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Auteur João F. GUASSI MOREIRA |
Documents disponibles écrits par cet auteur (2)



Early life adversity is associated with greater similarity in neural representations of ambiguous and threatening stimuli / Natalie M. SARAGOSA-HARRIS in Development and Psychopathology, 37-2 (May 2025)
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[article]
Titre : Early life adversity is associated with greater similarity in neural representations of ambiguous and threatening stimuli Type de document : Texte imprimé et/ou numérique Auteurs : Natalie M. SARAGOSA-HARRIS, Auteur ; João F. GUASSI MOREIRA, Auteur ; Yael WAIZMAN, Auteur ; Anna SEDYKIN, Auteur ; Tara S. PERIS, Auteur ; Jennifer A. SILVERS, Auteur Article en page(s) : p.802-814 Langues : Anglais (eng) Mots-clés : ambiguity tolerance early life adversity representational similarity analysis threat hypervigilance valence bias Index. décimale : PER Périodiques Résumé : Exposure to early life adversity (ELA) is hypothesized to sensitize threat-responsive neural circuitry. This may lead individuals to overestimate threat in the face of ambiguity, a cognitive-behavioral phenotype linked to poor mental health. The tendency to process ambiguity as threatening may stem from difficulty distinguishing between ambiguous and threatening stimuli. However, it is unknown how exposure to ELA relates to neural representations of ambiguous and threatening stimuli, or how processing of ambiguity following ELA relates to psychosocial functioning. The current fMRI study examined multivariate representations of threatening and ambiguous social cues in 41 emerging adults (aged 18 to 19 years). Using representational similarity analysis, we assessed neural representations of ambiguous and threatening images within affective neural circuitry and tested whether similarity in these representations varied by ELA exposure. Greater exposure to ELA was associated with greater similarity in neural representations of ambiguous and threatening images. Moreover, individual differences in processing ambiguity related to global functioning, an association that varied as a function of ELA. By evidencing reduced neural differentiation between ambiguous and threatening cues in ELA-exposed emerging adults and linking behavioral responses to ambiguity to psychosocial wellbeing, these findings have important implications for future intervention work in at-risk, ELA-exposed populations. En ligne : https://dx.doi.org/10.1017/S0954579424000683 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=552
in Development and Psychopathology > 37-2 (May 2025) . - p.802-814[article] Early life adversity is associated with greater similarity in neural representations of ambiguous and threatening stimuli [Texte imprimé et/ou numérique] / Natalie M. SARAGOSA-HARRIS, Auteur ; João F. GUASSI MOREIRA, Auteur ; Yael WAIZMAN, Auteur ; Anna SEDYKIN, Auteur ; Tara S. PERIS, Auteur ; Jennifer A. SILVERS, Auteur . - p.802-814.
Langues : Anglais (eng)
in Development and Psychopathology > 37-2 (May 2025) . - p.802-814
Mots-clés : ambiguity tolerance early life adversity representational similarity analysis threat hypervigilance valence bias Index. décimale : PER Périodiques Résumé : Exposure to early life adversity (ELA) is hypothesized to sensitize threat-responsive neural circuitry. This may lead individuals to overestimate threat in the face of ambiguity, a cognitive-behavioral phenotype linked to poor mental health. The tendency to process ambiguity as threatening may stem from difficulty distinguishing between ambiguous and threatening stimuli. However, it is unknown how exposure to ELA relates to neural representations of ambiguous and threatening stimuli, or how processing of ambiguity following ELA relates to psychosocial functioning. The current fMRI study examined multivariate representations of threatening and ambiguous social cues in 41 emerging adults (aged 18 to 19 years). Using representational similarity analysis, we assessed neural representations of ambiguous and threatening images within affective neural circuitry and tested whether similarity in these representations varied by ELA exposure. Greater exposure to ELA was associated with greater similarity in neural representations of ambiguous and threatening images. Moreover, individual differences in processing ambiguity related to global functioning, an association that varied as a function of ELA. By evidencing reduced neural differentiation between ambiguous and threatening cues in ELA-exposed emerging adults and linking behavioral responses to ambiguity to psychosocial wellbeing, these findings have important implications for future intervention work in at-risk, ELA-exposed populations. En ligne : https://dx.doi.org/10.1017/S0954579424000683 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=552 Sensory processing challenges as a novel link between early caregiving experiences and mental health / Laura A. ALBA ; Kaitlin K. CUMMINGS ; Jiwon JUNG ; Yael H. WAIZMAN ; João F. GUASSI MOREIRA ; Natalie M. SARAGOSA-HARRIS ; Emilia NINOVA ; Jill M. WATERMAN ; Audra K. LANGLEY ; Nim TOTTENHAM ; Jennifer A. SILVERS ; Shulamite A. GREEN in Development and Psychopathology, 35-4 (October 2023)
