Correlatos neurais na tomada de decisão em situações de conflito positivo e negativo: potencial positivo tardio e associações com o bem-estar subjetivo

• Ano de defesa: 2019
• Autor(a) principal: Simurro, Paula De Souza Pinto Brandao [UNIFESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de São Paulo (UNIFESP)
• Palavras-chave em Português: Decision-Making; Event Related Potential (ERP); Late Positive Potential (LPP); Subjective well-being (SWB); Tomada De Decisão; Potencial Evocado Por Evento (ERP); Valência; Late positive potencial; Bem-estar subjetivo (BES)
• Link de acesso: https://sucupira.capes.gov.br/sucupira/public/consultas/coleta/trabalhoConclusao/viewTrabalhoConclusao.jsf?popup=true&id_trabalho=7782604; https://repositorio.unifesp.br/handle/11600/59576

The decision-making processes has become a topic of great importance for psychiatry, since a series of behaviors can be understood from the point of view of dysfunctional decision-making. In this scenario, deepening the theme supports the development of a common reference point, which can identify typical versus atypical response patterns in the brain. Decision-making is highly tied to emotional processes, which have measurable physiological patterns. Given the short duration of these processes, which occur in order of milliseconds, electroencephalogram measurements, such as Event Related Potential, have been widely used, as it allow monitoring of physiological responses, under high temporal resolution. In addition to the temporal issue, it should be noted, that the individual's sensitivity to emotional connotation stimuli (i.e. negative and positive) can influence or be influenced by subjective well-being. In this sense, the mapping of the neurophysiological correlates of emotional components, during the act of choice and in the light of the implications of subjective well-being is presented as the most relevant theme. Objectives: Analyze electrophysiological correlates of Event Related Potential in decision-making; compare neurophysiological differences in positive and negative decision-making; analyze the correlation between decisionmaking and subjective well-being. Methods: Twenty-one voluntaries (12 females), aged 20-35 years old (M=29.71, +-4.32), with no psychiatric or neurological history, were recruited and answered psychological questionnaires (i.e. Beck Depression Inventory II, World Health Organization 5-item Well-being Index, Life Satisfaction Scale and Subjective Happiness Scale) and performed electroencephalographic exams while two tasks: (A) observed images of positive and negative valence and gave notes thereof, and; (B) chose the image they most liked from peers (positive x positive and negative x negative). Results: There was significant difference in LPP amplitude between positive and negative decision-making, as well as in response times. Subjective well-being was correlated with subjective rating of positive pictures and response time. Conclusion: decision-making in positive conflict elicited higher LPP amplitude in CPz site. Individuals that have a more positive perception of stimuli xv have a fast time response in decisions and presented higher subjective well-being scores.