Megías Alberto, Navas Juan Francisco, Petrova Dafina, Cándido Antonio, Maldonado Antonio, Garcia-Retamero Rocio, Catena Andrés
Department of Experimental Psychology, Learning, Emotion and Decision Group, Mind, Brain and Behavior Research Center, University of Granada, Granada, Spain.
Hum Brain Mapp. 2015 Aug;36(8):2853-64. doi: 10.1002/hbm.22812. Epub 2015 Apr 16.
Dual-process theories have dominated the study of risk perception and risk-taking over the last two decades. However, there is a lack of objective brain-level evidence supporting the two systems of processing in every-day risky behavior. To address this issue, we propose the dissociation between evaluative and urgent behaviors as evidence of dual processing in risky driving situations. Our findings show a dissociation of evaluative and urgent behavior both at the behavioral and neural level. fMRI data showed an increase of activation in areas implicated in motor programming, emotional processing, and visuomotor integration in urgent behavior compared to evaluative behavior. These results support a more automatic processing of risk in urgent tasks, relying mainly on heuristics and experiential appraisal. The urgent task, which is characterized by strong time pressure and the possibility for negative consequences among others factors, creates a suitable context for the experiential-affective system to guide the decision-making process. Moreover, we observed greater frontal activation in the urgent task, suggesting the participation of cognitive control in safe behaviors. The findings of this research are relevant for the study of the neural mechanisms underlying dual process models in risky perception and decision-making, especially because of their proximity to everyday activities.
在过去二十年里,双加工理论主导了风险感知和冒险行为的研究。然而,缺乏客观的大脑层面证据来支持日常危险行为中的两种加工系统。为解决这一问题,我们提出将评估行为与紧急行为分离,以此作为危险驾驶情境中双加工的证据。我们的研究结果显示,在行为和神经层面,评估行为与紧急行为均存在分离。功能磁共振成像(fMRI)数据表明,与评估行为相比,紧急行为中涉及运动编程、情绪加工和视觉运动整合的脑区激活增加。这些结果支持了在紧急任务中对风险进行更自动的加工,主要依赖启发式和经验性评估。紧急任务具有强烈的时间压力以及可能产生负面后果等特点,为经验 - 情感系统引导决策过程创造了合适的情境。此外,我们观察到紧急任务中额叶激活更强,这表明认知控制参与了安全行为。本研究结果对于风险感知和决策中双加工模型的神经机制研究具有重要意义,特别是因为它们与日常活动密切相关。