86 recherche sur le mot-clé 'fMRI'

An fMRI study of facial emotion processing in children and adolescents with 22q11.2 deletion syndrome / R. AZUMA in Journal of Neurodevelopmental Disorders, 7-1 (December 2015)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 7-1 (December 2015) . - p.1 Titre : An fMRI study of facial emotion processing in children and adolescents with 22q11.2 deletion syndrome Type de document : Texte imprimé et/ou numérique Auteurs : R. AZUMA, Auteur ; Quinton DEELEY, Auteur ; Linda E. CAMPBELL, Auteur ; Eileen DALY, Auteur ; V. GIAMPIETRO, Auteur ; Michael BRAMMER, Auteur ; K. C. MURPHY, Auteur ; D. G. MURPHY, Auteur Article en page(s) : p.1 Langues : Anglais (eng) Mots-clés : 22q11.2 deletion syndrome (22q11DS)  Children  Emotion  Social cognition  Velo-cardio-facial syndrome (VCFS)  fMRI Index. décimale : PER Périodiques Résumé : BACKGROUND: 22q11.2 deletion syndrome (22q11DS, velo-cardio-facial syndrome [VCFS]) is a genetic disorder associated with interstitial deletions of chromosome 22q11.2. In addition to high rates of neuropsychiatric disorders, children with 22q11DS have impairments of face processing, as well as IQ-independent deficits in visuoperceptual function and social and abstract reasoning. These face-processing deficits may contribute to the social impairments of 22q11DS. However, their neurobiological basis is poorly understood. METHODS: We used event-related functional magnetic resonance imaging (fMRI) to examine neural responses when children with 22q11DS (aged 9-17 years) and healthy controls (aged 8-17 years) incidentally processed neutral expressions and mild (50%) and intense (100%) expressions of fear and disgust. We included 28 right-handed children and adolescents: 14 with 22q11DS and 14 healthy (including nine siblings) controls. RESULTS: Within groups, contrasts showed that individuals significantly activated 'face responsive' areas when viewing neutral faces, including fusiform-extrastriate cortices. Further, within both groups, there was a significant positive linear trend in activation of fusiform-extrastriate cortices and cerebellum to increasing intensities of fear. There were, however, also between-group differences. Children with 22q11DS generally showed reduced activity as compared to controls in brain regions involved in social cognition and emotion processing across emotion types and intensities, including fusiform-extrastriate cortices, anterior cingulate cortex (Brodmann area (BA) 24/32), and superomedial prefrontal cortices (BA 6). Also, an exploratory correlation analysis showed that within 22q11DS children reduced activation was associated with behavioural impairment-social difficulties (measured using the Total Difficulties Score from the Strengths and Difficulties Questionnaire [SDQ]) were significantly negatively correlated with brain activity during fear and disgust processing (respectively) in the left precentral gyrus (BA 4) and in the left fusiform gyrus (FG, BA 19), right lingual gyrus (BA 18), and bilateral cerebellum. CONCLUSIONS: Regions involved in face processing, including fusiform-extrastriate cortices, anterior cingulate gyri, and superomedial prefrontal cortices (BA 6), are activated by facial expressions of fearful, disgusted, and neutral expressions in children with 22q11DS but generally to a lesser degree than in controls. Hypoactivation in these regions may partly explain the social impairments of children with 22q11DS. En ligne : http://dx.doi.org/10.1186/1866-1955-7-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=347 [article] An fMRI study of facial emotion processing in children and adolescents with 22q11.2 deletion syndrome [Texte imprimé et/ou numérique] / R. AZUMA, Auteur ; Quinton DEELEY, Auteur ; Linda E. CAMPBELL, Auteur ; Eileen DALY, Auteur ; V. GIAMPIETRO, Auteur ; Michael BRAMMER, Auteur ; K. C. MURPHY, Auteur ; D. G. MURPHY, Auteur . - p.1. