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Stop the impulse : uma tarefa stop signal emocional na população adulta portuguesa
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Introdução A supressão e o cancelamento de ações são componentes centrais do controlo inibitório (CI) humano. Para estudar a resposta inibitória na população saudável e clínica, foram utilizados vários paradigmas na literatura, incluindo a tarefa Stop Signal. Embora investigações anteriores tenham estudado esta função cognitiva, a sua relação com processos afetivos ainda não é clara. Metodologia O presente estudo procura colmatar esta lacuna através do desenvolvimento de um novo programa informático da tarefa Stop signal, especificamente concebido para estudar os défices de CI em indivíduos com Perturbação Obsessivo-Compulsiva (POC). A investigação preliminar decorreu em indivíduos saudáveis, assegurando a validação do programa, bem como a recolha de dados fundamentais sobre a impulsividade, emoção e CI da população não clínica. A tarefa Stop signal desenvolvida baseia-se na investigação original de Verbruggen, mas introduz adaptações e vantagens, que incluem a mudança de estímulos neutros por imagens IAPS emocionalmente evocativas e o quádruplo do número de ensaios, o que melhora significativamente a qualidade e a validade dos dados do programa. É medida a resposta eletrodérmica dos indivíduos (EDA) durante a realização da tarefa. Foram igualmente empregues questionários para avaliar ansiedade, sintomatologia obsessiva-compulsiva e impulsividade. Resultados e Conclusões Os resultados não indicam diferenças significativas na dificuldade de inibição de respostas em relação às diversas categorias emocionais das imagens apresentadas na amostra em estudo. No entanto, foi observada uma correlação entre as emoções e as dificuldades de inibição dos indivíduos. Este estudo visa identificar alguns padrões de interação entre processos emocionais e cognitivos, preparando assim o terreno para investigações futuras sobre os défices inibitórios relacionados a conteúdos obsessivos na POC.
Introduction Action suppression and cancelation are central components of human cognitive control. Inhibitory control (IC) is a cognitive function involving distinct brain networks. To study inhibitory response in certain populations, several paradigms have been employed in literature, including the Stop Signal Task. Although previous research has shed light on this particular executive function, its relationship with emotion still remains unclear. Method The present study endeavors to address this gap by developing and testing a novel Stop Signal computer program, specifically designed to study IC deficits in individuals with obsessive-compulsive disorder (OCD). Preliminary research was made on healthy individuals, ensuring the program's validation and calibration, as well as gathering fundamental data on the nonclinical population's impulsiveness, emotion, and IC. The stop signal task developed is based on Verbruggen's original research, but introduces adaptations and advantages, which include changing neutral stimuli for emotionally evocative IAPS images and quadrupling the number of trials, significantly improving the quality and validity of the program's data. The subjects' electrodermal response (EDA) is measured during the task. Questionnaires were also used to assess anxiety, obsessive compulsive symptoms, and impulsivity. Results and Conclusions The results do not suggest significant differences in the inhibition difficulty of responses in relation to the various emotional categories of the images presented in the sample under study. However, a correlation was observed between the emotions and the individuals' inhibition performance. This research provides clues on the intricate interplay between emotional and cognitive processes, which could have significant implications for potentially paving the way for future breakthroughs and insights into OCD.
Introduction Action suppression and cancelation are central components of human cognitive control. Inhibitory control (IC) is a cognitive function involving distinct brain networks. To study inhibitory response in certain populations, several paradigms have been employed in literature, including the Stop Signal Task. Although previous research has shed light on this particular executive function, its relationship with emotion still remains unclear. Method The present study endeavors to address this gap by developing and testing a novel Stop Signal computer program, specifically designed to study IC deficits in individuals with obsessive-compulsive disorder (OCD). Preliminary research was made on healthy individuals, ensuring the program's validation and calibration, as well as gathering fundamental data on the nonclinical population's impulsiveness, emotion, and IC. The stop signal task developed is based on Verbruggen's original research, but introduces adaptations and advantages, which include changing neutral stimuli for emotionally evocative IAPS images and quadrupling the number of trials, significantly improving the quality and validity of the program's data. The subjects' electrodermal response (EDA) is measured during the task. Questionnaires were also used to assess anxiety, obsessive compulsive symptoms, and impulsivity. Results and Conclusions The results do not suggest significant differences in the inhibition difficulty of responses in relation to the various emotional categories of the images presented in the sample under study. However, a correlation was observed between the emotions and the individuals' inhibition performance. This research provides clues on the intricate interplay between emotional and cognitive processes, which could have significant implications for potentially paving the way for future breakthroughs and insights into OCD.
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Keywords
Impulsividade Controlo inibitório Emoção SST Obsessões Impulsivity Inhibitory control Emotion Obsessions