diminished attention to the eye region. The callosal agenesis group exhibited greater consistency in emotion recognition across conditions (upright vs. inverted), with poorest performance for fear identification in both conditions. The callosal agenesis group also had atypical facial scanning (lower fractional dwell time in the eye region) during gender naming and passive viewing of faces, but they did not differ from controls on gender naming performance. The pattern of results did not differ when taking into account full-scale intelligence quotient or presence of autism spectrum symptoms. CONCLUSIONS: Agenesis of the corpus callosum results in a pattern of atypical facial scanning characterized by diminished attention to the eyes. This pattern suggests that reduced callosal connectivity may contribute to the development and maintenance of emotion processing deficits involving reduced attention to others' eyes. En ligne : http://dx.doi.org/10.1186/1866-1955-6-32 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=346 [article] Facial emotion recognition in agenesis of the corpus callosum [Texte imprimé et/ou numérique] / M. W. BRIDGMAN, Auteur ; W. S. BROWN, Auteur ; M. L. SPEZIO, Auteur ; M. K. LEONARD, Auteur ; Ralph ADOLPHS, Auteur ; L. K. PAUL, Auteur . - p.32. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 6-1 (December 2014) . - p.32 Mots-clés : Corpus callosum  Corpus callosum agenesis  Facial emotion Index. décimale : PER Périodiques Résumé : BACKGROUND: Impaired social functioning is a common symptom of individuals with developmental disruptions in callosal connectivity. Among these developmental conditions, agenesis of the corpus callosum provides the most extreme and clearly identifiable example of callosal disconnection. To date, deficits in nonliteral language comprehension, humor, theory of mind, and social reasoning have been documented in agenesis of the corpus callosum. Here, we examined a basic social ability as yet not investigated in this population: recognition of facial emotion and its association with social gaze. METHODS: Nine individuals with callosal agenesis and nine matched controls completed four tasks involving emotional faces: emotion recognition from upright and inverted faces, gender recognition, and passive viewing. Eye-tracking data were collected concurrently on all four tasks and analyzed according to designated facial regions of interest. RESULTS: Individuals with callosal agenesis exhibited impairments in recognizing emotions from upright faces, in particular lower accuracy for fear and anger, and these impairments were directly associated with diminished attention to the eye region. The callosal agenesis group exhibited greater consistency in emotion recognition across conditions (upright vs. inverted), with poorest performance for fear identification in both conditions. The callosal agenesis group also had atypical facial scanning (lower fractional dwell time in the eye region) during gender naming and passive viewing of faces, but they did not differ from controls on gender naming performance. The pattern of results did not differ when taking into account full-scale intelligence quotient or presence of autism spectrum symptoms. CONCLUSIONS: Agenesis of the corpus callosum results in a pattern of atypical facial scanning characterized by diminished attention to the eyes. This pattern suggests that reduced callosal connectivity may contribute to the development and maintenance of emotion processing deficits involving reduced attention to others' eyes. En ligne : http://dx.doi.org/10.1186/1866-1955-6-32 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=346