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 7-1 (December 2015) . - p.1 Mots-clés : 22q11.2 deletion syndrome (22q11DS)  Children  Emotion  Social cognition  Velo-cardio-facial syndrome (VCFS)  fMRI Index. décimale : PER Périodiques Résumé : BACKGROUND: 22q11.2 deletion syndrome (22q11DS, velo-cardio-facial syndrome [VCFS]) is a genetic disorder associated with interstitial deletions of chromosome 22q11.2. In addition to high rates of neuropsychiatric disorders, children with 22q11DS have impairments of face processing, as well as IQ-independent deficits in visuoperceptual function and social and abstract reasoning. These face-processing deficits may contribute to the social impairments of 22q11DS. However, their neurobiological basis is poorly understood. METHODS: We used event-related functional magnetic resonance imaging (fMRI) to examine neural responses when children with 22q11DS (aged 9-17 years) and healthy controls (aged 8-17 years) incidentally processed neutral expressions and mild (50%) and intense (100%) expressions of fear and disgust. We included 28 right-handed children and adolescents: 14 with 22q11DS and 14 healthy (including nine siblings) controls. RESULTS: Within groups, contrasts showed that individuals significantly activated 'face responsive' areas when viewing neutral faces, including fusiform-extrastriate cortices. Further, within both groups, there was a significant positive linear trend in activation of fusiform-extrastriate cortices and cerebellum to increasing intensities of fear. There were, however, also between-group differences. Children with 22q11DS generally showed reduced activity as compared to controls in brain regions involved in social cognition and emotion processing across emotion types and intensities, including fusiform-extrastriate cortices, anterior cingulate cortex (Brodmann area (BA) 24/32), and superomedial prefrontal cortices (BA 6). Also, an exploratory correlation analysis showed that within 22q11DS children reduced activation was associated with behavioural impairment-social difficulties (measured using the Total Difficulties Score from the Strengths and Difficulties Questionnaire [SDQ]) were significantly negatively correlated with brain activity during fear and disgust processing (respectively) in the left precentral gyrus (BA 4) and in the left fusiform gyrus (FG, BA 19), right lingual gyrus (BA 18), and bilateral cerebellum. CONCLUSIONS: Regions involved in face processing, including fusiform-extrastriate cortices, anterior cingulate gyri, and superomedial prefrontal cortices (BA 6), are activated by facial expressions of fearful, disgusted, and neutral expressions in children with 22q11DS but generally to a lesser degree than in controls. Hypoactivation in these regions may partly explain the social impairments of children with 22q11DS. En ligne : http://dx.doi.org/10.1186/1866-1955-7-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=347

