Abstract：
Investigating the cognitive control processes and error detection mechanisms involved in risk-taking behaviors is essential for understanding risk propensity. This study investigated the relationship between risk propensity and cognitive control processes using an event-related potentials (ERP) approach. The study employed a Cued Go/Nogo paradigm to elicit ERP components related to cognitive control processes, including contingent negative variation (CNV), P300, error-related negativity (ERN), and error positivity (Pe). Healthy participants were categorized into high-risk and low-risk groups based on their performance in the Balloon Analogue Risk Task (BART). The results revealed risk-taking behavior influenced CNV amplitudes, indicating heightened response preparation and inhibition for the high-risk group. In contrast, the P300 component showed no group differences but revealed enhanced amplitudes in Nogo trials, particularly in high-risk group. Furthermore, despite the lack of difference in the Pe component, the high-risk group exhibited smaller ERN amplitudes compared to the low-risk group, suggesting reduced sensitivity to error detection. These findings imply that risk-taking behaviors may be associated with a hypoactive avoidance system rather than impaired response inhibition. Understanding the neural mechanisms underlying risk propensity and cognitive control processes can contribute to the development of interventions aimed at reducing risky behaviors and promoting better decision-making.
摘要：
调查风险行为中涉及的认知控制过程和错误检测机制对于理解风险倾向至关重要。本研究使用事件相关电位（ERP）方法调查了风险倾向与认知控制过程之间的关系。该研究采用了CuedGo/Nogo范式来引出与认知控制过程相关的ERP组件，包括或有负变化(CNV)，P300，误差相关的负性(ERN)，和错误积极性（Pe）。健康参与者根据他们在气球模拟风险任务（BART）中的表现分为高风险和低风险组。结果表明，冒险行为影响CNV振幅，表明高风险组的反应准备和抑制作用增强。相比之下,在Nogo试验中，P300成分没有显示组差异，但显示出增强的振幅，尤其是高危人群。此外，尽管Pe成分缺乏差异，与低危组相比，高危组的ERN振幅较小，这表明对错误检测的敏感性降低。这些发现暗示，冒险行为可能与机能减退的回避系统有关，而不是与受损的反应抑制有关。了解潜在风险倾向和认知控制过程的神经机制可以有助于制定旨在减少风险行为和促进更好决策的干预措施。
