21 research outputs found

    'Sending Dollars Shows Feeling' - Emotions and Economies in Filipino Migration

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    This paper analyses the conceptualization of gender, relationships, and emotions that underpin ‘care chains’ approaches to Filipino labour migration. In a case study of long‐distance intimacy and economic transfers in an extended Filipino family, I show how contextualizing migration within local understandings of emotion fractures expectations created by care chains accounts. This case instead reveals agency, diversity, and new forms of global subjectivity emerging through long‐distance emotional connections within the translocal field shaped by labour mobility

    An ERP source imaging study of the oddball task in children with Attention Deficit/Hyperactivity Disorder

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    Objective: Children with ADHD have difficulties attending to task-relevant events, which has been consistently associated with reductions in the amplitude of the P3b event-related potential (ERP) component. However, the underlying neural networks involved in this P3b reduction remain elusive. Therefore, this study explored source localization of P3b alterations in children with ADHD, aiming at a more detailed account of attentional difficulties. Methods: Dense array ERPs were obtained for 36 children with ADHD and 49 typically developing children (TD) using an auditory oddball task. The P3b component (310-410 ms) was individually localized with the LAURA distributed linear inverse solution method and compared between groups. Results: The ADHD group showed reduced P3b amplitudes in response to targets compared to the TD group. Differences were located primarily in frontopolar (cinguloopercular network, BA10) and temporoparietal regions (ventral attention network, BA39 and 19) in the left hemisphere. Reductions in P3b amplitudes were related to more inattention and hyperactivity/impulsivity problems in the ADHD group. Conclusions: The results show alterations in both top-down and bottom-up attention-related brain areas, which may underlie P3b amplitude reductions in children with ADHD. Significance: This study provides novel data on both temporal and spatial aspects of dysfunctional attention processes in ADHD

    Neural network topology in ADHD; evidence for maturational delay and default-mode network alterations

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    Objective Attention-deficit/hyperactivity disorder (ADHD) has been associated with widespread brain abnormalities in white and grey matter, affecting not only local, but global functional networks as well. In this study, we explored these functional networks using source-reconstructed electroencephalography in ADHD and typically developing (TD) children. We expected evidence for maturational delay, with underlying abnormalities in the default mode network. Methods Electroencephalograms were recorded in ADHD (n = 42) and TD (n = 43) during rest, and functional connectivity (phase lag index) and graph (minimum spanning tree) parameters were derived. Dependent variables were global and local network metrics in theta, alpha and beta bands. Results We found evidence for a more centralized functional network in ADHD compared to TD children, with decreased diameter in the alpha band (ηp 2 = 0.06) and increased leaf fraction (ηp 2 = 0.11 and 0.08) in the alpha and beta bands, with underlying abnormalities in hub regions of the brain, including default mode network. Conclusions The finding of a more centralized network is in line with maturational delay models of ADHD and should be replicated in longitudinal designs. Significance This study contributes to the literature by combining high temporal and spatial resolution to construct EEG network topology, and associates maturational-delay and default-mode interference hypotheses of ADHD
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