Deactivation in anterior cingulate cortex during facial processing in young individuals with high familial risk and early development of depression: fMRI findings from the Scottish Bipolar Family Study / Stella W. Y. CHAN in Journal of Child Psychology and Psychiatry, 57-11 (November 2016)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 57-11 (November 2016) . - p.1277-1286 Titre : Deactivation in anterior cingulate cortex during facial processing in young individuals with high familial risk and early development of depression: fMRI findings from the Scottish Bipolar Family Study Type de document : Texte imprimé et/ou numérique Auteurs : Stella W. Y. CHAN, Auteur ; Jessika E. SUSSMANN, Auteur ; Liana ROMANIUK, Auteur ; Tiffany STEWART, Auteur ; Stephen M. LAWRIE, Auteur ; Jeremy HALL, Auteur ; Andrew M. MCINTOSH, Auteur ; Heather C. WHALLEY, Auteur Article en page(s) : p.1277-1286 Langues : Anglais (eng) Mots-clés : Mood disorder  major depressive disorder  fMRI  anterior cingulate  facial recognition  familial risk Index. décimale : PER Périodiques Résumé : Background Studies have identified perturbations in facial processing in bipolar disorder and major depressive disorder (MDD), but their relationship to genetic risk and early development of illness is unclear. Methods The Scottish Bipolar Family Study is a prospective longitudinal investigation examining young individuals (age 16–25) at familial risk of mood disorder. Participants underwent functional MRI using an implicit facial processing task employing angry and neutral faces. An explicit facial expression recognition task was completed outside the scanner. Clinical outcomes obtained 2 years after the scan were used to categorise participants into controls (n = 54), high-risk individuals who had developed MDD (HR MDD; n = 30) and high-risk individuals who remained well (HR Well, n = 43). Results All groups demonstrated activation patterns typically observed during facial processing, including activation of the amygdala, hippocampus, fusiform gyrus and middle frontal regions. Notably, the HR MDD group showed reduced activation of the anterior cingulate gyrus versus both the control and HR Well group for angry faces, and versus the HR Well group for neutral faces. Outside the scanner, the HR MDD group was less accurate in recognising fearful expressions than the HR Well group. Conclusions Here, we demonstrate functional abnormalities of the anterior cingulate cortex alongside facial emotional recognition deficits in high-risk individuals in the early stages of depression compared with both controls and at-risk individuals who remained well. These neural changes were associated with a current or future diagnosis of MDD and were not simply associated with increased familial risk. En ligne : http://dx.doi.org/10.1111/jcpp.12591 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=295 [article] Deactivation in anterior cingulate cortex during facial processing in young individuals with high familial risk and early development of depression: fMRI findings from the Scottish Bipolar Family Study [Texte imprimé et/ou numérique] / Stella W. Y. CHAN, Auteur ; Jessika E. SUSSMANN, Auteur ; Liana ROMANIUK, Auteur ; Tiffany STEWART, Auteur ; Stephen M. LAWRIE, Auteur ; Jeremy HALL, Auteur ; Andrew M. MCINTOSH, Auteur ; Heather C. WHALLEY, Auteur . - p.1277-1286. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 57-11 (November 2016) . - p.1277-1286 Mots-clés : Mood disorder  major depressive disorder  fMRI  anterior cingulate  facial recognition  familial risk Index. décimale : PER Périodiques Résumé : Background Studies have identified perturbations in facial processing in bipolar disorder and major depressive disorder (MDD), but their relationship to genetic risk and early development of illness is unclear. Methods The Scottish Bipolar Family Study is a prospective longitudinal investigation examining young individuals (age 16–25) at familial risk of mood disorder. Participants underwent functional MRI using an implicit facial processing task employing angry and neutral faces. An explicit facial expression recognition task was completed outside the scanner. Clinical outcomes obtained 2 years after the scan were used to categorise participants into controls (n = 54), high-risk individuals who had developed MDD (HR MDD; n = 30) and high-risk individuals who remained well (HR Well, n = 43). Results All groups demonstrated activation patterns typically observed during facial processing, including activation of the amygdala, hippocampus, fusiform gyrus and middle frontal regions. Notably, the HR MDD group showed reduced activation of the anterior cingulate gyrus versus both the control and HR Well group for angry faces, and versus the HR Well group for neutral faces. Outside the scanner, the HR MDD group was less accurate in recognising fearful expressions than the HR Well group. Conclusions Here, we demonstrate functional abnormalities of the anterior cingulate cortex alongside facial emotional recognition deficits in high-risk individuals in the early stages of depression compared with both controls and at-risk individuals who remained well. These neural changes were associated with a current or future diagnosis of MDD and were not simply associated with increased familial risk. En ligne : http://dx.doi.org/10.1111/jcpp.12591 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=295