Abnormal Corpus Callosum Connectivity, Socio-communicative Deficits, and Motor Deficits in Children with Autism Spectrum Disorder: A Diffusion Tensor Imaging Study / Ryuzo HANAIE in Journal of Autism and Developmental Disorders, 44-9 (September 2014)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 44-9 (September 2014) . - p.2209-2220 Titre : Abnormal Corpus Callosum Connectivity, Socio-communicative Deficits, and Motor Deficits in Children with Autism Spectrum Disorder: A Diffusion Tensor Imaging Study Type de document : Texte imprimé et/ou numérique Auteurs : Ryuzo HANAIE, Auteur ; Ikuko MOHRI, Auteur ; Kuriko KAGITANI-SHIMONO, Auteur ; Masaya TACHIBANA, Auteur ; Junko MATSUZAKI, Auteur ; Yoshiyuki WATANABE, Auteur ; Norihiko FUJITA, Auteur ; Masako TANIIKE, Auteur Article en page(s) : p.2209-2220 Langues : Anglais (eng) Mots-clés : Diffusion tensor imaging  Tractography  Corpus callosum  Autism spectrum disorder  Motor function Index. décimale : PER Périodiques Résumé : In addition to social and communicative deficits, many studies have reported motor deficits in autism spectrum disorder (ASD). This study investigated the macro and microstructural properties of the corpus callosum (CC) of 18 children with ASD and 12 typically developing controls using diffusion tensor imaging tractography. We aimed to explore whether abnormalities of the CC were related to motor deficits, as well as social and communication deficits in children with ASD. The ASD group displayed abnormal macro and microstructure of the total CC and its subdivisions and its structural properties were related to socio-communicative deficits, but not to motor deficits in ASD. These findings advance our understanding of the contributions of the CC to ASD symptoms. En ligne : http://dx.doi.org/10.1007/s10803-014-2096-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=238 [article] Abnormal Corpus Callosum Connectivity, Socio-communicative Deficits, and Motor Deficits in Children with Autism Spectrum Disorder: A Diffusion Tensor Imaging Study [Texte imprimé et/ou numérique] / Ryuzo HANAIE, Auteur ; Ikuko MOHRI, Auteur ; Kuriko KAGITANI-SHIMONO, Auteur ; Masaya TACHIBANA, Auteur ; Junko MATSUZAKI, Auteur ; Yoshiyuki WATANABE, Auteur ; Norihiko FUJITA, Auteur ; Masako TANIIKE, Auteur . - p.2209-2220. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 44-9 (September 2014) . - p.2209-2220 Mots-clés : Diffusion tensor imaging  Tractography  Corpus callosum  Autism spectrum disorder  Motor function Index. décimale : PER Périodiques Résumé : In addition to social and communicative deficits, many studies have reported motor deficits in autism spectrum disorder (ASD). This study investigated the macro and microstructural properties of the corpus callosum (CC) of 18 children with ASD and 12 typically developing controls using diffusion tensor imaging tractography. We aimed to explore whether abnormalities of the CC were related to motor deficits, as well as social and communication deficits in children with ASD. The ASD group displayed abnormal macro and microstructure of the total CC and its subdivisions and its structural properties were related to socio-communicative deficits, but not to motor deficits in ASD. These findings advance our understanding of the contributions of the CC to ASD symptoms. En ligne : http://dx.doi.org/10.1007/s10803-014-2096-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=238

Psychological Correlates of Handedness and Corpus Callosum Asymmetry in Autism: The left Hemisphere Dysfunction Theory Revisited / Dorothea L. FLORIS in Journal of Autism and Developmental Disorders, 43-8 (August 2013)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 43-8 (August 2013) . - p.1758-1772 Titre : Psychological Correlates of Handedness and Corpus Callosum Asymmetry in Autism: The left Hemisphere Dysfunction Theory Revisited Type de document : Texte imprimé et/ou numérique Auteurs : Dorothea L. FLORIS, Auteur ; Lindsay R. CHURA, Auteur ; Rosemary J. HOLT, Auteur ; John SUCKLING, Auteur ; Edward T. BULLMORE, Auteur ; Simon BARON-COHEN, Auteur ; Michael D. SPENCER, Auteur Article en page(s) : p.1758-1772 Langues : Anglais (eng) Mots-clés : Autism  Corpus callosum  Handedness  Asymmetry  Lateralization  Broader autism phenotype Index. décimale : PER Périodiques Résumé : Rightward cerebral lateralization has been suggested to be involved in the neuropathology of autism spectrum conditions. We investigated functional and neuroanatomical asymmetry, in terms of handedness and corpus callosum measurements in male adolescents with autism, their unaffected siblings and controls, and their associations with executive dysfunction and symptom severity. Adolescents with autism did not differ from controls in functional asymmetry, but neuroanatomically showed the expected pattern of stronger rightward lateralization in the posterior and anterior midbody based on their hand-preference. Measures of symptom severity were related to rightward asymmetry in three subregions (splenium, posterior midbody and rostral body). We found the opposite pattern for the isthmus and rostrum with better cognitive and less severe clinical scores associated with rightward lateralization. En ligne : http://dx.doi.org/10.1007/s10803-012-1720-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=205 [article] Psychological Correlates of Handedness and Corpus Callosum Asymmetry in Autism: The left Hemisphere Dysfunction Theory Revisited [Texte imprimé et/ou numérique] / Dorothea L. FLORIS, Auteur ; Lindsay R. CHURA, Auteur ; Rosemary J. HOLT, Auteur ; John SUCKLING, Auteur ; Edward T. BULLMORE, Auteur ; Simon BARON-COHEN, Auteur ; Michael D. SPENCER, Auteur . - p.1758-1772. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 43-8 (August 2013) . - p.1758-1772 Mots-clés : Autism  Corpus callosum  Handedness  Asymmetry  Lateralization  Broader autism phenotype Index. décimale : PER Périodiques Résumé : Rightward cerebral lateralization has been suggested to be involved in the neuropathology of autism spectrum conditions. We investigated functional and neuroanatomical asymmetry, in terms of handedness and corpus callosum measurements in male adolescents with autism, their unaffected siblings and controls, and their associations with executive dysfunction and symptom severity. Adolescents with autism did not differ from controls in functional asymmetry, but neuroanatomically showed the expected pattern of stronger rightward lateralization in the posterior and anterior midbody based on their hand-preference. Measures of symptom severity were related to rightward asymmetry in three subregions (splenium, posterior midbody and rostral body). We found the opposite pattern for the isthmus and rostrum with better cognitive and less severe clinical scores associated with rightward lateralization. En ligne : http://dx.doi.org/10.1007/s10803-012-1720-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=205