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[article]
Titre : Sensory processing challenges as a novel link between early caregiving experiences and mental health Type de document : Texte imprimé et/ou numérique Auteurs : Laura A. ALBA, Auteur ; Kaitlin K. CUMMINGS, Auteur ; Jiwon JUNG, Auteur ; Yael H. WAIZMAN, Auteur ; João F. GUASSI MOREIRA, Auteur ; Natalie M. SARAGOSA-HARRIS, Auteur ; Emilia NINOVA, Auteur ; Jill M. WATERMAN, Auteur ; Audra K. LANGLEY, Auteur ; Nim TOTTENHAM, Auteur ; Jennifer A. SILVERS, Auteur ; Shulamite A. GREEN, Auteur Article en page(s) : p.1968-1981 Langues : Anglais (eng) Mots-clés : adolescence early caregiving adversity mental health sensory over-responsivity sensory processing Index. décimale : PER Périodiques Résumé : Early caregiving adversity (ECA) is associated with elevated psychological symptomatology. While neurobehavioral ECA research has focused on socioemotional and cognitive development, ECA may also increase risk for ?low-level? sensory processing challenges. However, no prior work has compared how diverse ECA exposures differentially relate to sensory processing, or, critically, how this might influence psychological outcomes. We examined sensory processing challenges in 183 8-17-year-old youth with and without histories of institutional (orphanage) or foster caregiving, with a particular focus on sensory over-responsivity (SOR), a pattern of intensified responses to sensory stimuli that may negatively impact mental health. We further tested whether sensory processing challenges are linked to elevated internalizing and externalizing symptoms common in ECA-exposed youth. Relative to nonadopted comparison youth, both groups of ECA-exposed youth had elevated sensory processing challenges, including SOR, and also had heightened internalizing and externalizing symptoms. Additionally, we found significant indirect effects of ECA on internalizing and externalizing symptoms through both general sensory processing challenges and SOR, covarying for age and sex assigned at birth. These findings suggest multiple forms of ECA confer risk for sensory processing challenges that may contribute to mental health outcomes, and motivate continuing examination of these symptoms, with possible long-term implications for screening and treatment following ECA. En ligne : https://dx.doi.org/10.1017/S0954579422000633 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=515
in Development and Psychopathology > 35-4 (October 2023) . - p.1968-1981[article] Sensory processing challenges as a novel link between early caregiving experiences and mental health [Texte imprimé et/ou numérique] / Laura A. ALBA, Auteur ; Kaitlin K. CUMMINGS, Auteur ; Jiwon JUNG, Auteur ; Yael H. WAIZMAN, Auteur ; João F. GUASSI MOREIRA, Auteur ; Natalie M. SARAGOSA-HARRIS, Auteur ; Emilia NINOVA, Auteur ; Jill M. WATERMAN, Auteur ; Audra K. LANGLEY, Auteur ; Nim TOTTENHAM, Auteur ; Jennifer A. SILVERS, Auteur ; Shulamite A. GREEN, Auteur . - p.1968-1981.
Langues : Anglais (eng)
in Development and Psychopathology > 35-4 (October 2023) . - p.1968-1981
Mots-clés : adolescence early caregiving adversity mental health sensory over-responsivity sensory processing Index. décimale : PER Périodiques Résumé : Early caregiving adversity (ECA) is associated with elevated psychological symptomatology. While neurobehavioral ECA research has focused on socioemotional and cognitive development, ECA may also increase risk for ?low-level? sensory processing challenges. However, no prior work has compared how diverse ECA exposures differentially relate to sensory processing, or, critically, how this might influence psychological outcomes. We examined sensory processing challenges in 183 8-17-year-old youth with and without histories of institutional (orphanage) or foster caregiving, with a particular focus on sensory over-responsivity (SOR), a pattern of intensified responses to sensory stimuli that may negatively impact mental health. We further tested whether sensory processing challenges are linked to elevated internalizing and externalizing symptoms common in ECA-exposed youth. Relative to nonadopted comparison youth, both groups of ECA-exposed youth had elevated sensory processing challenges, including SOR, and also had heightened internalizing and externalizing symptoms. Additionally, we found significant indirect effects of ECA on internalizing and externalizing symptoms through both general sensory processing challenges and SOR, covarying for age and sex assigned at birth. These findings suggest multiple forms of ECA confer risk for sensory processing challenges that may contribute to mental health outcomes, and motivate continuing examination of these symptoms, with possible long-term implications for screening and treatment following ECA. En ligne : https://dx.doi.org/10.1017/S0954579422000633 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=515