ESS - NEU - Neurofisiologia
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Browsing ESS - NEU - Neurofisiologia by Author "Barbosa, Fernando"
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- Effects of working memory training on depressive symptoms and frontal alpha asymmetry: a pilot studyPublication . Campos, Carlos; Paiva, Tiago; Ribeiro, Luís; Tripologos, Sofia; Barbosa, Fernando; Tavares, Diana; Rocha, NunoTo assess the effects of working memory training (WMT) on depressive symptoms and frontal alpha asymmetry of young adults with moderate-severe depression. : 30 participants were randomly allocated to the WMT or control groups. Two subjects dropped out and one participant was excluded from EEG analysis.The WMT group completed 5 sessions of automatically adjusted n-back training (starting from 2-back) and the control group only performed 1-back trials. Main outcome measures were self reported depressive symptoms and frontal alpha asymmetry (pre- and post-training). There was a significant time*group interaction for self-reported depression (p = .047, ηp² = .144) and F4-F3 alpha asymmetry (p = .043, ηp² = .153). Post-hoc analysis revealed significant improvements in depression on the WMT group (p < .001) and non-significant findings regarding F4-F3 alpha asymmetry. There was no significant interaction for F8-F7 alpha asymmetry (p = .115, ηp² = .096). WMT may be an effective tool to reduce depressive symptoms. Frontal alpha asymmetry should be explored as a neurophysiological outcome measure of cognitive training efficacy.
- Refining the link between psychopathy, antisocial behavior, and empathy: a meta-analytical approach across different conceptual frameworksPublication . Campos, Carlos; Pasion, Rita; Azeredo, Andreia; Eduarda, Ramião; Mazer, Prune; Machado, Inês; Barbosa, FernandoThe current meta-analysis included 431 records (N= 123,414) to comprehensively explore the complex interaction between psychopathy, antisocial behavior, and empathy. First, empathy domains (cognitive and affective) were used to provide critical insights for distinguishing antisocial behavior from psychopathy. Cognitive empathy was more impaired in antisocial groups (gcognitive= -.40; gaffective= -.11), while high psychopathy samples displayed larger deficits in affective empathy (gaffective= -.44; gcognitive= -.23), although this dissociation was not clear in correlational analyses. Secondly, the specific associations between empathy domains and psychopathy dimensions were evaluated. Psychopathy traits closely related to antisocial behavior were mildly associated with both empathy domains (r= -.07 to -.14). Callous-affective traits were largely associated with affective empathy (r= -.32 to -.35) and moderately correlated to cognitive empathy (r= -.26). Diverging results were found for the interpersonal dimension, as boldness-adaptive manifestations were unrelated to cognitive empathy (r= .05), while non-adaptive interpersonal traits were negatively associated with both empathy domains (rcognitive= -.14; raffective= -.25). Overall, these findings suggest that: (1) psychopathy and antisocial behavior display distinct empathic profiles; (2) psychopathy dimensions are differentially associated with cognitive and affective empathy; (3) the interaction between interpersonal traits and empathic processes is different across the conceptual models of psychopathy.
- Untangling self-reported interoceptive attention and accuracy: Evidence from the european portuguese validation of the body perception questionnaire and the interoceptive accuracy scalePublication . Campos, Carlos; Rocha, Nuno; Barbosa, FernandoThis study included an online community-sample (n = 515) and aimed to: (1) explore the factor structure and psychometric properties of the European Portuguese versions of the Interoceptive Accuracy Scale (IAS) and the Body Perception Questionnaire (BPQ) - Body Awareness and Autonomic Reactivity scales; (2) examine the association between self-reported interoceptive attention and accuracy (indexed by the BPQ Body Awareness and IAS, respectively). Parallel-analysis indicated a one-factor solution for the BPQ Body Awareness. For the IAS and BPQ Autonomic Reactivity, bifactor ESEM models were retained. Ancillary measures revealed that both scales were mainly unidimensional and presented reliable total scores. All scales displayed excellent internal consistency, although test-rest reliability was modest. There was a quadratic U-shaped association between the IAS and BPQ Body Awareness. Alexithymia was negatively correlated with the IAS and unassociated with the BPQ Body Awareness. These findings suggest that interoceptive attention and accuracy may be dissociated using self-report questionnaires.