Social Inferences in Agenesis of the Corpus Callosum and Autism: Semantic Analysis and Topic Modeling / T. RENTERIA-VAZQUEZ in Journal of Autism and Developmental Disorders, 52-2 (February 2022)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 52-2 (February 2022) . - p.569-583 Titre : Social Inferences in Agenesis of the Corpus Callosum and Autism: Semantic Analysis and Topic Modeling Type de document : Texte imprimé et/ou numérique Auteurs : T. RENTERIA-VAZQUEZ, Auteur ; W. S. BROWN, Auteur ; C. KANG, Auteur ; M. GRAVES, Auteur ; F. CASTELLI, Auteur ; L. K. PAUL, Auteur Article en page(s) : p.569-583 Langues : Anglais (eng) Mots-clés : Adult  Agenesis of Corpus Callosum  Autism Spectrum Disorder  Autistic Disorder  Corpus Callosum  Humans  Semantics  Agenesis of the corpus callosum  Autism  Mental attribution  Social inference Index. décimale : PER Périodiques Résumé : Impoverished capacity for social inference is one of several symptoms that are common to both agenesis of the corpus callosum (AgCC) and Autism Spectrum Disorder (ASD). This research compared the ability of 14 adults with AgCC, 13 high-functioning adults with ASD and 14 neurotypical controls to accurately attribute social meaning to the interactions of animated triangles. Descriptions of the animations were analyzed in three ways: subjective ratings, Linguistic Inquiry and Word Count, and topic modeling (Latent Dirichlet Allocation). Although subjective ratings indicated that all groups made similar inferences from the animations, the index of perplexity (atypicality of topic) generated from topic modeling revealed that inferences from individuals with AgCC or ASD displayed significantly less social imagination than those of controls. En ligne : http://dx.doi.org/10.1007/s10803-021-04957-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=455 [article] Social Inferences in Agenesis of the Corpus Callosum and Autism: Semantic Analysis and Topic Modeling [Texte imprimé et/ou numérique] / T. RENTERIA-VAZQUEZ, Auteur ; W. S. BROWN, Auteur ; C. KANG, Auteur ; M. GRAVES, Auteur ; F. CASTELLI, Auteur ; L. K. PAUL, Auteur . - p.569-583. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 52-2 (February 2022) . - p.569-583 Mots-clés : Adult  Agenesis of Corpus Callosum  Autism Spectrum Disorder  Autistic Disorder  Corpus Callosum  Humans  Semantics  Agenesis of the corpus callosum  Autism  Mental attribution  Social inference Index. décimale : PER Périodiques Résumé : Impoverished capacity for social inference is one of several symptoms that are common to both agenesis of the corpus callosum (AgCC) and Autism Spectrum Disorder (ASD). This research compared the ability of 14 adults with AgCC, 13 high-functioning adults with ASD and 14 neurotypical controls to accurately attribute social meaning to the interactions of animated triangles. Descriptions of the animations were analyzed in three ways: subjective ratings, Linguistic Inquiry and Word Count, and topic modeling (Latent Dirichlet Allocation). Although subjective ratings indicated that all groups made similar inferences from the animations, the index of perplexity (atypicality of topic) generated from topic modeling revealed that inferences from individuals with AgCC or ASD displayed significantly less social imagination than those of controls. En ligne : http://dx.doi.org/10.1007/s10803-021-04957-2 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=455