Emotional maltreatment and neglect impact neural activation upon exclusion in early and mid-adolescence: An event-related fMRI study / Charlotte C. SCHULZ in Development and Psychopathology, 34-2 (May 2022)  

Public ISBD [article]  inDevelopment and Psychopathology > 34-2 (May 2022) . - 573-585 Titre : Emotional maltreatment and neglect impact neural activation upon exclusion in early and mid-adolescence: An event-related fMRI study Type de document : Texte imprimé et/ou numérique Auteurs : Charlotte C. SCHULZ, Auteur ; Kai VON KLITZING, Auteur ; Lorenz DESERNO, Auteur ; Margaret A. SHERIDAN, Auteur ; Michael J. CROWLEY, Auteur ; Margerete J. S. SCHOETT, Auteur ; Ferdinand HOFFMANN, Auteur ; Arno VILLRINGER, Auteur ; Pascal VRTI?KA, Auteur ; Lars O. WHITE, Auteur Article en page(s) : 573-585 Langues : Anglais (eng) Mots-clés : adolescence  emotional maltreatment  neglect  fMRI  social exclusion Index. décimale : PER Périodiques Résumé : Child maltreatment gives rise to atypical patterns of social functioning with peers which might be particularly pronounced in early adolescence when peer influence typically peaks. Yet, few neuroimaging studies in adolescents use peer interaction paradigms to parse neural correlates of distinct maltreatment exposures. This fMRI study examines effects of abuse, neglect, and emotional maltreatment (EM) among 98 youth (n = 58 maltreated; n = 40 matched controls) using an event-related Cyberball paradigm affording assessment of both social exclusion and inclusion across early and mid-adolescence (?13.5 years, n = 50; >13.5 years, n = 48). Younger adolescents showed increased activation to social exclusion versus inclusion in regions implicated in mentalizing (e.g., superior temporal gyrus). Individual exposure-specific analyses suggested that neglect and EM coincided with less reduction of activation to social exclusion relative to inclusion in the dorsal anterior cingulate cortex/pre-supplementary motor area (dACC/pre-SMA) among younger versus older adolescents. Integrative follow-up analyses showed that EM accounted for this dACC/pre-SMA activation pattern over and above other exposures. Moreover, age-independent results within respective exposure groups revealed that greater magnitude of neglect predicted blunted exclusion-related activity in the parahippocampal gyrus, while EM predicted increased activation to social exclusion in the precuneus/posterior cingulate cortex. En ligne : http://dx.doi.org/10.1017/s0954579421001681 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=474 [article] Emotional maltreatment and neglect impact neural activation upon exclusion in early and mid-adolescence: An event-related fMRI study [Texte imprimé et/ou numérique] / Charlotte C. SCHULZ, Auteur ; Kai VON KLITZING, Auteur ; Lorenz DESERNO, Auteur ; Margaret A. SHERIDAN, Auteur ; Michael J. CROWLEY, Auteur ; Margerete J. S. SCHOETT, Auteur ; Ferdinand HOFFMANN, Auteur ; Arno VILLRINGER, Auteur ; Pascal VRTI?KA, Auteur ; Lars O. WHITE, Auteur . - 573-585. Langues : Anglais (eng) in Development and Psychopathology > 34-2 (May 2022) . - 573-585 Mots-clés : adolescence  emotional maltreatment  neglect  fMRI  social exclusion Index. décimale : PER Périodiques Résumé : Child maltreatment gives rise to atypical patterns of social functioning with peers which might be particularly pronounced in early adolescence when peer influence typically peaks. Yet, few neuroimaging studies in adolescents use peer interaction paradigms to parse neural correlates of distinct maltreatment exposures. This fMRI study examines effects of abuse, neglect, and emotional maltreatment (EM) among 98 youth (n = 58 maltreated; n = 40 matched controls) using an event-related Cyberball paradigm affording assessment of both social exclusion and inclusion across early and mid-adolescence (?13.5 years, n = 50; >13.5 years, n = 48). Younger adolescents showed increased activation to social exclusion versus inclusion in regions implicated in mentalizing (e.g., superior temporal gyrus). Individual exposure-specific analyses suggested that neglect and EM coincided with less reduction of activation to social exclusion relative to inclusion in the dorsal anterior cingulate cortex/pre-supplementary motor area (dACC/pre-SMA) among younger versus older adolescents. Integrative follow-up analyses showed that EM accounted for this dACC/pre-SMA activation pattern over and above other exposures. Moreover, age-independent results within respective exposure groups revealed that greater magnitude of neglect predicted blunted exclusion-related activity in the parahippocampal gyrus, while EM predicted increased activation to social exclusion in the precuneus/posterior cingulate cortex. En ligne : http://dx.doi.org/10.1017/s0954579421001681 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=474

