Violence exposure and neural systems underlying working memory for emotional stimuli in youth / Jessica L. JENNESS in Development and Psychopathology, 30-4 (October 2018)  

Public ISBD [article]  inDevelopment and Psychopathology > 30-4 (October 2018) . - p.1517-1528 Titre : Violence exposure and neural systems underlying working memory for emotional stimuli in youth Type de document : Texte imprimé et/ou numérique Auteurs : Jessica L. JENNESS, Auteur ; Maya L. ROSEN, Auteur ; Kelly A. SAMBROOK, Auteur ; Meg J. DENNISON, Auteur ; Hilary K. LAMBERT, Auteur ; Margaret A. SHERIDAN, Auteur ; Katie A. MCLAUGHLIN, Auteur Article en page(s) : p.1517-1528 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Violence exposure during childhood is common and associated with poor cognitive and academic functioning. However, little is known about how violence exposure influences cognitive processes that might contribute to these disparities, such as working memory, or their neural underpinnings, particularly for cognitive processes that occur in emotionally salient contexts. We address this gap in a sample of 54 participants aged 8 to 19 years (50% female), half with exposure to interpersonal violence. Participants completed a delayed match to sample task for emotional faces while undergoing functional magnetic resonance imaging scanning. Violence-exposed youth performed worse than controls on happy and neutral, but not angry, trials. In whole-brain analysis, violence-exposed youth had reduced activation in the left middle frontal gyrus and right intraparietal sulcus during encoding and the left superior temporal sulcus and temporal–parietal junction during retrieval compared to control youth. Reduced activation in the left middle frontal gyrus during encoding and the left superior temporal sulcus during retrieval mediated the association between violence exposure and task performance. Violence exposure influences the frontoparietal network that supports working memory as well as regions involved in facial processing during working memory for emotional stimuli. Reduced neural recruitment in these regions may explain atypical patterns of cognitive processing seen among violence-exposed youth, particularly within emotional contexts. En ligne : http://dx.doi.org/10.1017/S0954579417001638 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=368 [article] Violence exposure and neural systems underlying working memory for emotional stimuli in youth [Texte imprimé et/ou numérique] / Jessica L. JENNESS, Auteur ; Maya L. ROSEN, Auteur ; Kelly A. SAMBROOK, Auteur ; Meg J. DENNISON, Auteur ; Hilary K. LAMBERT, Auteur ; Margaret A. SHERIDAN, Auteur ; Katie A. MCLAUGHLIN, Auteur . - p.1517-1528. Langues : Anglais (eng) in Development and Psychopathology > 30-4 (October 2018) . - p.1517-1528 Index. décimale : PER Périodiques Résumé : Violence exposure during childhood is common and associated with poor cognitive and academic functioning. However, little is known about how violence exposure influences cognitive processes that might contribute to these disparities, such as working memory, or their neural underpinnings, particularly for cognitive processes that occur in emotionally salient contexts. We address this gap in a sample of 54 participants aged 8 to 19 years (50% female), half with exposure to interpersonal violence. Participants completed a delayed match to sample task for emotional faces while undergoing functional magnetic resonance imaging scanning. Violence-exposed youth performed worse than controls on happy and neutral, but not angry, trials. In whole-brain analysis, violence-exposed youth had reduced activation in the left middle frontal gyrus and right intraparietal sulcus during encoding and the left superior temporal sulcus and temporal–parietal junction during retrieval compared to control youth. Reduced activation in the left middle frontal gyrus during encoding and the left superior temporal sulcus during retrieval mediated the association between violence exposure and task performance. Violence exposure influences the frontoparietal network that supports working memory as well as regions involved in facial processing during working memory for emotional stimuli. Reduced neural recruitment in these regions may explain atypical patterns of cognitive processing seen among violence-exposed youth, particularly within emotional contexts. En ligne : http://dx.doi.org/10.1017/S0954579417001638 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=368