A Two-Year Longitudinal MRI Study of the Corpus Callosum in Autism / Thomas W. FRAZIER in Journal of Autism and Developmental Disorders, 42-11 (November 2012)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 42-11 (November 2012) . - p.2312-2322 Titre : A Two-Year Longitudinal MRI Study of the Corpus Callosum in Autism Type de document : Texte imprimé et/ou numérique Auteurs : Thomas W. FRAZIER, Auteur ; Matcheri S. KESHAVAN, Auteur ; Nancy J. MINSHEW, Auteur ; Antonio Y. HARDAN, Auteur Article en page(s) : p.2312-2322 Langues : Anglais (eng) Mots-clés : Magnetic resonance imaging  Autism  Corpus callosum  Rostral body Index. décimale : PER Périodiques Résumé : A growing body of literature has identified size reductions of the corpus callosum (CC) in autism. However, to our knowledge, no published studies have reported on the growth of CC volumes in youth with autism. Volumes of the total CC and its sub-divisions were obtained from 23 male children with autism and 23 age- and gender-matched controls at baseline and 2-year follow-up. Persistent reductions in total CC volume were observed in participants with autism relative to controls. Only the rostral body subdivision showed a normalization of size over time. Persistent reductions are consistent with the diagnostic stability and life-long impairment observed in many individuals with autism. Multi-modal imaging studies are needed to identify specific fiber tracks contributing to CC reductions. En ligne : http://dx.doi.org/10.1007/s10803-012-1478-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=182 [article] A Two-Year Longitudinal MRI Study of the Corpus Callosum in Autism [Texte imprimé et/ou numérique] / Thomas W. FRAZIER, Auteur ; Matcheri S. KESHAVAN, Auteur ; Nancy J. MINSHEW, Auteur ; Antonio Y. HARDAN, Auteur . - p.2312-2322. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 42-11 (November 2012) . - p.2312-2322 Mots-clés : Magnetic resonance imaging  Autism  Corpus callosum  Rostral body Index. décimale : PER Périodiques Résumé : A growing body of literature has identified size reductions of the corpus callosum (CC) in autism. However, to our knowledge, no published studies have reported on the growth of CC volumes in youth with autism. Volumes of the total CC and its sub-divisions were obtained from 23 male children with autism and 23 age- and gender-matched controls at baseline and 2-year follow-up. Persistent reductions in total CC volume were observed in participants with autism relative to controls. Only the rostral body subdivision showed a normalization of size over time. Persistent reductions are consistent with the diagnostic stability and life-long impairment observed in many individuals with autism. Multi-modal imaging studies are needed to identify specific fiber tracks contributing to CC reductions. En ligne : http://dx.doi.org/10.1007/s10803-012-1478-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=182

Decreased homotopic interhemispheric functional connectivity in children with autism spectrum disorder / S. YAO in Autism Research, 14-8 (August 2021)  

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An Electrophysiological Investigation of Interhemispheric Transfer Time in Children and Adolescents with High-Functioning Autism Spectrum Disorders / Ann CLAWSON in Journal of Autism and Developmental Disorders, 45-2 (February 2015)  

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Cortical underconnectivity coupled with preserved visuospatial cognition in autism: Evidence from an fMRI study of an embedded figures task / Saudamini Roy DAMARLA in Autism Research, 3-5 (October 2010)  

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Decreased interhemispheric time transfer of visual information in adults with Autistic spectrum disorder using the Poffenberger paradigm / Veema LODHIA in Research in Autism Spectrum Disorders, 43-44 (November 2017)  

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Increased putamen and callosal motor subregion in treatment-naïve boys with Tourette syndrome indicates changes in the bihemispheric motor network / Veit ROESSNER in Journal of Child Psychology and Psychiatry, 52-3 (March 2011)  

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