Functional brain plasticity following childhood maltreatment: A longitudinal fMRI investigation of autobiographical memory processing / V. B. PUETZ in Development and Psychopathology, 35-3 (August 2023)  

Public ISBD [article]  inDevelopment and Psychopathology > 35-3 (August 2023) . - p.1382-1389 Titre : Functional brain plasticity following childhood maltreatment: A longitudinal fMRI investigation of autobiographical memory processing Type de document : Texte imprimé et/ou numérique Auteurs : V. B. PUETZ, Auteur ; E. VIDING, Auteur ; E. A. MAGUIRE, Auteur ; A. MECHELLI, Auteur ; D. ARMBRUSTER-GENÇ, Auteur ; M. SHARP, Auteur ; G. RANKIN, Auteur ; M. I. GERIN, Auteur ; E. J. MCCRORY, Auteur Article en page(s) : p.1382-1389 Langues : Anglais (eng) Mots-clés : autobiographical memory  brain plasticity  childhood maltreatment  fMRI  longitudinal study Index. décimale : PER Périodiques Résumé : Altered autobiographical memory (ABM) processing characterizes some individuals with experiences of childhood maltreatment. This fMRI study of ABM processing evaluated potential developmental plasticity in neural functioning following maltreatment. Adolescents with (N = 19; MT group) and without (N = 18; Non-MT group) documented childhood maltreatment recalled specific ABMs in response to emotionally valenced cue words during fMRI at baseline (age 12.71 + 1.48) and follow-up (14.88 + 1.53 years). Psychological assessments were collected at both timepoints. Longitudinal analyses were carried out with BOLD signal changes during ABM recall and psychopathology to investigate change over time. In both groups there was relative stability of the ABM brain network, with some developmental maturational changes observed in cortical midline structures (ventromedial PFC (vmPFC), posterior cingulate cortex (pCC), and retrosplenial cortex (rSC). Significantly increased activation of the right rSC was observed only in the MT group, which was associated with improved psychological functioning. Baseline group differences in relation to hippocampal functioning, were not detected at follow-up. This study provides preliminary empirical evidence of functional developmental plasticity in children with documented maltreatment experience using fMRI. This suggests that altered patterns of brain function, associated with maltreatment experience, are not fixed and may reflect the potential to track a neural basis of resilience. En ligne : http://dx.doi.org/10.1017/S0954579421001292 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=511 [article] Functional brain plasticity following childhood maltreatment: A longitudinal fMRI investigation of autobiographical memory processing [Texte imprimé et/ou numérique] / V. B. PUETZ, Auteur ; E. VIDING, Auteur ; E. A. MAGUIRE, Auteur ; A. MECHELLI, Auteur ; D. ARMBRUSTER-GENÇ, Auteur ; M. SHARP, Auteur ; G. RANKIN, Auteur ; M. I. GERIN, Auteur ; E. J. MCCRORY, Auteur . - p.1382-1389. Langues : Anglais (eng) in Development and Psychopathology > 35-3 (August 2023) . - p.1382-1389 Mots-clés : autobiographical memory  brain plasticity  childhood maltreatment  fMRI  longitudinal study Index. décimale : PER Périodiques Résumé : Altered autobiographical memory (ABM) processing characterizes some individuals with experiences of childhood maltreatment. This fMRI study of ABM processing evaluated potential developmental plasticity in neural functioning following maltreatment. Adolescents with (N = 19; MT group) and without (N = 18; Non-MT group) documented childhood maltreatment recalled specific ABMs in response to emotionally valenced cue words during fMRI at baseline (age 12.71 + 1.48) and follow-up (14.88 + 1.53 years). Psychological assessments were collected at both timepoints. Longitudinal analyses were carried out with BOLD signal changes during ABM recall and psychopathology to investigate change over time. In both groups there was relative stability of the ABM brain network, with some developmental maturational changes observed in cortical midline structures (ventromedial PFC (vmPFC), posterior cingulate cortex (pCC), and retrosplenial cortex (rSC). Significantly increased activation of the right rSC was observed only in the MT group, which was associated with improved psychological functioning. Baseline group differences in relation to hippocampal functioning, were not detected at follow-up. This study provides preliminary empirical evidence of functional developmental plasticity in children with documented maltreatment experience using fMRI. This suggests that altered patterns of brain function, associated with maltreatment experience, are not fixed and may reflect the potential to track a neural basis of resilience. En ligne : http://dx.doi.org/10.1017/S0954579421001292 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=511