Within-person fluctuations in stressful life events, sleep, and anxiety and depression symptoms during adolescence: a multiwave prospective study / Constanza M. VIDAL BUSTAMANTE in Journal of Child Psychology and Psychiatry, 61-10 (October 2020)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 61-10 (October 2020) . - p.1116-1125 Titre : Within-person fluctuations in stressful life events, sleep, and anxiety and depression symptoms during adolescence: a multiwave prospective study Type de document : Texte imprimé et/ou numérique Auteurs : Constanza M. VIDAL BUSTAMANTE, Auteur ; Alexandra M. RODMAN, Auteur ; Meg J. DENNISON, Auteur ; John C. FLOURNOY, Auteur ; Patrick MAIR, Auteur ; Katie A. MCLAUGHLIN, Auteur Article en page(s) : p.1116-1125 Langues : Anglais (eng) Mots-clés : Adolescence  actigraphy  anxiety  depression  longitudinal  sleep  stress Index. décimale : PER Périodiques Résumé : BACKGROUND: Adolescence is characterized by substantial changes in sleep behavior, heightened exposure to stressful life events (SLEs), and elevated risk for internalizing problems like anxiety and depression. Although SLEs are consistently associated with the onset of internalizing psychopathology, the mechanisms underlying this relationship remain poorly understood, especially at the within-person level. Here, we leverage a high-frequency longitudinal design to examine sleep as a potential mechanism linking SLEs to increases in anxiety and depression symptoms over a one-year period. METHODS: Thirty female adolescents aged 15-17 years completed 12 monthly in-laboratory assessments of exposure to SLEs and symptoms of anxiety and depression (n = 355 monthly assessments), and wore an actigraphy wristband for continuous monitoring of sleep for the duration of the study (n = 6,824 sleep days). Multilevel models examined concurrent and lagged within-person associations between SLEs, sleep duration and timing regularity, and anxiety and depression symptoms. RESULTS: Within-person fluctuations in SLEs were associated with variability in sleep duration both concurrently and prospectively, such that when adolescents experienced greater SLEs than was typical for them, they exhibited more variable sleep duration that same month as well as the following month. In turn, within-person increases in sleep duration variability predicted greater anxiety symptoms in the same month and mediated the association between SLEs and anxiety. CONCLUSIONS: These findings highlight sleep disruptions as a mechanism underlying the longitudinal associations between SLEs and anxiety symptoms, and suggest that interventions promoting sleep schedule consistency may help mitigate risk for stress-related psychopathology in adolescence. En ligne : http://dx.doi.org/10.1111/jcpp.13234 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=432 [article] Within-person fluctuations in stressful life events, sleep, and anxiety and depression symptoms during adolescence: a multiwave prospective study [Texte imprimé et/ou numérique] / Constanza M. VIDAL BUSTAMANTE, Auteur ; Alexandra M. RODMAN, Auteur ; Meg J. DENNISON, Auteur ; John C. FLOURNOY, Auteur ; Patrick MAIR, Auteur ; Katie A. MCLAUGHLIN, Auteur . - p.1116-1125. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 61-10 (October 2020) . - p.1116-1125 Mots-clés : Adolescence  actigraphy  anxiety  depression  longitudinal  sleep  stress Index. décimale : PER Périodiques Résumé : BACKGROUND: Adolescence is characterized by substantial changes in sleep behavior, heightened exposure to stressful life events (SLEs), and elevated risk for internalizing problems like anxiety and depression. Although SLEs are consistently associated with the onset of internalizing psychopathology, the mechanisms underlying this relationship remain poorly understood, especially at the within-person level. Here, we leverage a high-frequency longitudinal design to examine sleep as a potential mechanism linking SLEs to increases in anxiety and depression symptoms over a one-year period. METHODS: Thirty female adolescents aged 15-17 years completed 12 monthly in-laboratory assessments of exposure to SLEs and symptoms of anxiety and depression (n = 355 monthly assessments), and wore an actigraphy wristband for continuous monitoring of sleep for the duration of the study (n = 6,824 sleep days). Multilevel models examined concurrent and lagged within-person associations between SLEs, sleep duration and timing regularity, and anxiety and depression symptoms. RESULTS: Within-person fluctuations in SLEs were associated with variability in sleep duration both concurrently and prospectively, such that when adolescents experienced greater SLEs than was typical for them, they exhibited more variable sleep duration that same month as well as the following month. In turn, within-person increases in sleep duration variability predicted greater anxiety symptoms in the same month and mediated the association between SLEs and anxiety. CONCLUSIONS: These findings highlight sleep disruptions as a mechanism underlying the longitudinal associations between SLEs and anxiety symptoms, and suggest that interventions promoting sleep schedule consistency may help mitigate risk for stress-related psychopathology in adolescence. En ligne : http://dx.doi.org/10.1111/jcpp.13234 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=432

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