Impact of chronic intranasal oxytocin administration on face expression processing in autistic children: a randomized controlled trial using fMRI / Nicky DANIELS ; Stephanie VAN DER DONCK ; Tiffany TANG ; Jellina PRINSEN ; Elahe' YARGHOLI ; Jean STEYAERT ; Kaat ALAERTS ; Bart BOETS in Molecular Autism, 15 (2024)  

Public ISBD [article]  inMolecular Autism > 15 (2024) . - 53 Titre : Impact of chronic intranasal oxytocin administration on face expression processing in autistic children: a randomized controlled trial using fMRI Type de document : Texte imprimé et/ou numérique Auteurs : Nicky DANIELS, Auteur ; Stephanie VAN DER DONCK, Auteur ; Tiffany TANG, Auteur ; Jellina PRINSEN, Auteur ; Elahe' YARGHOLI, Auteur ; Jean STEYAERT, Auteur ; Kaat ALAERTS, Auteur ; Bart BOETS, Auteur Article en page(s) : 53 Langues : Anglais (eng) Mots-clés : Humans  *Oxytocin/administration & dosage/therapeutic use  *Administration, Intranasal  *Magnetic Resonance Imaging  Male  *Autistic Disorder/drug therapy/physiopathology  Child  Female  *Facial Expression  Double-Blind Method  Brain/diagnostic imaging/drug effects  Facial Recognition/drug effects  Adolescent  Autism  Chronic oxytocin administration  Expressive faces  Face processing  fMRI  of interest. Index. décimale : PER Périodiques Résumé : BACKGROUND: Difficulties with (non-verbal) social communication, including facial expression processing, constitute a hallmark of autism. Intranasal administration of oxytocin has been considered a potential therapeutic option for improving social difficulties in autism, either by enhancing the salience of social cues or by reducing the social stress and anxiety experienced in social encounters. METHODS: We recorded fMRI brain activity while presenting neutral, fearful and scrambled faces, to compare the neural face processing signature of autistic children (n = 58) with that of matched non-autistic controls (n = 38). Next, in the autistic children group, we implemented this fMRI face processing task in a double-blind, placebo-controlled, multiple-dose oxytocin clinical trial, to evaluate the impact of four-week repeated oxytocin administration (24 IU daily dose) on brain activity in face processing regions. RESULTS: No significant diagnostic-group differences were identified between autistic versus non-autistic children with regard to neural face processing. Furthermore, no significant treatment effects were found in the oxytocin clinical trial. However, exploratory analyses (uncorrected for multiple comparisons) demonstrated decreases in brain activity in the left superior temporal sulcus (STS) and inferior frontal region in the oxytocin compared to the placebo group, and change-from-baseline analyses in the oxytocin group revealed significantly reduced neural activity in the core face-processing network (STS, inferior occipital, and posterior fusiform), as well as in amygdala and inferior frontal region. CONCLUSION: These findings suggest an attenuating effect of multiple-dose oxytocin administration on neural face processing, potentially supporting the anxiolytic account of oxytocin. En ligne : https://dx.doi.org/10.1186/s13229-024-00635-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=555 [article] Impact of chronic intranasal oxytocin administration on face expression processing in autistic children: a randomized controlled trial using fMRI [Texte imprimé et/ou numérique] / Nicky DANIELS, Auteur ; Stephanie VAN DER DONCK, Auteur ; Tiffany TANG, Auteur ; Jellina PRINSEN, Auteur ; Elahe' YARGHOLI, Auteur ; Jean STEYAERT, Auteur ; Kaat ALAERTS, Auteur ; Bart BOETS, Auteur . - 53. Langues : Anglais (eng) in Molecular Autism > 15 (2024) . - 53 Mots-clés : Humans  *Oxytocin/administration & dosage/therapeutic use  *Administration, Intranasal  *Magnetic Resonance Imaging  Male  *Autistic Disorder/drug therapy/physiopathology  Child  Female  *Facial Expression  Double-Blind Method  Brain/diagnostic imaging/drug effects  Facial Recognition/drug effects  Adolescent  Autism  Chronic oxytocin administration  Expressive faces  Face processing  fMRI  of interest. Index. décimale : PER Périodiques Résumé : BACKGROUND: Difficulties with (non-verbal) social communication, including facial expression processing, constitute a hallmark of autism. Intranasal administration of oxytocin has been considered a potential therapeutic option for improving social difficulties in autism, either by enhancing the salience of social cues or by reducing the social stress and anxiety experienced in social encounters. METHODS: We recorded fMRI brain activity while presenting neutral, fearful and scrambled faces, to compare the neural face processing signature of autistic children (n = 58) with that of matched non-autistic controls (n = 38). Next, in the autistic children group, we implemented this fMRI face processing task in a double-blind, placebo-controlled, multiple-dose oxytocin clinical trial, to evaluate the impact of four-week repeated oxytocin administration (24 IU daily dose) on brain activity in face processing regions. RESULTS: No significant diagnostic-group differences were identified between autistic versus non-autistic children with regard to neural face processing. Furthermore, no significant treatment effects were found in the oxytocin clinical trial. However, exploratory analyses (uncorrected for multiple comparisons) demonstrated decreases in brain activity in the left superior temporal sulcus (STS) and inferior frontal region in the oxytocin compared to the placebo group, and change-from-baseline analyses in the oxytocin group revealed significantly reduced neural activity in the core face-processing network (STS, inferior occipital, and posterior fusiform), as well as in amygdala and inferior frontal region. CONCLUSION: These findings suggest an attenuating effect of multiple-dose oxytocin administration on neural face processing, potentially supporting the anxiolytic account of oxytocin. En ligne : https://dx.doi.org/10.1186/s13229-024-00635-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=555

Oscillatory motor patterning is impaired in neurofibromatosis type 1: a behavioural, EEG and fMRI study / G. SILVA in Journal of Neurodevelopmental Disorders, 10-1 (December 2018)  

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Typical and Atypical Neurodevelopment for Face Specialization: An fMRI Study / Jane E. JOSEPH in Journal of Autism and Developmental Disorders, 45-6 (June 2015)  

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ADHD-related sex differences in fronto-subcortical intrinsic functional connectivity and associations with delay discounting / K. S. ROSCH in Journal of Neurodevelopmental Disorders, 10-1 (December 2018)  

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Adolescents' neural reactivity to acute psychosocial stress: dysfunctional regulation habits are linked to temporal gyrus response / Sabrina GOLDE in Development and Psychopathology, 35-1 (February 2023)  

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Age-related changes in neural responses to sensory stimulation in autism: a cross-sectional study / Kaitlin K. CUMMINGS ; Susan Y. BOOKHEIMER ; Mirella DAPRETTO ; Shulamite A. GREEN in Molecular Autism, 14 (2023)  

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